INTRODUCTION

Adhesive dentistry has seen significant advancements over the past decades. Initially, dental adhesives evolved from no-etch systems to etch-and-rinse systems, which consisted of multiple components. From then on, manufacturers shifted focus toward simplifying the procedure. Different generations of self-etch adhesives and, finally multi-mode or universal adhesives were the result. The latter category, introduced in the early 2010s, nowadays comprises numerous products offered by many different manufacturers.

In general, universal adhesives offer more procedural freedom and simplicity than multi-step, multi-bottle systems as well as good adhesion. According to a recent review¹, adhesive properties have improved and manufacturers have also succeeded in reducing the technique sensitivity of the adhesive systems. However, hybrid layer degradation still seems to be a relevant issue for many modern products available on the market. Moreover, feedback from clinicians reveals that there are several areas of concern where bonding systems in general can be improved. These include the risk of contamination due to a lengthy procedure or the need for rubbing, pooling of the adhesive in corners and accumulation along margins. Moreover, some adhesives are challenging to introduce into narrow cavities, while their curability may be limited.

That is why Kuraray Noritake Dental Inc. decided to develop a new-generation universal adhesive that addresses these areas of concern: CLEARFIL™ Universal Bond Quick 2. This latest evolution in dental bonding technology is based on decades of knowledge in the development of clinically successful dental adhesives at Kuraray Noritake Dental Inc. It retains all the benefits of its predecessor – the current extensively tested and clinically proven CLEARFIL™ Universal Bond Quick – adding higher strength and improved handling.^2-5

THE ESSENTIAL BENEFITS OF CLEARFIL Universal Bond Quick 2

CLEARFIL Universal Bond Quick 2 offers the following essential benefits:

• Quick and straightforward application procedure
• High-strength bonding layer
• Consistently durable bond
• Ease of application
• Minimised risk of pooling
• Procedural freedom
• Immediate availability for clinical use

For all those who wonder how the improvements were implemented, which technologies are responsible for them and whether there is scientific proof, the following paragraphs are worth reading. They summarize essential general knowledge about adhesive formulations, explain potential issues and their causes, and address every benefit featured by CLEARFIL Universal Bond Quick 2, explaining all the important details around it.

KEY COMPONENTS OF UNIVERSAL ADHESIVES

Universal adhesives are based on highly complex formulations with many different constituents and technologies combined in a single bottle. The most essential parts found in virtually every universal adhesive are:

RESIN COMPONENTS

Just like composite restorative materials, dental adhesives are resin-based materials. This means that different kinds of cross-linking and functional monomers are the beating heart of the formulation. Functional monomers are initially hydrophilic and form linear polymers upon curing, while cross linking polymers are hydrophobic and form stronger, highly cross-linked polymer networks.⁶ They are added to adhesive formulations to fulfil different tasks: some monomers are used to promote adhesion to tooth structure or composite resin, while others are used as etching or demineralizing agents, wetting enablers, and agents promoting penetration into the tooth structure. Hence, they have an impact on application properties, bond strength to various substrates including enamel and dentin, strength, hydrolytic stability and overall durability of the bonding layer, and more.

INITIATORS

To provide for a high strength of the adhesive layer and a favourable degree of conversion, dental adhesives are typically cured before the composite is applied. Universal adhesives contain a photo initiator that sets off the radical polymerisation reaction when light of a specific wavelength is absorbed. Chemical initiators are found in self- or dual-cure resin cements, but not in single-bottle adhesives. Studies have revealed that the initiator concentration has an impact on the mechanical properties of the materials they are part of ^6,7.

FILLERS

Unlike composite restorative materials, which are always filled, dental adhesives may or may not contain fillers. Fillers are usually added for two main reasons: to increase the viscosity of the adhesive and to strengthen the adhesive layer. The viscosity has a direct impact on the thickness and quality of the adhesive layer. If the viscosity is too low, the risk increased of some areas of the tooth structure remaining uncovered resulting in an incomplete adhesive layer. In addition, an overly thin adhesive layer may be weak due to the inhibition of oxygen, which prevents proper curing of the contained resin⁶. If the viscosity is too high, however, application into the root canal and deep Class II cavities is often difficult thus increasing the risk of pooling or adhesive accumulation along margins. Moreover, air-blowing and complete solvent evaporation may also prove challenging.

SILANE COUPLING AGENT

A silane coupling agent is usually part of the formulation as well. They are the link between the resin matrix and the filler particles in the formulation and offer protection against degradation.

SOLVENTS

Solvents – typically water and ethanol or acetone – are essential parts of adhesive formulations. This is because dentin only bonds well to hydrophilic materials. Together with the hydrophilic monomers found in the formulation, the solvents provide for an environment favourable for dentin bonding⁶. Moreover, their task is to re-expand the collapsed collagen fibrils on the demineralized dentin surface. Most modern dental adhesives contain water and ethanol as solvents. However, ethanol cannot be used in combination with certain types of monomers.

CHEMISTRY IMPROVEMENTS ENABLING THE ESSENTIAL BENEFITS

There are certain components and technologies, like monomers and monomer combinations, which are used by various dental industry manufacturers in their universal adhesives. While some certainly offer advantages, potential drawbacks lie in their toxicity in the uncured state, possible unwanted interactions with other components and the like.

Many of the essential benefits of CLEARFIL Universal Bond Quick 2 are due to improvements or changes in those key components. Specifically, the resin formulation and the filler technology have been altered to provide for higher strength and an improved handling. The following paragraphs will describe the changes, the key components used and the benefits arising from them.

1. RESIN TECHNOLOGY: QUICK AND STRAIGHTFORWARD APPLICATION PROCEDURE

Adhesive penetration into the tooth structure is strongly influenced by monomers contained in the formulation. A monomer commonly used for this purpose is the highly hydrophilic hydroxyethylmethacrylate (HEMA)⁶. Although HEMA provides important benefits such as supporting homogeneous integration of components within the adhesive, its hydrophilic character – even after polymerization – may lead to water sorption, which can negatively influence the long-term mechanical properties of adhesive systems⁸. According to the results of an in-vitro study, high concentrations of HEMA in adhesive formulations may not only lead to poor mechanical properties (including bond strength), but also to a higher risk of bond degradation⁹. For these reasons, reducing the dependency on high levels of HEMA in universal adhesives and complementing it with alternative monomers is considered advantageous. However, this measure requires careful selection of the alternative monomer and precise alignment with the existing ingredients to prevent negative effects. In some cases, manufacturers have selected alternative monomers that lead to a lower bond strength or (unlike HEMA) lead to cytotoxic effects even after polymerisation¹⁰.

In CLEARFIL Universal Bond Quick and the brand-new universal adhesive CLEARFIL Universal Bond Quick 2, Kuraray Noritake Dental Inc. have incorporated an amide monomer that significantly decreases the need for HEMA. In in-vitro tests, this monomer did not show any cytotoxic effects¹⁰, while it is responsible for one of the essential benefits – the extremely quick and straightforward application procedure. It gives the adhesive its hydrophilicity in the initial, uncured state. During polymerisation, a stable, hydrophobic cross-linked network is formed. The network contributes to the durability of the bond, also thanks to its water-resistant property.

CLEARFIL Universal Bond Quick 2 takes just seconds to apply as there is no need to wait for the adhesive to penetrate the tooth structure. This feature was originally developed for its predecessor CLEARFIL Universal Bond Quick and was carried over as it turned out to work well¹¹ and has been very well received by clinicians from all over the world. Eliminating the need to wait after application speeds up the procedure, saves time and minimises the risk of contamination. This is particularly useful in situations where moisture control is a challenge or where a patient is impatient – e.g. in paediatric dentistry.

2. RESIN TECHNOLOGY: HIGH-STRENGTH BONDING LAYER

The stronger the bonding layer, the higher its resistance to shrinkage forces. Hence, it seems worth striving for a strong bonding layer to enhance the longevity of both bond and restoration. A popular strategy is the adding of cross-linking bi-or multi-functional monomers to the formulation^6,12. While the most frequently used monomers added for this purpose are UDMA, Bis-GMA and TEGDMA, Kuraray Noritake Dental Inc. added the Urethane Tetra Methacrylate Monomer (UTMA) to add mechanical strength to the adhesive system.

UTMA is a functional monomer that, due to its multiple curable sites, provides for an increased strength of the bonding layer. Both nano-hardness and ultimate tensile strength are extraordinarily high. Consequently, the adhesive offers the desired increased resistance to shrinkage forces. Moreover, it forms a highly curable, thin bonding layer.

3. RESIN TECHNOLOGY: CONSISTENTLY DURABLE BOND

The third monomer forming the advanced rapid layer technology found in CLEARFIL Universal Bond Quick 2 is the proven functional acidic monomer invented by Kuraray Noritake Dental Inc.: the Original MDP Monomer. MDP is not only well-known for its high affinity to hydroxyapatite, but also several other materials, including metals and zirconium oxide. In various studies, it has been proven to deliver an outstanding bonding performance over time^13,14.

