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In the first part of this aesthetic veneer workflow, dental technician Roberto Rossi demonstrates how to apply internal stains to KATANA™ Zirconia YML. This crucial step enhances the restoration by adding depth, translucency, and natural character from within.

After refining the anatomy and surface texture, Roberto skillfully blends and applies selected shades such as A+, Fluoro, and Incisal Blue. These shades create depth, opalescence, and inner vitality that radiate through the final restoration.

A must-watch for dental technicians looking to elevate their zirconia restorations with advanced, yet straightforward, internal staining techniques.

EUROPEAN KOLS EXPERIENCE INNOVATION AND CRAFTSMANSHIP IN JAPAN

This September, seventeen of Kuraray Noritake Dental’s Key Opinion Leaders (KOLs) from across Europe—representing nine countries—embarked on a remarkable journey to Japan. The program offered a rare opportunity to experience the heart of Kuraray Noritake Dental’s culture of innovation, craftsmanship, and collaboration.

A JOURNEY OF INSIGHT AND INSPIRATION

The tour began in Tokyo, where the group traveled by bullet train to Nagoya to explore some of Japan’s cultural and professional landmarks. Visits to Nagoya Castle and the historic Noritake Garden provided glimpses into the artistry and heritage that continue to inspire our company’s ceramic technologies today.

Nagoya castle.

That evening, an official dinner in Nagoya brought together the European guests and key members of the Kuraray Noritake Dental team, including Ms. Kiyoko Ban, Mr. Yoshihisa Yamada, and Mr. Kazuhiro Yamada. It was an evening filled with rich conversations, meaningful connections, and a shared vision for the future of dental excellence.

FROM CONCEPT TO CREATION: VISITING THE MIYOSHI AND NIIGATA FACTORIES

The following day, the KOLs visited the Miyoshi Factory, where the company’s ceramic products such as KATANA™ Zirconia are manufactured, and  attended insightful presentations by their European peers — including Jorgen Gad, Sophie Dallem, Dumitru Leahu, Marios Georgoulis, Stratos Chatzichristos, and Kamila Krzepkowska — followed by a comprehensive factory tour and in-depth discussions  with R&D experts on zirconia and dental lab materials, providing unique professional insights.

Discussion with Kuraray Noritake Dental team at Miyoshi Factory.

Presentation given by DT Sophie Dallem and DT Dumitru Leahu at Miyoshi Factory.

Presentation given by DT Marios Georgoulis at Miyoshi Factory.

The tour also brought our KOLs to Niigata, where participants experienced firsthand the research and development process behind Kuraray Noritake Dental’s renowned products. A highlight was the hands-on demonstration of CLEARFIL MAJESTY™ ES Flow Universal, allowing each participant to engage directly with the materials and processes that define the company’s quality.

Hands-on course at Niigata plant.

CONNECTING THROUGH COLLABORATION

Between technical sessions, the group visited the Tokyo office and showroom, sharing open discussions with our Japanese colleagues at the headquarters, followed by a sightseeing tour through Tokyo’s landmarks — from the Imperial Palace to Tokyo Tower. These shared experiences strengthened the sense of partnership and mutual respect not only between the European and Japanese teams but also between the KOLs themselves and the company.

“It was an incredible experience meeting exceptional people worldwide, among them top specialists.” 
—    DT Kamila Krezpkowska, Poland

Discussion with Kuraray Noritake Dental team at the Tokyo headquarters.

WORDS FROM OUR KOLS

The feedback from participants was overwhelmingly positive:

“It was truly a lifetime experience — both inspiring and invaluable for me as a dental technician. Witnessing how the materials we use every day are created gave me an even deeper appreciation for the craft behind them.”
— DT Marios Georgoulis, Greece

“I’m so impressed by the organization, the endless friendliness, the openness, and the willingness to answer all my questions. It was a wonderful time, filled with so many experiences.” 
— Dr. Bernhild Stamnitz, Germany

“It was a life experience I will never forget and I am very grateful I got this opportunity to be there.[…] The drive and compassion of all the workers in office, but also at the factory were very impressive to see. The view I had about the quality of your product improved more than it already was.” 
—  Dr. Mark Laske, Netherlands

A SHARED COMMITMENT TO EXCELLENCE

The KOL Japan Tour 2025 was more than a professional visit—it was a bridge between continents, uniting people through shared values of precision, innovation, and artistry. Kuraray Noritake Dental extends heartfelt thanks to all participants and to the teams in Japan who made this unforgettable experience possible.

