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A face-to-face talk between Mr. Matsuyama and Ms. Ban

- A commemoration of the company’s 10th anniversary –

 

We asked Mr. Sadaaki Matsuyama, who was then the president of Kuraray Medical, and Ms. Kiyoko Ban, who was then the company advisor of Noritake Dental Supply, about episodes that occurred during the business integration between their two companies.

 

What were your impressions of each other at that time?

 

Ms. Ban: I had known Mr. Matsuyama for about 10 years before the integration. When I first met him, I got the idea he was "scary," but as we talked I discovered we had a nice rapport. I finally came to the firm conclusion that he is a very pleasant person!

 

Mr. Matsuyama: We made some small talk when we met at exhibitions, and because we used the same distributors in Japan, we had many opportunities to talk to each other at New Year's parties and other distributors’ gatherings. She said that I looked "scary", but at first I felt that Ms. Ban looked quite tough (laughs). Later, I came to have the impression that she was someone with whom I could talk frankly.

 

What were your impressions of each other's companies before the integration?

 

Ms. Ban: Kuraray had entered the dental industry before Noritake did and they were well known in the field of dental adhesives. I respected them. We had something in common, in that we were both companies that had not specialized in dentistry, but were now doing business in this new-to-us field.

 

Mr. Matsuyama: Noritake occupies a high share in Japanese dental ceramics market and Kuraray occupies a high share in Japanese dental adhesives market, so neither company had a big lineup of dental products. Neither of us was a great big company doing extensive business in the dental industry. Still, it seemed to me that we both had outstanding, worldwide-recognized technological capabilities.

 

How did the two companies turn up with the idea of integration?

 

Ms. Ban: Actually, even before we began to consider the possibility of integrating, the topic of integration came up several times during casual chats among Kuraray staff. Later, when Mr. Matsuyama, who had been working in China, returned to Japan, I began to think that we would be able to draw up a more concrete global strategy if we worked together. Finally, when Mr. Matsuyama was appointed president of Kuraray Medical, I remember that a specific discussion of integration came up between the two companies.

 

Mr. Matsuyama: At that time, just as Ms. Ban said, Kuraray Medical was also seriously considering a global strategy. We were thinking, "We ought to get serious about expanding our business in the global market." From a global perspective, it was clear we needed to show our face on the world market. I also had the feeling that, to succeed at that, we had to add "something" to the company as it was, in order to achieve this global expansion. It was while I was still mulling this over that the topic of business integration came up, and I saw right away that we had no choice but to move forward with this. If we intended to expand our business further and advance more aggressively into overseas markets, I thought that the integration of Noritake Dental Supply, the number one company in "inorganic" materials and Kuraray Medical, the first in "organic" materials would have a global impact and that it would be very beneficial to both companies.

 

Ms. Ban: Before the integration, dental materials divisions of Kuraray and Noritake had worked together in the development of dental restoration system called CLAPEARL*. Kuraray made the cement and Noritake made the porcelains suitable for use with the cement. Kuraray and Noritake have had a pretty darned good relationship since that time.

 

*Limited to Japan, dental restoration system consisting of several components used for porcelain laminate veneer restorative treatments. Only its dual-cure cement was exported to some areas under the name of CLEARFIL™ DC Cement.

 

I think the two companies integrated with each other to enhance their respective strengths further and overcome their weaknesses. What did you expect specifically?

 

Mr. Matsuyama: What I expected from this integration was that our people, who had been engaged only with adhesive materials, would be able to get into the world of porcelain materials. Also, I thought they would be able to widen their perspective on their own dental materials business, including how they conducted that business, by being on the inside of another company in a related field. I thought this would hold true of the employees at both companies.

 

Ms. Ban: That's right. We used to only look at ceramics-related areas, but after the integration, we began to pay attention to new cement products, and so on. During the early days after integration, at the IDS (International Dental Show: one of the world's largest exhibitions in the dental industry), our ceramics products and our adhesive products were displayed separately in our booth. I remember even back then I thought this was bad. Now, at exhibitions, our products are displayed in one booth, with ceramics and cement products arranged together, so visitors can take a look at both types of products at the same time. I think things have improved a lot compared with how they were at the beginning.

 

At the time, there was a lot of talk about "synergistic effects" arising from the integration. What kinds of synergistic effects did you first see and experience? Was it what you expected?

 

Ms. Ban: At the first IDS held after the birth of Kuraray Noritake Dental, I really felt the synergy arising from the integration. When I got to our booth, without even fully realizing what I was saying, I exclaimed: "This splendid booth shows what we can achieve by getting together!" I felt as if a great new company had been born. Besides, another thing that I feel great about this integration is the issue of intellectual properties. We were able to learn a lot about intellectual property rights after integrating with Kuraray Medical, and I am very thankful for that.