This applies specifically to the original MDP monomer produced by Kuraray Noritake Dental Inc. In a study, it was shown that the quality and performance of the functional monomer may be different depending on how it is produced: MDP from other manufacturers contained impurities and dimer, which had a negative effect on the bonding performance of the respective adhesives¹⁵. Only the original MDP monomer exhibited a high purity and contained no dimer, with better bonding outcomes.

WATCH THE VIDEO ABOUT ADVANCED RAPID BOND TECHNOLOGY

4. FILLER TECHNOLOGY: EASE OF APPLICATION

The flow properties of an adhesive are a critical factor: as mentioned earlier, achieving an optimally formed and uniformly distributed adhesive film is essential for reliable clinical performance. Moreover, the right flow properties improve the application procedure. To realize improved flow properties without altering the filler content (which might negatively influence the mechanical strength), Kuraray Noritake Dental Inc. has redesigned the filler dispersion method originally employed by the company. The new way of adding fillers and different monomers to the formulation leads to low filler agglomeration.

Consequently, CLEARFIL Universal Bond Quick 2 is very easy to apply. Its low viscosity allows the adhesive to flow effortlessly even into narrow or hard-to-reach areas, supporting precise placement and uniform coverage.

Finally, air-blowing is easier to perform on a thin layer than when the layer is highly viscous and thick: The adhesive is evenly distributed and thinned out with a gentle stream of air. If performed correctly, this measure has a positive impact on bond stability and longevity according to scientific studies^8,16. Despite an increased flowability, the filler content in CLEARFIL Universal Bond Quick 2 is similar to that of its predecessor CLEARFIL Universal Bond Quick in supporting the formation of a strong bond.

The low viscosity of CLEARFIL Universal Bond Quick 2 allows the adhesive to flow effortlessly even into narrow or hard-to-reach areas, supporting precise placement and uniform coverage.

5. FILLER TECHNOLOGY: MINIMISED RISK OF POOLING

The new filler dispersion method also enables the formation of a thin, uniform layer independent of the cavity shape. The formation of an undesirably thick bonding layer along the margins and adhesive pooling at the bottom of the cavity are clearly a thing of the past. This is particularly advantageous in the context of creating restorations in the aesthetic zone or cementation procedures employing Immediate Dentine Sealing (IDS).

6. PROCEDURAL FREEDOM

CLEARFIL Universal Bond Quick 2 is universally applicable: It can be used in self-etch, selective etch and total-etch techniques and is thus suitable for many clinical situations and for all types of users independent of their personal preferences.

Moreover, it is approved for an extremely wide range of indications. Procedures are simplified as fewer bottles and fewer steps are required: The need for etching is eliminated, as is the need for a separate dual-cure activator when the product is used with other manufacturers’ self-adhesive cements.

CLEARFIL Universal Bond Quick 2 forms the connection between several universal resin-based products of Kuraray Noritake Dental Inc.’s portfolio:

• CLEARFIL MAJESTY™ ES-2 Universal
• CLEARFIL MAJESTY™ ES Flow Universal
• PANAVIA™ SA Cement Universal

7. IMMEDIATE AVAILABILITY FOR CLINICAL USE

Due to the carefully selected components and their precise alignment, the chemistry found in CLEARFIL Universal Bond Quick 2 is highly stable. Filler particles are extremely unlikely to agglomerate, and the novel formulation allows for storage at room temperature. This is a big advantage, as it provides for the fact that the product is always ready for use and readily available. The formulation of CLEARFIL Universal Bond Quick 2 is optimised so that it may be stored at temperatures between 2 and 25° C (36-77°F).

CLINICAL WORKFLOWS

Explore the clinical videos demonstrating how CLEARFIL Universal Bond Quick 2 can be seamlessly integrated into different workflows.

DIRECT RESTORATION WORKFLOW

CLEARFIL Universal Bond Quick 2 + CLEARFIL MAJESTY™ ES-2 Universal

DIRECT RESTORATION WORKFLOW

CLEARFIL Universal Bond Quick 2 + CLEARFIL MAJESTY™ ES Flow Universal (Super Low)

DIRECT RESTORATION WORKFLOW

CLEARFIL Universal Bond Quick 2 + CLEARFIL MAJESTY™ ES Flow Universal (Low)

POST CEMENTATION & CORE BUILD-UP WORKFLOW

CLEARFIL Universal Bond Quick 2 + CLEARFIL™ DC CORE PLUS

HOW TO CEMENT INDIRECT RESTORATIONS

CLEARFIL Universal Bond Quick 2 + PANAVIA™ SA Cement Universal

HOW TO SEAL A PREPARED ABUTMENT TOOTH

CLEARFIL Universal Bond Quick 2

CONCLUSION

Kuraray Noritake Dental Inc. is committed to continuous improvement in dentistry. With the ultimate goal of making dental professionals’ lives easier and patients happier, the company combines research, development and innovation with Japanese perfection to introduce products that make all the difference.

Decades of experience and access to highly developed adhesive technologies enable the team of researchers to develop new adhesive formulations with well-balanced properties like CLEARFIL Universal Bond Quick 2. The product handles well, is based on proven components and adds decisive innovative technologies to provide for an even better bonding performance and straightforward application.

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References

1. Breschi L, Maravic T, Mazzitelli C, Josic U, Mancuso E, Cadenaro M, Pfeifer CS, Mazzoni A. The evolution of adhesive dentistry: From etch-and-rinse to universal bonding systems. Dent Mater. 2025 Feb;41(2):141-158.
2. Jaggi M, Karlin S, Zitzmann NU, Rohr N. Shear bond strength of universal adhesives to human enamel and dentin. J Esthet Restor Dent. 2024 May;36(5):804-812.
3. Peumans M, Vandormael S, De Coster I, De Munck J, Van Meerbeek B. Three-year Clinical Performance of a Universal Adhesive in Non Carious Cervical Lesions. J Adhes Dent. 2023 Jun 8;25(1):133-146. doi: 10.3290/j.jad.b4186751. PMID: 37387551.
4. de Almeida RAM, Lima SNL, Nassif MV, Mattos NHR, de Matos TP, de Jesus Tavarez RR, Cardenas AFM, Bandeca MC, Loguercio AD. Eighteen-month clinical evaluation of a new universal adhesive applied in the “no-waiting” technique: a randomized clinical trial. Clin Oral Investig. 2023 Jan;27(1):151-163. doi: 10.1007/s00784-022-04703-7. Epub 2022 Sep 6. PMID: 36068369; PMCID: PMC9447982.
5. De Almeida R, Siqueira F, Verde T, Naupari-Villasante R, Reis A, Loguercio AD, Cardenas A. Prolonged application time effects on universal adhesives in non-carious cervical lesions: An 18-month split mouth randomized clinical trial. J Dent. 2024 Jan;140:104800. doi: 10.1016/j.jdent.2023.104800. Epub 2023 Dec 4. PMID: 38056759.
6. Van Landuyt KL, Snauwaert J, De Munck J, Peumans M, Yoshida Y, Poitevin A, Coutinho E, Suzuki K, Lambrechts P, Van Meerbeek B. Systematic review of the chemical composition of contemporary dental adhesives. Biomaterials 2007; 28(26):3757-85.
7. Kalliyana Krishnan V, Yamuna V. Effect of initiator concentration, exposure time and particle size of the filler upon the mechanical properties of a light-curing radiopaque dental composite. J Oral Rehabil. 1998 Oct;25(10):747-51.
8. Hosaka K, Nakajima M, Takahashi M, Itoh S, Ikeda M, Tagami J, Pashley DH. Relationship between mechanical properties of one-step self etch adhesives and water sorption. Dent Mater. 2010 Apr;26(4):360-7.
9. Collares FM, Ogliari FA, Zanchi CH, Petzhold CL, Piva E, Samuel SM. Influence of 2-hydroxyethyl methacrylate concentration on polymer network of adhesive resin. J Adhes Dent. 2011 Apr;13(2):125-9. doi: 10.3290/j.jad.a18781. PMID: 21594225.
10. Wawrzynkiewicz A, Rozpedek-Kaminska W, Galita G, Lukomska-Szymanska M, Lapinska B, Sokolowski J, Majsterek I. The Toxicity of Universal Dental Adhesives: An In Vitro Study. Polymers (Basel). 2021 Aug 10;13(16):2653.
11. Ahmed MH, Yoshihara K, Mercelis B, Van Landuyt K, Peumans M, Van Meerbeek B. Quick bonding using a universal adhesive. Clin Oral Investig. 2020 Aug;24(8):2837-2851.
12. Sofan E, Sofan A, Palaia G, Tenore G, Romeo U, Migliau G. Classification review of dental adhesive systems: from the IV generation to the universal type. Ann Stomatol (Roma). 2017 Jul 3;8(1):1-17.
13. Fehrenbach J, Isolan CP, Munchow EA. Is the presence of 10-MDP associated to higher bonding performance for self-etching adhesive systems? A meta-analysis of in vitro studies. Dent Mater. 2021 Oct;37(10):1463-1485.
14. Carrilho E, Cardoso M, Marques Ferreira M, Marto CM, Paula A, Coelho AS. 10-MDP Based Dental Adhesives: Adhesive Interface Characterization and Adhesive Stability-A Systematic Review. Materials (Basel). 2019 Mar 7;12(5):790.
15. Yoshihara K, Nagaoka N, Okihara T, Kuroboshi M, Hayakawa S, Maruo Y, Nishigawa G, De Munck J, Yoshida Y, Van Meerbeek B. Functional monomer impurity affects adhesive performance. Dent Mater. 2015 Dec;31(12):1493-501.
16. Abu-Nawareg MM, Nassar HM, Sonbul HM. Enhancing bond stability: impact of adhesive thinning on resin-dentin bonded interfaces. Eur Rev Med Pharmacol Sci. 2023 Oct;27(20):9628-9638.