Group picture at the Kuraray Noritake Dental office in Tokyo.

Arigato!

Gadījums no dr. Žiljēna Molias (Julien Molia)

JĀ, TAS DARBOJAS!

Daudzu zobārstniecības speciālistu prātos ir stingri nostiprinājies uzskats, ka plūstošie kompozīti ir piemēroti oderēšanai vai izmantojami kā bāzes materiāls zem izturīgākiem biezajiem kompozītiem un netiešajām restaurācijām, vai kā materiāls pagaidu risinājumiem. Tomēr daudzi zobārsti pieņem, ka šo materiālu pielietojums ir ierobežots to slikto mehānisko raksturlielumu dēļ.

JAUNA PLŪSTOŠO KOMPOZĪTU PAAUDZE

Par laimi, tas vairs neatbilst patiesībai: vairākiem jaunākās paaudzes plūstošajiem kompozītiem, piemēram, CLEARFIL MAJESTY™ ES Flow un CLEARFIL MAJESTY™ ES Flow Universal (abi Kuraray Noritake Dental Inc.), piemīt mehāniskās īpašības, kas ir līdzvērtīgas daudzu neplūstošo alternatīvu īpašībām. Attiecīgi to pielietojuma diapazons ievērojami paplašinās. Piemēram, saskaņā ar ražotāja datiem, CLEARFIL MAJESTY™ ES Flow Universal ir augsts 75 līdz 78 wt/% pildvielas saturs, vairāk nekā 150 MPa lieces izturība, kā arī spiedes izturība, kas pārsniedz 370 MPa. Pateicoties materiāla augstajai izturībai, tas kalpo kā uzticams un pastāvīgs risinājums, kas ir piemērots izmantošanai pat augstas slodzes zonās, piemēram, uz aizmugurējo zobu okluzālajām virsmām.

Tomēr šis plūstošais kompozīts spēj piedāvāt vēl vairāk: tas ir pieejams divās plūstamības versijās, Low un Super Low, tādējādi pielāgojoties plašākam personīgo vēlmju klāstam un individuālo indikāciju specifiskajām vajadzībām, un tikai divos toņos (Universal un Universal Dark). Pēdējais no tiem piedāvā intuitīvas toņa piemeklēšanas priekšrocību pat priekšējo zobu zonā, kas iespējama, pateicoties toņu saskaņošanas tehnoloģiju, tostarp gaismas izkliedes tehnoloģijas, apvienojumam ar emaljai pielīdzinātu materiāla caurspīdību.

Tālāk aprakstītais piemērs parāda, kā CLEARFIL MAJESTY™ ES Flow Universal atvieglo manu dzīvi, veicot aizmugurējo zobu restaurācijas procedūras.

KLĪNISKĀ GADĪJUMA PIEMĒRS

Šim pacientam bija nepieciešama divu amalgamas restaurāciju aizvietošana apakšžokļa labās puses molāros (46. un 47. zoba virsma saskaņā ar FDI apzīmējumu sistēmu) (1. att.). Tā kā tas atvieglotu aizpildīšanu un nodrošinātu lielisku pielāgošanos kavitātes sienām, CLEARFIL MAJESTY™ ES Flow Universal Low tika izvēlēts par vienīgo materiālu restaurācijas veikšanai. Restaurējamo zobo novietojums atviegloja toņa izvēli: tonis U (Universal) ir ideāli piemērots visām aizmugurējo zobu restaurācijām.