 

Mr. Matsuyama: I think the first one of the synergistic effects we obtained from the integration was that we were able to market our products from a wider perspective. For example, now that we sell CAD/CAM materials or ceramic materials, we are able to suggest suitable cements for them, as well. Previously, we could only say, "This is what we do with ceramics, and (separately) this is what we do with cements." But now, we can suggest products to customers that make up a total dental restoration system. This makes it easier for customers to get the whole picture of what we have available for them to buy. I thought that this was where the synergies from the integration first showed up.

 

Ms. Ban: People who know Kuraray Medical or Noritake Dental Supply well, such as those who are in the dental industry, including dentists, all said it was a wonderful integration. They all congratulated us on our integration. Kuraray Medical had long been recognized as a reliable dental adhesives manufacturer, while Noritake Dental Supply also had been accepted by many people in the dental industry as an excellent manufacturer of dental ceramic materials. I think that because both companies had good images, their integration was perceived even more favorably.

 

“Worthy addition to the PANAVIA dynasty of cements”

REALITY NOW rates brand-new PAVANIA™ Veneer LC

Just launched and already tested: REALITY RATINGS & REVIEWS has published a FirstLook evaluation of the brand-new PANAVIA™ Veneer LC, a purely light-cured resin cement for the permanent cementation of veneers and thin inlays and onlays. Based on laboratory testing, they conclude that “PANAVIA Veneer LC appears to be a worthy addition to the PANAVIA dynasty of cements.” The PANAVIA™ Veneer LC kit available in Europe consists of PANAVIA™ Veneer LC Paste, PANAVIA™ V5 Tooth Primer and CLEARFIL™ CERAMIC PRIMER PLUS.

 

During testing, the product features that are verifiable in a laboratory setting delivered no surprise: PANAVIA™ Veneer LC Paste is very well polishable with the polishing systems used, and the working time turned out to be exactly as long as specified by Kuraray Noritake Dental Inc. According to the evaluators, this working time is more than sufficient. While other possibly beneficial features – wear resistance and colour stability – were not put to a test, the evaluators were enthusiastic about the product’s handling properties. Their opinion: “The material itself has very nice handling properties, allowing easy seating of veneers with virtually no rebound. It is also not runny (flow is 5), but at the same time, it is not overly thick that you risk fracturing an ultrathin veneer. In addition, its consistency facilitates loading a veneer and cleaning the excess with minimal to no stickiness.”

 

 

Equipped with these favourable features, PANAVIA Veneer LC clearly has the potential to make your life easier during veneer cementation. Try-in pastes are available, the shade offering (four shades) is more than adequate and its close relatedness with PANAVIA™ V5 (which share technologies and system components) lets you use the product with confidence right from the start.

 

To view the full evaluation visit www.realityratings.com

 

CLEARFIL™ SE Protect: A uniquely antibacterial adhesive system

In the early 1990s, Kuraray introduced CLEARFIL™ LINER BOND 2, the first self-etching adhesive, to the world. Among the products that this system has led to is the award-winning CLEARFIL™ SE Protect, which was introduced in 2004 and remains highly valued by dental professionals across the world. By combining Kuraray Noritake Dental’s famed original MDP monomer with the antibacterial 12-methacryloyloxydodecylpyridinium bromide (MDPB) monomer, this self-etching adhesive is able to kill bacteria on contact. How is this possible? Let’s find out.

 

Pyridinium holds the key

 

The crucial element that provides CLEARFIL™ SE Protect with its antibacterial cavity cleansing ability is contained in the MDPB monomer. The pyridinium group in this monomer is positively charged, whereas the cell structures of bacteria are, generally speaking, negatively charged. This means that they are automatically attracted to the positively charged contact points of the MDPB monomer, causing these bacteria cell membranes to lose their electrical balance and be destroyed. This process—bacteriolysis—kills the bacteria.

 

The bactericidal mechanism of MDPB is presumed to be similar to that of the well-known antibacterial agent cetylpyridinium chloride, which is in many toothpastes and mouthwashes.

 

Certified biocompatibility

 

The MDPB monomer is immobilised during the polymerisation of the bonding and remains latently active without affecting the dental patient’s own cells. Unlike the situation when other cavity hygiene products are used, this process—patented by Kuraray Noritake Dental—does not have a negative impact on the bond strength and even ensures that there are no long-term cytotoxic effects on the patient’s own body cells such as odontoblasts. These results have been confirmed by the official biological evaluation for medical devices known as the ISO 10993 series.