Outstanding  adhesion, long-lasting aesthetics, and stress-free, predictable handling are essential requirements for modern veneer cementation. With PANAVIA^™ Veneer LC, Kuraray Noritake Dental Inc. offers a light-curing resin cement designed to meet the highest aesthetic and functional demands in veneer procedures.

PANAVIA Veneer LC is a specialized veneer cement formulated to provide exceptional bond strength to a wide range of substrates. To facilitate stress-free, high-precision veneer positioning, it is light-cured and equipped with a long working time.

Key benefits of PANAVIA Veneer LC include:
•    Strong and durable adhesion to multiple restorative substrates
•    Excellent wear resistance and gloss retention
•    Smooth handling with controlled flow and minimal film thickness
•    Excellent shade match between try-in pastes and resin cement
•    A complete three-component, easy-to-use cementation system

DENTAL ADVISOR RESEARCH AWARD:

Laboratory testing confirms adhesion, gloss retention, and wear resistance

The performance of PANAVIA Veneer LC was evaluated in vitro at the Dental Advisor Biomaterials Research Center. Tests focused on determining the bond strength and long-term surface stability under simulated clinical conditions. Bond strength to enamel, dentin, lithium disilicate, and zirconia was assessed after six months of artificial aging. In addition, wear resistance was evaluated using a toothbrush abrasion protocol, and by measuring depth of wear, surface roughness, and changes in gloss.

Investigators reported that PANAVIA Veneer LC demonstrated excellent adhesion properties, along with high gloss retention and a very even wear pattern. Limited surface roughness after abrasion was highlighted as a factor that may help reduce staining and bacterial adhesion over time. Based on these results, PANAVIA Veneer LC was awarded the Dental Advisor Research Award, recognizing its strong performance in the aesthetic veneer cement category.

DENTAL ADVISOR PREFERRED PRODUCT AWARD:

Clinicians praise handling, shade reliability, and aesthetic results

PANAVIA Veneer LC also earned a Dental Advisor Preferred Product Award in the category Indirect Restoratives – Cement: Esthetic Resin, the preferred feature being its excellent handling. The dental practitioners who tested the product in their own practices for clinical evaluation judged that application and manipulation were easy, as the cement offered the desired combination of flowability, stability, and non-stickiness.

Try-in paste and final cement paste shades were found to match perfectly and an evaluator summed up: "Great esthetics, very easy to use, complete system."

While matching try-in pastes were well-received, one evaluator particularly highlighted the opacity of the white shade: "The white shade of the cement was opaque enough for efficient masking of discolored tooth structure."

COMPELLING COMBINATION OF CLINICALLY RELEVANT FEATURES

By earning both the Dental Advisor Research Award and the Preferred Product Award, PANAVIA Veneer LC demonstrates a compelling combination of scientifically proven performance and clinical reliability. Its durable adhesion, excellent wear resistance, and predictable aesthetic outcomes make it a trusted choice for veneer cementation in demanding clinical situations.

For more information, visit Dental Advisor.

Dr Onur Alp Yünüki kliiniline juhtum

KOMBINEERIDES KAASAEGSEID TÖÖVAHENDEID JA MATERJALE OOTUSPÄRASE TULEMUSE SAAMISEKS

Direktsed komposiitrestauratsioonid on täna kvaliteetseks ravimeetodiks, isegi kui on vaja asendada palju hambastruktuuri. Seda eelkõige vaikkomposiitmaterjalide ja adhesiivtehnoloogia uusimate arengute tõttu. Valides sobivad materjalid ja kihistamistehnikad ning kaasaegsed digitaalsed töövahendid värvierinevuste hindamiseks, saab luua ootuspäraseid ja väga  esteetilisi tulemusi, nagu on näidatud järgnevas kliinilises näites.

Väljakutse

Meie kliinikusse tuli noor meespatsient, kes soovis asendada olemasolevad komposiitrestauratsioonid ülalõua intsisiividel  (FDI tähistuse kohaselt hambad nr 12 ja 11). Kliinilise läbivaatuse käigus ilmnes ulatuslik restauratsiooni kadu lateraalsel intsisiivil. Lisaks täheldati hambal nr 11 anatoomilisi ebakorrapärasusi, värvusemuutusi ja pinna tuhmumist. Naaberhambal, tsentraalsel intsisiivil, täheldati sarnast värvuse ja pinnaläike muutust.

Patsiendiga konsulteerides otsustati asendada olemasolevad restauratsioonid, kasutades spetsiaalselt kahetooniliseks kihistamiseks välja töötatud komposiitmaterjali – CLEARFIL MAJESTY™ ES-2 Premium (Kuraray Noritake Dental Inc.). Tooni täpseks analüüsiks tehti fotod nii ristpolariseeriva filtriga kui ka ilma selleta (joonised 1 kuni 4).

Joonis 1. Hammaste frontaalvaade: ulatuslik restauratsioon on kadunud ülalõua paremal lateraalsel intsisiivil.

Joonis 2. Rispolariseeritud filtriga tehtud foto hammastest, mis võimaldab värvierinevuste detailset analüüsi.

Joonis 3. Hammaste lateraalne vaade.

Joonis 4. Lateraalne vaade – ristpolariseeritud foto.

Lahendus

Pärast olemasolevate restauratsioonide eemaldamist paigaldati töövälja isoleerimiseks kofferdam. Teostati emaili selektiivne söövitamine, seejärel kanti hammastele isesöövitavat adhesiivi (CLEARFIL™ SE Bond 2, Kuraray Noritake Dental Inc.), pärast mida loodi palataalkest CLEARFIL MAJESTY™ ES-2 Premium tooniga A1E (joonised 5 ja 6). Mamelonide struktuur rekonstrueeriti CLEARFIL MAJESTY™ ES-2 Premiumi tooniga A1D, samas kui opalestsentses osas kasutati läbipaistvat tooni Blue. Seejärel kasutati isikupärastamiseks kollaseid ja valgeid toone. Joonisel 7 on näha olukord enne, joonisel 8 pärast viimistlemist ja poleerimist.

Joonis 5. Palataalkest loodi valitud komposiidi emaili tooniga A1E.

Joonis 6. Hammaste lateraalne vaade protseduuri ajal.

Joonis 7. Restauratsioon enne viimistlemist ja poleerimist.

Joonis 8. Restauratsioonide väljanägemine pärast viimistlemist ja poleerimist.

Tulemus

Lõpliku toonisobivuse hindamiseks tehti uus foto ristpolariseeriva filtriga, hoides kalibreerimiseks kaadris halli võrdluskaarti (joonised 9 ja 10). Restaureeritud hammaste lateraalne vaade (joonis 11) näitab, et esteetilise tulemuse saamiseks on lisaks õigele värvikombinatsioonile vajalik ka loomulik pinnatekstuur.

Joonis 9. Taastatud hammaste eestvaade ristpolariseeritud filtriga.

Joonis 10. Kalibreerimine halli võrdluskaardiga ja restauratsioonil saadud L*a*b* koordinaadid.

Joonis 11. Taastatud hammaste lateraalne vaade, tuues esile pinnatekstuuri olulisuse.

ARUTELU JA JÄRELDUS

Direktsete komposiitmaterjalidega hammaste taastamisel on elutruu tulemuse saavutamiseks oluline kasutada kaasaegseid  fotograafia ja pildianalüüsi meetodeid (nagu polariseeritud filtrid ja L*a*b koordinaadid). Nende meetodite kombineerimisel kvaliteetse komposiitsüsteemiga, mis võimaldab fikseeritud toonikombinatsioonide ja uuenduslikku valgusdifusiooni tehnoloogia kaudu head sissesulandumist ümbritseva hambastruktuuriga, saab ilusate restauratsioonide loomisest hästi prognoositav protsess.

Esitatud juhul oli patsient tulemusega väga rahul nii esteetika kui ka funktsiooni osas. Restauratsioone on kontrollitud regulaarsete kontrollvisiitide käigus ning nende esteetiline ja funktsionaalne seisukord püsib endine.

Dentist:

Autorist

Dr Onur Alp Yünük lõpetas oma magistri- ja doktoriõppe Istanbuli Ülikoolis. Praegu töötab ta abiprofessorina Istinye Ülikooli hambaraviinstituudi restauratiivse hambaravi osakonnas. Oma töös keskendub ta peamiselt esihammaste direktsetele komposiitrestauratsioonidele ja polükromaatilistele kihistamissüsteemidele.

By Dr Wiktor Pietraszewski BSC(HONS) DMD

INTRODUCTION

According to personal experience, the cementation of glass ceramic veneers is one of the most stressful and technique-sensitive procedures in restorative dentistry. This is not only due to the minimal margin for error, but also the high aesthetic standards that must be met to deliver a result satisfying both clinician and patient. Modern protocols emphasize conservative preparation, ideally remaining entirely within enamel, or at the very least, minimising extension into dentin. It is essential to understand that both preparation design and extent should not be planned in isolation. Instead, they must be carefully co-planned through thorough communication and collaboration between clinician and technician, ensuring the final result is both biologically respectful and aesthetically predictable.

THE CASE

The case to be discussed today is rather unique in that it arose unexpectedly, without the luxury of typical pretreatment planning steps such as a diagnostic wax-up or mock-up. These were omitted due to time and budget constraints on the patient’s part — a reality many clinicians can relate to. The rationale behind this approach will become clearer as we progress through the case. The patient is a 70-year-old retiree, whom I have been managing for several years. Treatment thus far has focused on stabilising and gradually improving her posterior restorations, with the longer-term aim of addressing the anterior dentition to enhance both function and aesthetics.

Nowadays, financial considerations often pose a significant barrier to patients accepting comprehensive treatment plans from the outset. As such, effective communication and phased treatment planning become essential tools in fostering patient trust and long-term commitment. This particular visit was an emergency appointment, with the patient presenting with a fractured porcelain veneer on her maxillary left central incisor — tooth 21 according to the FDI notation (Fig. 1). Fortunately, because of the existing phased approach to her care, we were well-positioned to transition into an aesthetic restorative phase with minimal resistance or hesitation from the patient.

Fig. 1. Pre-operative view - emergency: Chipped existing ceramic veneer.

Fig. 2. The plan - Digital Smile Design - 4 x porcelain veneers - 4 x direct composite restorations.

THE PLAN

After careful discussion, it was decided to remove and replace the four existing porcelain veneers and to replace four existing Class V stained composite restorations with fresh new direct composite (Fig. 2). Everyone involved was happy with the plan, sure it would adequately fulfil the patient’s aesthetic expectations and even surpass them. At the emergency appointment, time was so limited that only the temporary restoration of the chip with direct composite was feasible. Time was an important factor going forward: the patient wanted to proceed and have the case completed as soon as possible.

Main features of the Digital Smile Design (DSD) plan

1. Lengthening - central incisors – incisal edges to reflect the length of the canine tips
2. Equal gingival zeniths
3. Masking of the cervical defects

PREPARATION, SCAN & TEMPORISATION

The first step involved building up the teeth using a flowable composite to create a rough direct mock-up (Fig. 3), guided by the DSD plan (Fig. 2). This mock-up provided a visual and functional prototype, of which an impression was taken to aid in the fabrication of interim temporary restorations for the provisional phase of treatment.

Preparations were carried out using OptraGate isolation. The existing veneers were first removed using high-grit diamond burs at high speed. Once the bulk of the old material was cleared, gingival retraction was achieved using retraction cord, allowing for improved visibility and access. The preparations were then refined with lower-grit diamond burs at a reduced speed to ensure precision and tissue safety. The primary objectives of the preparation phase were to establish harmonious gingival zeniths and to adequately cover the cervical defects that were evident in the previous restorations (Figs. 4 and 5).

Fig. 3. Mock-up made of flowable composite.

Fig. 4. Class V composite restorations replaced on teeth 13, 23, 24 and 25.

Fig. 5. Situation after preparation of the maxillary incisors.

CEMENTS

Traditionally, glass ceramic veneers have been cemented successfully using a vast array of different luting resins available on the market.

Recently, a trend towards the use of flowable resin or heated composite to cement glass ceramic restorations has emerged. Like the abovementioned approach, this option is viable and literature-supported. The benefits of using flowable resin or a heated paste-type composite resin have been widely documented. The probably biggest advantage of this approach arises from the fact that the user is already familiar with the shades of the material used for cementation. Composite shades are often specified using the VITA classical A1 - D4 system, which dental professionals tend to be more accustomed to than to shade descriptions used for resin cements, like Warm, Light, Neutral and the like.

Some resin cement systems offer try-in pastes corresponding to the shades of the cement to overcome this obstacle and allow for precise shade evaluation at try-in to accurately aid in selecting the best cement shade available. PANAVIA™ Veneer LC is a popular example, as it matches the shades of PANAVIA™ V5 Try-In Pastes (Fig. 6).

Fig. 6. PANAVIA ™ V5 Try-in Paste Universal (A2).

Using a cement shade that matches the intended final appearance is crucial when bonding glass-ceramic veneers, as it decisively affects both immediate and longterm aesthetics. This is especially important due to the light-diffusion properties of glass-ceramic materials such as IPS e.max CAD or IPS e.max Press (Ivoclar Vivadent). Restorations can be as thin as 0.3 mm in minimally invasive cases. The thinner the restoration, the more translucent the material, and the greater the cement’s appearance will influence the final outcome.

Of course, the shade of the prepared tooth substantially influences cement shade selection, as well as decisions about the final restoration thickness (and thus preparation depth) and the ceramic translucency selected (IPS e.max, for example, is available in three translucency levels – LT [Light], MT [Medium], and HT [High]; Fig. 7). When the abutments are dark and a bright, white appearance is desired for the final restorations, it is wise to use a ceramic block with lower translucency. This is why taking a photograph of the prepared teeth and sending it to the ceramist is so important. In the present case, the pepared tooth structure appeared quite dark in the incisial third, so that the medium translucency variant of IPS e.max CAD in the determined shade A1 was selected, which would allow for a minimal thickness and a natural outcome.

Fig. 7. Whitewash photograph used to demonstrate the translucent properties of glass ceramic veneers.

PANAVIA™ VENEER LC

PANAVIA™ Veneer LC is a light curing resin cement. Therefore, it is indicated for ceramic and composite restorations with less than 2mm thickness. It comes in four shades – Clear, White, Universal (A2) and Brown (Fig. 8) – with matching PANAVIA™ V5 Try-In Pastes. These pastes facilitate the simulation of the restorations’ final appearance (Fig. 9). The cement system consists of four components (Fig. 10).

Fig. 8. PANAVIA™ Veneer LC Paste shades.

Fig. 9. Matching PANAVIA™ V5 Try-In Paste shades.

Fig. 10. The kit consists of phosphoric acid etchant, resin cement paste, universal ceramic primer and tooth primer.

TRY-IN

Upon delivery of the four lithium disilicate veneers in the selected translucency and shade (MT A1; Fig. 11), it was time to select the resin cement shade for try-in. As a bright result that would still match the colour of the adjacent teeth was desired, the shade of choice was Universal (A2). Patient and practice team were happy with the simulated treatment outcome (Fig. 12), so that the veneers were cleaned and pre-treated for definitive placement.

Fig. 11. Lab work delivered: Lithium disilicate porcelain veneers - medium translucency, shade A1.

Fig. 12. Try-in with PANAVIA™ V5 Try-In Paste Universal (A2).

CEMENTATION STEPS

For adhesive cementation of the veneers, the teeth were isolated with latex-free rubber dam (Isodam HD in thickness Heavy Gauge; Fig. 13a). Clamps were placed and the veneers tried in to check the fit once more (Figs. 13b and c).

Subsequently, the tooth surfaces were pretreated, starting with the central incisors: Protecting the adjacent teeth with a metal strip, the surfaces were first treated using air abrasion with 35-micron aluminium oxide powder (Fig. 14a). Once the surface was rough (Fig. 14b), phosphoric acid etching gel was applied to the sandblasted surface for 15-30 seconds (Fig. 14c). After thorough rinsing and drying of the etched surfaces, the adjacent lateral incisors were isolated with PTFE tape to facilitate excess cement clean-up during the adhesive luting procedure (Fig. 14d).

Fig. 13a. Isolation with latex-free rubber dam.

Fig. 13b. Further retraction with B4 clamps for dry try-in.