 

Award-winning results with CLEARFIL™ SE Protect

 

With its antibacterial effect, high bond strength to enamel and dentine and long-term fluoride release, CLEARFIL™ SE Protect is reliable, versatile and future-proofed. This tried-and-tested two-step self-etching bonding system is fast and easy to use for direct restorations. For bonding indirect restorations and core build-ups, simply mix it with Kuraray Noritake Dental’s CLEARFIL™ DC Activator according to the instructions for use.

 

 

Thanks to its combination of MDP and MDPB monomers, CLEARFIL™ SE Protect leads to predictable, durable restorations—and it has received plenty of accolades from dental experts as a result. In 2022, this adhesive again received a Top Product Award in the Direct Restoratives, Bonding Agent: Self-Etch category from DENTAL ADVISOR. This was the fourth year in a row that it earned such recognition, and in addition, the 13 DENTAL ADVISOR consultants and editors gave CLEARFIL™ SE Protect a stunning 98% overall clinical rating.

 

Premolar case with CLEARFIL MAJESTY™ ES-2 Universal

Case by Dr. Clarence P. Tam, HBSC, DDS, AAACD, FIADFE

 

Case background

 

A stable ASA 2 65 year old female presented to the practice for restorative dentistry with a medical history significant for a non-descript immunoglobulin deficiency, for which she receives regular infusions. She reports no known drug allergies. Clinically, she was diagnosed with an occlusal peripheral rim fracture leaving a food trap on tooth 14 (FDI notation). Tooth 15 featured an extensive amalgam with extreme proximity to the distal marginal ridge, which exhibited distal vertical axial fractures as a result of cyclic expansion-contraction over time. The restorative goal of minimally invasive direct dentistry would be complicated by the undoubtedly dark dentin substrate under the amalgam. A material was sought that featured both an excellent chameleon mechanism as well as physical properties to maximize the prognosis of direct restorations in this area.

 

Restorative procedure

 

The patient was subjected to topical anesthetic prior to buccal infiltration using 1 carpule of 2% Lignocaine with 1:100,000 epinephrine. A rubber dam was affixed prior to preparation of tooth 15MO with dissection of the distal vertical marginal ridge fracture. The margins of tooth 14O and 15MOD were refined before bevelling as the ends of enamel rods facilitate better bonding relative to the sides of enamel rods. A 27 micron aluminum oxide micro air abrasion treatment was completed prior to affixing, wedge and matrix to reconstruct the mesial marginal ridge of tooth 15. A matrix-in-matrix solution was used to recreate the proximoaxial contour of 15D. This provided hermetic closure at the proximogingival cavosurface margin as well as an ideal contour for the missing axial wall.

 

 

Following a total etch technique, a 2% Chlorhexidine scrub was completed for 30 seconds and the dentin blot dried to a moist state. A 5th generation bond was applied, air thinned and cured as per manufacturer instructions. Microlayers are important during the delicate first 5 minutes of hybrid layer formation, and were completed using 0.25 mm increments of CLEARFIL MAJESTY™ Flow (Kuraray Noritake Dental Inc.). This technique can be expected to increase significantly the shear bond strength to dentin1,2.

 

 

This was completed both in the proximal box floor area as well as mid-occlusally. The marginal ridge was completed using CLEARFIL MAJESTY™ ES-2 Universal (Kuraray Noritake Dental Inc.). Since the dentin base was heavily stained, CLEARFIL MAJESTY™ Flow was used before utilizing CLEARFIL MAJESTY™ ES-2 Universal in a lobe-by-lobe creation of occlusal anatomy. Post-operative occlusal checks verify that the restoration is conformative to occlusion and esthetically excellent with no visible marginal show.

 

 

Rationale for material choice

 

The marginal ridges were micro-layered horizontally as was the floor of the resulting Class I preparation as per a reduced layer thickness-technique modification of Nikolaenko et al3, whereas the highest shear bond strengths were found when a 1mm horizontal layering technique was used.