Fig. 13c. Fit check with clamps in place to ensure full seating of the veneers.

Fig. 14a. Air-abrasion with 35-micron aluminium oxide powder.

Fig. 14b. Result of the air abrasion procedure.

Fig. 14c. Total etching with 37% phosphoric acid.

Fig. 14d. PTFE tape placement on lateral incisors to simplify clean-up.

The actual cementation steps included priming of the tooth structure with PANAVIA™ V5 Tooth Primer, which is strong on enamel and dentin (Fig. 15a), leaving it for 20 seconds and then drying with mild air. The veneers’ intaglio surfaces were treated with hydrofluoric acid for 20 seconds and - after complete removal of the etchant - primed with CLEARFIL™ CERAMIC PRIMER PLUS (Fig. 15b) and dried. Now, it was time to apply the cement paste (PANAVIA™ Veneer LC) onto the pre-treated ceramic surfaces and seat the veneers carefully (Figs. 15c and d). During placement, gentle but firm pressure is ideally applied using a soft, padded instrument to ensure accurate seating. When using light-cure (LC) resin cements, tack-curing can often be avoided: Excess cement can be carefully brushed away prior to curing, avoiding flash and reducing clean-up. The resin promotes an excellent marginal blend between tooth and restoration, enhancing both the aesthetic and functional integration of the veneers. For light-curing, the restoration margins were covered with glycerine gel to prevent formation of an oxygen inhibition layer (Fig. 15e).

Fig. 15a. Priming of the tooth structure.

Fig. 15b. Etching and priming of the intaglio surfaces of the veneers.

Fig. 15c. Seating of a veneer with a cushioned instrument.

Fig. 15d. Two veneers simultaneously placed on the central incisors.

Fig. 15e. Restoration margins covered with glycerin gel for thorough light-curing from all sides.

The veneers for the lateral incisors were cemented likewise; however, floss was used instead of clamps for gingival retraction (Figs. 16a and b).

Fig. 16a. Gingival retraction for veneer placement on the lateral incisors.

Fig. 16b. Floss is used for a clampless procedure.

The above-mentioned sequenced placement procedure – starting with the central incisors and then moving on to the laterals - is highly recommended: This protocol gives the practitioner full control over the positioning of the central incisor veneers, which is particularly important as their position has a massive impact on the overall appearance of the smile. When the lateral incisor veneers are cemented first, the risk of positioning errors in the central incisor region and resulting catastrophic aesthetic issues is increased. However, any error with the positioning of the central incisor veneers can also lead to problems like the misfit of the lateral incisor veneers. Therefore, the whole procedure needs to be carried out with utmost care and precision.

A robust curing protocol with palatal, incisal and facial light exposition is crucial to ensure that the resin cement is fully set. Figures 17a to c show the veneers in place. Controlled removal of any residual excess was accomplished with ultrahigh molecular weight polyethylene (UHMWPE) floss (Gorilla Floss) used to avoid damaging the margins. For final polishing of the ceramic-tooth interface, polishing rubbers were employed. Rubber dam remained stable throughout the procedure.

The immediate treatment outcome is shown in Figure 18. It is completely normal for the gums to appear red and feel slightly sore following cementation. This is a temporary response, which should improve quickly as the tissue begins to heal. With a consistent and proper oral hygiene routine, the soft tissues will recover fully over the coming days. This has to be communicated to the patient well following rubber dam removal.

Fig. 17a. Lateral incisor veneers after placement and excess removal.

Fig. 17b. All four ceramic veneers in place.

Fig. 17c. Appearance of the veneers after floss removal.

Fig. 18. Immediate post-operative appearance.

Fig. 19. Check-up after three weeks.

FINAL SITUATION

Fig. 20a. Final photographic records: Frontal view.

Fig. 20b. Final photographic records: Lateral view from the left.

Fig. 20c. Final photographic records: Lateral view from the right.

Fig. 20d. Final photographic records: Occlusal view.

FOLLOW-UP VISIT

A check-up appointment is crucial in that it allows clinicians to assess the state of the soft tissue, which was fully recovered in the present case after three weeks (Fig. 19). Even more importantly, however, it enables us to check how our patients are adapting to their new smiles. This is also the best time to take a final photographic record (Figs. 20a to d). At this appointment, it is also essential to check for any excess material left interproximally: It can result in chronic inflammation, leading to persistent redness and an unaesthetic appearance of the final restorations. By careful inspection of the restorations from the occlusal view, it is possible to make sure all excess is removed and optimal gingival health is maintained.

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Clinical case by Dr Manuel Tinto

Nowadays, minimally invasive techniques aimed at preserving healthy tooth structure are favoured for the direct restoration of teeth in the posterior region. Universal materials used in this context make it possible to reduce the chair time while supporting high-quality aesthetic and functional results.

The following case example illustrates the combined use of Caries Detector, CLEARFIL™ Universal Bond Quick 2, CLEARFIL MAJESTY™ ES Flow Universal Low and Super Low, and CLEARFIL MAJESTY™ ES-2 Universal (all Kuraray Noritake Dental Inc.) for the treatment of two interproximal lesions on the maxillary right second premolar and first molar (FDI notation: teeth # 15 and 16; Fig. 1).

Fig. 1. Pre-operative photograph.

To guide the selective removal of carious dentin, Caries Detector was used, allowing visual distinction between infected and affected dentin (Figs. 2 and 3). Excavation was performed dry, at low speed, using a Cera-Bur bur until complete removal of the dye. This resulted in clean, non-geometric cavities (Fig. 4).

Fig. 2. Application of Caries Detector.

Fig. 3. The more intense the colour, the more carious the tissue.

Fig. 4. Finished and cleaned cavities.

After matrix placement (Figs. 5 and 6), a universal adhesive (CLEARFIL™ Universal Bond Quick 2) was applied (Fig. 7). This product produces a thin film and offers excellent wettability, making it particularly suitable in the presence of undercuts. We prefer an adhesive approach with selective enamel etching for 15 seconds. CLEARFIL MAJESTY™ ES Flow Universal Low (Fig. 8) was placed on the cavity floor to level out irregularities, followed by reconstruction of the interproximal walls using CLEARFIL MAJESTY™ ES-2 Universal paste. The Quad Matrix system allows both walls to be shaped simultaneously.

Fig. 5. Matrices in place and double-ended wedge (Quad Matrix) to improve the cervical seal on both matrices.

Fig. 6. Quad Matrix ring in position.

Fig. 7. Application of CLEARFIL™ Universal Bond Quick 2 after selective enamel etching (15 s).

Fig. 8. Placement of CLEARFIL MAJESTY™ ES Flow Universal (U) Low as a cavity liner.

The Class I cavity was completed by layering two materials:

• CLEARFIL MAJESTY™ ES Flow Universal (UD) Super Low for deep and difficult-to-reach areas, simulating dentin.
• CLEARFIL MAJESTY™ ES-2 Universal for the final layer, thanks to its handling, strength and aesthetics. The universal shade blends in perfectly with the surrounding structure (Figs. 9 to 11).

Fig. 9. Restorations carried out using a combination of flowable composite and paste composite.

Fig. 10. Finished restorations refined and polished under rubber dam.

Fig. 11. Finished restorations after checking of the occlusal contacts.

FINAL CONSIDERATIONS

Caries Detector allows selective removal of infected dentin while preserving healthy tooth structure. CLEARFIL™ Universal Bond Quick 2 provides for optimal penetration even in complex cavities. The combination of CLEARFIL MAJESTY™ ES-2 and ES Flow materials provides precise filling, natural aesthetics and long-term durability. Finally, the utilization of universal materials simplifies the clinical protocol, resulting in predictable, minimally invasive and long-lasting restorations.

USER FEEDBACK ON PROCEDURES AND OUTCOMES

The use of universal products – whether solitary or combined – offers practical benefits, which are experienced differently depending on the clinical context, techniques selected and each user’s individual preferences. Key advantages include reduced treatment time, lower costs, fewer components and steps, fewer potential errors and ultimately more satisfied patients. The following compilation of statements from experienced dental practitioners on the universal concept and the products offered by Kuraray Noritake Dental Inc. in general will help you assess in what way they might allow you to elevate your workflows.

RATIONALIZING CLINICAL WORKFLOWS

Streamlining or rationalizing clinical workflows in restorative dentistry is always worth striving for. Procedures are often complex and materials demand strict adherence to recommended protocols, so that using universal solutions with standardized protocols for a wide range of indications is a promising approach. Dr José Ignacio Zorzin, Associate Professor at the Department of Operative Dentistry and Periodontology at the Friedrich-Alexander-University of Erlangen-Nürnberg in Erlangen, Germany, stated in an article: “Rationalizing clinical workflows: This is the main reason for the use of universal products in adhesive dentistry. They are suitable for a wide range of indications and different application techniques, fulfil their tasks with fewer components than conventional systems and often involve fewer steps in the clinical procedure.”

INCREASING PREDICTABILITY AND EFFICIENCY

Predictability and efficiency in direct posterior restoration procedures are the main reasons for Dr Koray Kendir, the co-founder of a private dental clinic in İzmir, Turkey to choose universal adhesives and composites. In a case report, he stated that “the combination of CLEARFIL™ Universal Bond Quick 2 and CLEARFIL MAJESTY™ ES Flow Universal allows clinicians to perform predictable, efficient posterior restorations. Their universal applicability and handling properties align with the “Universal Excellence” concept, supporting simplified, yet reliable daily practice.”

Fig. 1. Clinical image from the case report of Dr Koray Kendir: Cavities ready for the restorative procedure.

Fig. 2. Clinical image from the case report of Dr Koray Kendir: Occlusal view of the teeth restored with a universalshade flowable composite with super-low flowability.

GETTING A GRIP ON COSTS

Dr Alessandro Devigus, the owner of a private practice in Bülach, Switzerland, shared in an interview that the cost factor is most important for him: “In the first place, using fewer products and components that are easy and quick in their application allows me to get a grip on costs. With fewer steps and fewer bottles, shortened application times and standardized workflows, the time a patient needs to sit in the chair is reduced, which allows me to save the most valuable factor in the office: my time.” And there is even more to it: “At the same time, material storage and order management are streamlined, so that it is much easier to keep track of dates of expiry, hence saving material costs as well. And the best thing about it is that all these savings are possible without compromising treatment quality,” he continued.

If you would like to benefit from the described workflow enhancements, it is probably worth giving universal excellence products from Kuraray Noritake Dental Inc. a try. For those who prefer to start with a single universal solution instead of transforming whole procedures immediately, the following feedback from clinicians may be enlightening.

UNIVERSAL CLEANER: SUITABLE EVEN FOR USE IN THE PATIENT’S MOUTH

The probably most special feature of KATANA™ Cleaner is its universal applicability. It cleans not only virtually every restorative material very well, but also works intra-orally to clean enamel and dentin after tooth preparation. Dr Richard Young from San Bernadino, CA, USA, uses it intra- and extra-orally, stressing that it “contains MDP based surfactant that breaks down blood and saliva – removing contamination.”

Fig. 3. Extra-oral application of KATANA Cleaner to remove contamination from a lithium disilicate crown by Dr Richard Young.

Fig. 4. Intra-oral application of KATANA Cleaner to remove contamination from the prepared tooth by Dr Richard Young.

UNIVERSAL ADHESIVE: SKIPPING THE WAITING TIME

Zero waiting time is probably the most striking feature of CLEARFIL Universal Bond Quick 2. While other universal adhesives need to be rubbed into any surface extensively, the product is applied within a few seconds. This reduces the risk of contamination and saves time. Based on his clinical experience, Dr Kendir confirmed that it works well: “In this case, CLEARFIL Universal Bond Quick 2 provided strong adhesion with minimal application time.”

Talking about universal adhesives in general, Dr Zorzin stressed that adhering to the protocols described in a material manufacturer’s instructions for use is particularly important: “Universal adhesives contain lots of different technologies in a single bottle. While this fact indeed allows users to rationalize their clinical procedures, it also requires some special attention. As every highly developed material, universal adhesives need to be used according to the protocols recommended by the manufacturer.” For CLEARFIL Universal Bond Quick 2, this protocol is particularly easy.

UNIVERSAL COMPOSITES: GREAT SHADE-MATCHING PROPERTIES

Lately, an experienced user of CLEARFIL MAJESTY™ ES Flow, Dr Michał Jaczewski from Legnica in Poland, tested the universal-shade option CLEARFIL MAJESTY ES Flow Universal – also in the low flowability variant. He confirmed that the reduced number of shades works well: The product “offers properties which are – from a personal perspective – ideal for the flowable injection technique. The shadematching properties are astonishing; the translucency is quite high when placed in thin layers (so that enamel is very well imitated), and the polishability is as good as that of CLEARFIL MAJESTY ES Flow. For virtually effortless, bubble-free injection, the product comes in a nicely designed syringe. And last but not least, the product’s mechanical properties provide peace of mind even in the posterior region.”

Fig. 5. Clinical image from the report of Dr Michał Jaczewski: Flowable composite injected into the transparent index.

Fig. 6. Clinical image from the report of Dr Michał Jaczewski: Central incisors beautifully restored.

According to Dr Jusuf Lukarcanin, MEDICANA International Hospital Izmir, Turkey, the same is true for the universal paste-type composite CLEARFIL MAJESTY™ ES-2 Universal. He states: “My first reaction to this material was: This is a Game-Changer. The results are magical. Smoother and easy handling properties, high-gloss, more natural light distribution and the process is simple. Aside from being able to skip the shade selection step, your workflow remains the same as with traditional composites. At first, I might have been a little sceptical about replacing all the different colours of composites we use in office every day. But after a couple of tries I found out that it indeed works every time, in some cases even without the use of a blocker. Simply ingenious!”

Fig. 7. Clinical image from Dr Jusuf Lukarcanin: Diastema closure in a 28-year-old female patient - initial clinical situation.

Fig. 8. Clinical image from Dr Jusuf Lukarcanin: Diastema closure in a 28-year-old female patient - upper anteriors treated with CLEARFIL MAJESTY ES-2 Universal in the shade UW.

UNIVERSAL RESIN CEMENT: NO PRIMER NEEDED

Primer for tooth structure, cement paste, ceramic primer and silane: PANAVIA™ SA Cement Universal has it all in a single syringe. With no extra bottles needed, it provides for streamlined cementation procedures. That is why Dr Devigus uses it as his standard solution for definitive placement of CEREC overlays and crowns: “It bonds to virtually every surface including lithium disilicate without a separate primer and offers a good flowability that facilitates restoration placement. An additional feature contributing to a quick and stress-free clinical procedure is its easy and gingiva-friendly excess removal after tack curing.”

Watch the video to hear what exactly Dr Alessandro Devigus says about PANAVIA SA Cement Universal:

CONCLUSION

Experience shared by clinicians from different clinical environments demonstrates that universal solutions can make restorative dentistry more efficient, predictable and economical. By reducing the number of materials, steps and technique sensitivities, universal products help streamline workflows while maintaining high clinical performance.

Smooth and efficient procedures, easy shade matching, and great clinical outcomes are key expectations in modern restorative dentistry. Kuraray Noritake Dental Inc. continues to support these needs through ongoing innovation in advanced dental materials. Building on the success of CLEARFIL MAJESTY™ ES Flow, with its multiple flowabilities and extensive shade range, a flowable composite with a simplified universal shade concept was developed.

Launched in Europe in 2025, CLEARFIL MAJESTY™ ES Flow Universal is available in two flowabilities – Super Low and Low. It is a highly filled flowable composite featuring submicron fillers (Super Low: 78% and Low: 75% by weight, respectively) and light diffusion technology.

Its universal shade system allows one shade (U) to cover the VITA classical A1-D4 system shades. For cavities in darker teeth (B3 and darker shades) with limited surrounding tooth structure – such as Class III and IV cavities – a second darker shade (UD) is available.

While the material is available in two flowabilities in Europe, Super Low is the variant offered in the United States and tested by the Dental Advisor.

CLEARFIL MAJESTY ES Flow Universal is gaining increasing clinical acceptance thanks to:

• A simplified two-shade concept
• Excellent handling properties
• High mechanical strength – comparable to paste-type composites
• Easy polishing and long-lasting gloss
• A well-designed syringe and tip system that helps minimise voids and dripping

DENTAL ADVISOR RESEARCH AWARD

Laboratory tests confirm strength, stability, and efficient placement

Independent in-vitro testing conducted at the Dental Advisor Biomaterials Research Center demonstrated that CLEARFIL MAJESTY ES Flow Universal (Super Low) delivers some of the highest physical property values within its class, including flexural strength, fracture toughness, and compressive strength.

The material also showed excellent shade matching across a broad range of tooth shades when compared with other universal-shade composites. Radiographic analyses further confirmed that the syringe and tip design contribute to minimal void formation, supporting reliable and efficient placement. Viscosity testing revealed a low-flow, no-slump consistency, allowing precise anatomical sculpting and controlled cusp build-up.

These results were key factors in earning the Dental Advisor Research Award, which recognizes outstanding physical property testing and a strong commitment to research-driven product development.

Dental Advisor Top Product Award

Clinicians praise handling, translucency, and blend-in ability

Beyond laboratory performance, CLEARFIL MAJESTY ES Flow Universal (Super Low) also excelled in clinical practice, which was a key factor in earning a Dental Advisor Top Product Award. Evaluators highlighted its ideal viscosity and impressive blend-in ability achieved through optimised translucency, light diffusion technology and fine-tuning of the chroma.