 

CLEARFIL MAJESTY™ ES-2 Universal is at the forefront of a simplified restorative armamentarium for the modern practice. It takes cloud-shading one step further by offering a “Universal” shaded composite featuring Light Diffusion Technology (LDT) with simultaneous ideal sculptability, optical metamerism and physical properties for use in any restorative situation in the mouth. Featuring barium glass nano fillers and proprietary pre-polymerized nanoparticle fillers, the latter boasts a high refractive matrix that is able to disperse light and fool the eye with even the thinnest of layers, obviating the need for opaquer composites in cases like the one featured. When paired with CLEARFIL MAJESTY™ Flow in a conservative layered technique, the 81% filled flowable produces a radiographically well-demarcated layer, and the superficial CLEARFIL MAJESTY™ ES-2 Universal boasts an easy-to-polish robust single shade restorative solution that will virtually fulfil all of your restorative needs for non-bleaching patients. Physically, with compressive strength is rated at 348 MPa and flexural strength at 116 MPa, CLEARFIL MAJESTY™ ES-2 Universal is in the range of natural enamel and dentin. The built-in fluorescence is very enamelomimetic, which is excellent for nightclub social situations.

 

FINAL SITUATION

 

 

Dentist:

DR CLARENCE P. TAM, HBSC, DDS, AAACD, FIADFE

 

Clarence is originally from Toronto, Canada, where she completed her Doctor of Dental Surgery and General Practice Residency at the University of Western Ontario and the University of Toronto, respectively. Clarence’s practice is limited to cosmetic and restorative dentistry and she is well-published to both the local and international dental press, writing articles, reviewing and developing prototype products and techniques in clinical dentistry. She frequently and continually lectures internationally. Clarence is the Immediate Past Chairperson of the New Zealand Academy of Cosmetic Dentistry.

 

She is currently one of two individuals in Australasia to hold Board-Certified Accredited Member Status with the American Academy of Cosmetic Dentistry. Clarence is an Opinion Leader for multinational dental companies Kuraray Noritake, J Morita Corp, Henry Schein NZ, Ivoclar Vivadent, Dentsply Sirona, 3M, Kerr, GC Australasia, SDI and Coltene and is the only Voco Fellow in Australia and New Zealand. She holds Fellowship status with the International Academy for DentoFacial Esthetics and is a passionate and approachable individual, committed to having an interactive approach with patients in all of her cases to maximize predictability.

 

References

 

1. Bertschinger C, Paul SJ, Luthy H, Scharer P. Dual application of dentin bonding agents: effect on bond strength. Am J Dent. 1996;9(3):115-119.
2. Magne P, Kim TH, Cassione D, Donovan TE. Immediate dentin sealing improves bond strengths of indirect restorations. J Prosthet Dent. 2005;94(6):511-519.
3. Nikolaenko SA, Lohbauer U, Roggendorf M, Petschelt A, Dasch W, Franenberberger R. Influence of C-Factor and layering technique on microtensile bond strength to dentin. Dental Mater. 2004;20(6):579-585.

 

PANAVIA™ cements

Testimonial article by Dr. Troy Schmedding, USA

 

From PANAVIA™ EX to PANAVIA™ V5, Kuraray Noritake Dental Inc.‘s flagship product line of cements continues to evolve to offer reliable adhesion, enhanced ease of use, and superior esthetics.

 

Dentistry has certainly evolved in the years since Kuraray Noritake Dental Inc. developed the phosphate monomer MDP. But over the past 4 decades, it has rooted itself in restorative dentistry as the tried-and-true ingredient that clinicians rely on for strong adhesion to tooth structure as well as metals and zirconia. MDP is a key ingredient in the manufacturer’s flagship PANAVIA™ line of cements, which continues to evolve in line with a growing variety of indirect restorative materials from which to choose.

 

One example of this evolution is PANAVIA™ SA Cement Universal, one of the first true universal self-adhesive resin cements to hit the market. In addition to the original MDP monomer, it incorporates the LCSi monomer, a silane-based carbon chain in a dual-barrel system that forms a chemical bond with glass and ceramic materials.

 

“PANAVIA™ SA Cement Universal allows you to achieve a strong bond no matter which substrate is being used.”

- Troy Schmedding, DDS –

 

A STRONG BOND THAT’S SIMPLE TO CREATE

 

But all chemistry aside, what’s in it for the clinician? As dental educator and author Dr. Troy Schmedding points out, the key benefit of PANAVIA™ SA Cement Universal is eliminating the confusion over how to treat different substrates. This is because the material adheres to virtually every material without the need for a separate primer. “The plus side for the practitioner is that the confusion of ‚how do I condition zirconia‘ or ‚how do I condition glass ceramics‘ is no longer an issue because the paste formulation allows you to achieve a strong bond no matter which substrate is being used - whether it is the MDP monomer allowing strong adhesion to zirconia or the LCSi monomer forming a chemical bond with glass ceramics,” he shared.