The simplified shade system and delivery design translated into confident, predictable results in daily practice, as reflected in evaluator feedback such as: "Excellent shade matching and no air bubbles." These attributes make the material well suited for a wide range of restorative applications in both anterior and posterior regions.

Scientific excellence and clinical practicality smartly combined

By receiving both the Dental Advisor Research Award and the Top Product Award, CLEARFIL MAJESTY ES Flow Universal (Super Low) demonstrates a strong balance of scientific excellence and clinical practicality. Its combination of simplified shade matching, high mechanical performance, and convenient handling makes it a versatile solution for clinicians seeking efficiency without sacrificing aesthetics or strength.

Part of Expanding Universal Excellence Portfolio

At Kuraray Noritake Dental Inc., we understand the demands of modern dental practices. Balancing complex procedures, tight schedules, and patient care is no easy task. That is why we have spent years refining our materials—so you can focus on what matters most: your patients.

Our Universal Excellence portfolio streamlines your workflows, offering you high-quality materials and tools that work seamlessly with your expertise.

CLEARFIL MAJESTY ES Flow Universal is the latest resin-based addition to our universal portfolio. Being suitable for a wide range of applications within direct and indirect restorative workflows, it is a valuable complement to existing universal paste-type composite CLEARFIL MAJESTY™ ES-2 Universal and universal resin cement PANAVIA™ SA Cement Universal.

For more information, visit Dental Advisor and the Kuraray Noritake Dental Europe website.

Intervjuu Takehiro Kameyaga, Kuraray Noritake Dental Inc. tehnoloogiaosakonna juhiga.

Kuidas te tuvastasite vajaduse universaalse voolava komposiidi järele?

Topeldatavad komposiidid universaalse värvitooni kontseptsiooniga on muutumas üha populaarsemaks kogu maailmas. See asjaolu pani meid eeldama, et on olemas nõudlus ka voolava komposiidi järele. Kasutajad saavad kasu ka lihtsustatud protseduuridest ja väiksemast laos hoitavate toonide arvust, mis avaldab positiivset mõju varude haldamisele. Seetõttu tutvustasime universaalset voolavat komposiiti Jaapanis, kus see on juba saavutanud märkimisväärse turuosa. Kasutajad on seda rakendanud erinevates kliinilistes olukordades ja tagasiside on olnud väga hea. Kuna toode võeti Jaapanis väga hästi vastu, pöördusime Euroopa meeskonna poole, et laiendada toote turuletoomist Euroopasse, ja otsustati toode turule tuua. Toodet  arendati ja viidi turule väga lühikese, ligikaudu ühe aasta pikkuse perioodi jooksul.

Kas universaalse topeldatava variandi kõrval universaalse voolava komposiidi kasutamine loob tõesti lisaväärtust?

Jah, kaasaegse voolava komposiidi lisaks kasutamisest tuleneb mitmeid eeliseid. Seda seetõttu, et erinevalt varasematest toodetest pakub uusim põlvkond voolavaid komposiite piisavat mehaanilist tugevust, et neid saaks kasutada tavaliste restauratiivsete tööde jaoks. Voolava komposiidi kasutamise eelised hõlmavad võimet voolata isegi (mõnikord keerulise) kaviteedi kõige kitsamatesse osadesse, mis võimaldab lihtsat ja kiiret täitmist ning tihedat kohandamist adhesiivse pinnaga, mis tagab tiheda ääresulu.

Mis on erinevused CLEARFIL MAJESTY™ ES Flow ja CLEARFIL MAJESTY™ ES Flow Universal vahel?

CLEARFIL MAJESTY™ ES Flow Universal säilitab CLEARFIL MAJESTY™ ES Flow,  eripärased omadused, nagu mugav doseerimine, käsitsemine ja vormimine, äärmiselt lihtne ja kiire poleerimine, pikaajaline läige ja suurepärased mehaanilised omadused. Tänu suurele mehaanilisele tugevusele saab mõlemat toodet kasutada mitte ainult aluskihtidena, vaid ka tavaliste otseste restauratsioonide jaoks. Erinevus peitub värvitooni kontseptsioonis. CLEARFIL MAJESTY™ ES Flow Universal tutvustab universaalset värvitooni süsteemi, mis võimaldab materjalil kohanduda laia värvitoonide valikuga, kasutades vähem toonivariante.

Palun kirjeldage CLEARFIL MAJESTY™ ES Flow Universal toonide kontseptsiooni. Kui palju toone on saadaval ja kuidas neid valitakse?

CLEARFIL MAJESTY™ ES Flow Universal toonide valik koosneb kahest toonist: Universal (U) ja Universal Dark (UD). U on suurepärane valik kõikidele tagumiste hammaste restauratsioonidele, sõltumata soovitud toonist. Eesmise piirkonna ja kaelapiirkonna (III, IV ja V klassi kaviteetide) puhul sobib U kõige paremini hammaste toonidega A1 kuni A3 (sh B1, B2, C1, C2, D2, D3 ja D4) taastamiseks, samas kui UD on parim valik sihttoonide A3.5 kuni A4 (sh B3, B4, C3 ja C4) jaoks.

Värvi sobitamine eesmise ja tagumise restauratsioonidega

Miks pakute lisatooni eesmise piirkonna jaoks?

Universaalsed komposiidid peavad võtma ümbritseva hambakoe värvi, et saavutada täiuslik sobitus suure hulga sihttoonidega. Tagumises piirkonnas on tavaliselt saadaval suured kogused ümbritsevat hambastruktuuri, mitu kaviteedi seina on säilinud. See hõlbustab hamba värvi omaksvõtmist võrreldes eesmise piirkonna kaviteetidega. Eesmises piirkonnas läbib valgus materjali kergemini, nii et komposiidi enda värv peegeldub tõenäolisemalt. See võib põhjustada piiranguid värvisobivuses CLEARFIL MAJESTY™ ES Flow Universal, puhul osutus tagumises piirkonnas ideaalseks toon U, kuid tumedamate eesmiste hammaste restauratsioonide puhul ilmnesid teatud värvisobivuse piirangud. Seetõttu otsustasime pakkuda teist värvivalikut, mis on spetsiaalselt loodud sellisteks olukordadeks. U ja UD toonidega pakub CLEARFIL MAJESTY™ ES Flow Universal suurepärast värvi kohandatavust heledatest tumedate toonideni ja vastab seega täpse värvi sobitamise vajadusele eriti eesmise piirkonna puhul.

Vaid kahe komposiitvärvi väljatöötamine nii paljude sihthambavärvide katmiseks tundub keeruline. Kuidas hindasite, kas saadaval olevad toonid on kliinilises keskkonnas sobivad?

Tõepoolest, oli üsna keeruline arendada U-tooni, mis sobiks laiemale hamba värvide valikule nii ees- kui tagahammaste puhul kui CLEARFIL MAJESTY™ ES-2 Universal U-toon. Selleks, et hinnata ja täiustada meie arendatud toone, viisime korduvalt läbi täidismaterjalide teste, kasutades laia valikut eksperimentaalseid toone kunsthammastel ja eemaldatud hammastel erinevate värvitoonidega. Lisaks hinnati lõplikku toonide valikut visuaalselt, konsulteerides hambaarstidega, kes kasutasid komposiiti kliinilises keskkonnas.

Millised on suurimad väljakutsed seoses õige tooni määramise ja valimisega kliinilises keskkonnas?

Klassikalise tooni määramise peamine puudus on see, et see lihtsalt pikendab ravi aega. Nii hambaarsti kui ka patsiendi jaoks on aga ravi kestuse minimeerimine oluline eesmärk, kuna see vähendab kulusid ja suurendab patsiendi mugavust. Tõeline puudus aja ja mugavuse mõttes on värvi mittevastavus, mis tekib värvitooni määramise vea tõttu: see võib nõuda suuõõnes kohandusi või halvimal juhul uue restauratsiooni tegemist.

CLEARFIL MAJESTY™ ES Flow Universal on saadaval kahe viskoossusega – madala ja supermadala (Low ja Super Low). Miks see nii on ja milline on nende kasutamise erinevus?

Otsustasime pakkuda kahte tüüpi voolavust erinevate tiksotroopsete omadustega, et rahuldada kasutajate eelistusi käsitsemise osas. Põhimõtteliselt ei ole madala ja supermadala kasutamisel vahet. Siiski soovitame kasutajatel valida komposiite erinevate tiksotroopsete omadustega vastavalt oma eelistustele ja konkreetsele juhtumile. Näiteks on Super Low variant kasulik tagumiste hammaste oklusaalpindade kujundamisel. Low variandi saab laialdaselt kasutada kaelapiirkonna defektide katmiseks ja täitmiseks ning proksimaalsetel pindadel.

CLEARFIL MAJESTY™ ES Flow Universal – suurepärased mehaanilised omadused

Millised tehnoloogiad tagavad CLEARFIL MAJESTY™ ES Flow Universal suurepärase sulandumise?

Tõenäoliselt kõige populaarsem selles tootes kasutatav tehnoloogia on meie patenteeritud valguse hajutamise tehnoloogia (LDT). Määratlesime optimaalse valguse hajutamise, lähtudes vaatlusest, et tugev hajus peegeldus langevast valgusest põhjustab valgendavat efekti, samas kui nõrk valguse hajumine soodustab tumedate toonide omandamist suuõõnes, muutes täidise piirkonna visuaalselt tumedamaks. Lisaks keskendusime kroma kohandamisele: universaalne värvitooni kontseptsioon põhineb võimel omaks võtta ümbritseva hambakoe värvus ja sellega sulanduda. Seetõttu oleme seadnud kroma nii, et see oleks hõlpsasti ühtlustatav laia valiku hambavärvidega. Lõpuks reguleeriti materjali läbipaistvust submikroonsete täiteainete ja räniklastrite abil. Oluliste arvamusliidrite hinnangud aitasid meil määrata sobiva läbipaistvuse taseme.

Kuidas toimida juhul, kui hammaste struktuur on allpool värvunud – kas on vaja maskeerida blokeerija või opaakiga?

Vajadus sõltub värvimuutuse astmest. CLEARFIL MAJESTY™ ES Flow Universal, i valguse hajutamise omaduste tõttu peetakse üldiselt, et blokeerimine ei ole vajalik ja sobivat varjundit on võimalik saavutada. Kuid tõsise värvimuutuse korral võib olla kasulik täita kaviteedi põhja CLEARFIL MAJESTY™ ES Flow,  toonidega A2D või A3D või kasutada CLEARFIL™ ST Opaquerit.

Mida tegite, et vältida tühimike tekkimist aplitseerimise ajal?

Oleme kasutanud sama pakendi disaini, mida kasutatakse CLEARFIL MAJESTY™ ES Flow puhul, et vältida tühimike tekkimist ka selles tootes. Uuendusliku disainiga pakendis on vähendatud nõela otsa ja süstla vaheline vahe kui ots on kinnitatud.

Kas on mingeid soovitusi, millal kasutada CLEARFIL MAJESTY™ ES Flow ja millal valida CLEARFIL MAJESTY™ ES Flow Universal?

Kui universaalset varianti saab kasutada üldisteks rakendusteks - alusmaterjalina või tavalisteks restauratsioonideks, nagu on kirjeldatud kasutusjuhendis, siis CLEARFIL MAJESTY™ ES Flow sobib juhtudeks, kus hambakude kaetakse ja kogu hamba värvi on vaja muuta. Direktsed laminaadid on selleks ideaalne näide. Sellistes olukordades on erinevate toonide ja läbipaistmatuse kasutamine selgelt kasulik.

Milline on voolavate komposiitide tulevik?

Kuna teave kliinilise toimivuse ja füüsikaliste omaduste kohta levib jätkuvalt, suureneb Euroopas usaldus voolavate komposiitide vastu, mis toob kaasa nende laialdasema kasutamise. Lisaks on oodata nõudluse suurenemist, kuna arendatakse täitemetoodikaid, kus kasutatakse voolavaid komposiite koos vormide või matriitsidega.

TAKEHIRO KAMEYA

Today's dental practitioners are expected to deliver highly aesthetic, minimally invasive treatments that last – often within tighter schedules, with fewer assistants and under increasing financial and operational pressure. These factors can lead to elevated stress levels. With high patient expectations and a multitude of treatment options available, clinicians must make numerous decisions while the complexity of clinical procedures continues to increase.

Being aware of these dynamics and the associated challenges, Kuraray Noritake Dental Inc. has developed materials designed to make the clinician's work easier in many respects.

ADHESIVE DENTISTRY: OPPORTUNITIES AND CHALLENGES

To better understand this approach, let us take adhesive dentistry as an example. Being the driving force behind less invasive tooth preparations and the use of highly aesthetic tooth-coloured materials such as composites and ceramics, adhesive dentistry has significantly improved restorative dental care.

At the same time, the need to establish a strong and durable chemical bond between tooth structure and restorative material has made clinical procedures more complex than ever. Daily challenges include selecting the appropriate material and technique, preparing tooth structure correctly, controlling moisture and contamination, managing etching and pre-treatment protocols for each restorative material, and layering restorations predictably.

Intelligent simplification: Reducing complexity without compromising quality

The solutions Kuraray Noritake Dental Inc. has developed in recent years are materials that adapt to multiple indications, techniques and substrates – without adding procedural burden. The focus is not simply on innovation, but on meaningful innovation, leading to materials that genuinely streamline and simplify workflows.

While individual universal materials already offer flexibility, the thoughtful combination of compatible products can truly transform clinical procedures. When materials are designed to work together seamlessly, efficiency increases and variability decreases.

Universal product combinations from Kuraray Noritake Dental Inc. are designed to:

• Reduce the number of clinical steps
• Decrease technique sensitivity
• Improve workflow efficiency
• Simplify inventory management
• Reduce overall costs
• Support consistently high-quality treatment outcomes

The goal is not simplification for its own sake. Instead, the aim is to reduce complexity while maintaining the high performance required for predictable and durable clinical outcomes.

By aligning product features with proven clinical protocols, Kuraray Noritake Dental Inc. enables practices to work smarter, not harder.

Universal Excellence: product portfolio for simplified restorative procedures

The universal product portfolio of Kuraray Noritake Dental Inc. consists of five core products: The universal bond CLEARFIL™ Universal Bond Quick 2, the paste type composite CLEARFIL MAJESTY™ ES-2 Universal, the flowable alternative CLEARFIL MAJESTY™ ES Flow Universal, the universal resin cement PANAVIA™ SA Cement Universal and KATANA™ Cleaner as a universal cleaning solution designed for intra- and extra-oral use.

DENTAL ADVISOR HIGHLIGHTS THE SUITABILITY OF KATANA Cleaner FOR INTRA-ORAL USE

Clean surfaces – whether tooth structure or restorative materials – are essential for reliable and long-lasting adhesion in restorative dentistry. To achieve this, clinicians require a cleaning agent that removes contaminants such as blood or saliva efficiently and thoroughly, without adding complexity to the workflow. KATANA™ Cleaner was developed by Kuraray Noritake Dental Inc. to meet these clinical demands.

 
Recognized with a 2026 Research Award in the category Research – Restoration Cleaner, KATANA Cleaner is a truly universal cleaning solution for both restorations and tooth structure. Designed for intra-oral and extra-oral use, it contains MDP salt, which effectively removes contamination from a wide range of surfaces, supporting bond integrity during adhesive procedures.

 
Key benefits of KATANA Cleaner include:

• High cleaning efficacy based on the surface-active characteristics of MDP salt
• Mild pH value (4.5), allowing effective intra-oral application
• Simple, time-efficient application requiring just ten seconds of surface rubbing 

DENTAL ADVISOR RESEARCH AWARD: RECOGNITION FOR CLEAN SURFACES THAT SUPPORT OPTIMAL BOND STRENGTH

The Dental Advisor Research Team conducted in-vitro testing to evaluate the cleaning performance of KATANA Cleaner and its impact on bond strength with indirect restorative substrates. In these studies, zirconia and lithium disilicate surfaces were contaminated with saliva and subsequently treated with KATANA Cleaner. SEM analysis revealed virtually perfect surface cleanliness, which contributed to optimal bond strength levels. The Research Team also noted that KATANA Cleaner is “one of the few products commercially available that can be used intra-orally...”

SUITABLE SOLUTION FOR MANAGING CONTAMINATION

With its universal applicability, gentle yet highly effective cleaning effect and proven ability to restore optimal bond strength, KATANA Cleaner offers clinicians an excellent solution for managing contamination in adhesive dentistry. Its recognition with a 2026 Dental Advisor Research Award underscores its relevance and highlights its suitability for a wide range of indications.

PART OF EXPANDING UNIVERSAL EXCELLENCE PORTFOLIO

At Kuraray Noritake Dental Inc., we understand the demands of modern adhesive dentistry. Reliable adhesion depends not only on high-performing bonding materials, but also on proper surface preparation and contamination management throughout the workflow.

That is why KATANA Cleaner is part of our expanding Universal Excellence portfolio. Designed for both intra-oral and extra-oral use, it helps clinicians optimize adhesive procedures by efficiently removing contamination from tooth structure and restorative materials.

Supporting clean bonding surfaces in a simple and time-efficient manner, KATANA Cleaner complements restorative workflows involving products such as CLEARFIL™ Universal Bond Quick 2 and PANAVIA™ SA Cement Universal — contributing to predictable and durable adhesion across a wide range of clinical indications.

For more information, visit Dental Advisor at dentaladvisor.com.