 

DIALING UP THE AESTHETICS

 

Kuraray Noritake Dental Inc. considers PANAVIA™ V5 the most esthetic cement it has ever created. Available in 5 shades - White, Brown, Universal, Clear, and Opaque – it took researchers over 10 years to develop and features an anime-free catalyst that allows for superior colour stability and improved bond strength to dentin. And like its predecessors, PANAVIA™ V5 offers a simple cementation procedure that is compatible with all indications, from crown-and-bridge and implant abutments to ceramic inlays and laminate veneers.

 

“Kuraray Noritake Dental Inc. has an incredibly strong reputation in adhesive dentistry, so it should offer clinicians a lot of comfort and flexibility to partner with not only a reputable company, but one that continues to research and evolve their key products,” concluded Dr. Schmedding.

 

Dentist:

DR. TROY SCHMEDDING, DDS
USA

 

Article from Dental product shopper, vol. 14 No. 5

 

Work flow PANAVIA Veneer LC with PANAVIA V5 Tooth primer

Minimally invasive procedures using highly aesthetic restorations is what patients expect when they seek restorative treatment. With the various types of restorations available today, it is possible to meet these expectations – provided that the right materials are used.

 

For the placement of veneers, a resin cement must be selected that supports long-lasting aesthetics, is easily applied, offers a working time sufficient for simultaneous cementation of multiple restorations and provides excellent bond strength. The new “PANAVIA™ Veneer LC” is precisely what you need.

 

What is the workflow you ask? Check out the video to see the full workflow using PANAVIA V5 Primer and CLEARFIL Ceramic Primer Plus.

 

 

Excess removal with PANAVIA Veneer LC

One of the key features when talking about cements is the ease of removal of excess cement. Our newest cement - PANAVIA™ Veneer LC - offers the ideal paste consistency, a low film thickness and long working time.

 

But how about excess removal? Do you wonder how do we compare to other similar products?

 

Check out this video demonstrating an excess removal comparison between PANAVIA Veneer LC and other brands.

 

 

Dr Jorge Espigares on PANAVIA Veneer LC

Webinar recording Panavia Veneer LC - Dr Jorge Espigares

PANAVIA™ Veneer LC

Great solution for challenging task

PANAVIA™ family just got bigger! We are introducing the new PANAVIA™ Veneer LC – the specialist cement that offers aesthetics, excellent paste viscosity, easy handling and 200 seconds(!) working time under ambient light (8000 lux.). Coming in four different shades with matching try-in pastes from PANAVIA™ V5 system, it allows users to take into account the individual shade requirements and deliver highly aesthetic outcomes when cementing veneers, inlays and overlays.

Join our free webinar now and be the first to learn all the details about this new and exciting product from Kuraray Noritake Dental Inc..

 

 

 

 

ABOUT DR JORGE ESPIGARES, DDS, PHD

Dr. Jorge Espigares received his DDS degree at the Faculty of Dentistry, University of Granada in Spain and obtained his PhD degree under the supervision of Prof. Tagami at Tokyo Medical and Dental University in Japan. Specialized in Cariology and Operative Dentistry, Dr. Jorge Espigares has clinical experience in Spain and UK, and has authored and coauthored full-length research publications with his colleagues at TMDU.

 

Clinical Report about PANAVIA Veneer LC

PRESENTATION OF A STUDY WITH ILLUSTRATIVE CASES

by Dr. Yohei Sato, DMD, PhD and Dr. Keisuke Ihara, CDT.

 

INTRODUCTION

 

In recent years, the application and advancement of digital technology in dentistry has made it possible to accomplish the fabrication of highly accurate prosthetic zirconia appliances that were difficult to mill using the previously available technology. In addition, thanks to advances in adhesive dentistry and the advent of cements that bond strongly to a diverse range of materials, cements have come into wide clinical use that can cope with the many types of materials used for the fabrication of prosthetic appliances.

 

At our hospital, we select the treatment method most suitable for each case by appropriately specifying various types of prosthetic appliance according to the status of each case. For example, we may specify zirconia prosthetic restorations fabricated by the CAD/CAM system, or silica-based ceramic prostheses, or those made of lithium disilicate glass, as the case dictates.

 

PANAVIA™ V5 is a resin cement system that bonds strongly to various types of prosthetic appliance, as well as to tooth structure. PANAVIA™ Veneer LC, a new resin cement system developed by Kuraray Noritake Dental Inc., has suitable characteristics for bonding laminate veneers, using two types of primer that can be used in common with PANAVIA™ V5. Here are some clinical examples of its advantages as a resin cement system used for laminate veneers restorations.

 

 

HIGHLIGHTS september 2022 (EN)

 

Innovative technology behind PANAVIA Veneer LC

In this Highlights we discuss the technologies and how they contribute to the many benefits of the new PANAVIA Veneer LC

 

 

 

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