Amalgamas restaurācijas materiāls un kariesa skartie audi tika izņemti, vienlaikus maksimāli saglabājot veselīgos zoba audus (2. un 3. att.). Procedūrai tika izvēlēta selektīvās kodināšanas metode, pēc kuras tika uzklāts universālais adhezīvs (CLEARFIL™ Universal Bond Quick 2, Kuraray Noritake Dental Inc.). Pēc tam kavitātēs tika ieklāts Low plūstamības versijas CLEARFIL MAJESTY™ ES Flow Universal kompozīts izvēlētajā U tonī (4. att.). Pateicoties inovatīvajai šļirces konstrukcijai, iestrādātajā plūstošajā kompozītā faktiski nav gaisa burbuļu. Saskaņā ar produkta lietošanas instrukcijām katra materiāla slāņa biezums nepārsniedza 2 milimetrus, lai nodrošinātu pilnīgu sacietēšanu (5. un 6. att.), kam ir izšķiroša ietekme uz pabeigtās restaurācijas veiktspēju ilgtermiņā. Pirms nākamā slāņa uzklāšanas katram slānim veicama rūpīga cietināšana 10–20 sekunžu garumā (atkarībā no izmantojamās polimerizācijas lampas). Kā parādīts 7. attēlā, izvēlētā materiāla zemā plūstamība ļauj veikt okluzālās virsmas morfoloģijas modelēšanu. Ja nepieciešama plašāka anatomiski precīzu elementu restaurācija, šim nolūkam laba izvēle būs stabilākā SUPER Low versija. Pabeigtās restaurācijas nopulēšana līdz augsta līmeņa spīdumam aizņēma vien dažas sekundes (8. att.).

1. att. Divas amalgamas restaurācijas, kuras nepieciešams aizvietot.

2. att. Situācija pēc esošo amalgamas restaurāciju izņemšanas.

3. att. Lielākās kavitātes apakšdaļā ir redzams amalgamas restaurācijām raksturīgais zoba tonējums.

4. att. Aizpildīšanas procedūra: pirmā plūstošā kompozīta slāņa uzklāšana.

5. att. Otrais molārs aizpildīts, pirmajam molāram nepieciešams papildu plūstošā kompozīta slānis.

6. att. Aizpildīšana pabeigta.

7. att. Laba virsmas morfoloģija un toņa saskaņotība.

8. att. Ārstēšanas rezultāts pēc koferdama noņemšanas. Restaurētās zonas labi saplūst ar apkārtējo zobu kopumu – gan toņa, gan virsmas spīduma ziņā.

VIEGLI LIETOJAMA BIEZO KOMPOZĪTU ALTERNATĪVA

Plūstošais kompozīts ar labi sabalansētām mehāniskajām īpašībām var kļūt par lielisku biezo kompozītu alternatīvu, it īpaši grūti sasniedzamās mutes dobuma zonās. Uzlabotas atbilstoša toņa piemeklēšanas iespējas, uzklāšana praktiski bez gaisa burbuļiem, vienkārša pielāgošana un modelēšana, kā arī ātra pulēšana patiesi atvieglo zobārsta ikdienu.

Dentist:

JULIEN MOLIA

Dr. Žiljēns Molia absolvēja medicīnas studijas 2008. gadā, izstrādājot zinātnisko darbu datorizētajā implantoloģijā. Viņš atvēra savu vispārējās zobārstniecības praksi Senžandelīzā (Saint-Jean-de-Luz), kur kopš tā laika intensīvi darbojas implantu ķirurģijas un žokļa kaula rekonstrukcijas jomā. 2017. gadā viņš ieguva otru akadēmisko grādu implantoloģijā, lai atjaunotu un padziļinātu savas zināšanas nozarē. Viņš ir arī papildinājis savas zināšanas un prasmes digitālajā zobārstniecībā, darbā ar ortodontiskajām miniskrūvēm un mukogingivālajā ķirurģijā. Apņēmies sniegt savu ieguldījumu maksimālā veselo audu saglabāšanā, viņš ir privāti mācījies pie dr. Žila Tirlē (Gil Tirlet) un dr. Žana Pjēra Attāla (Jean-Pierre Attal) Parīzē. Dr. Molia ir viens no French Southwest BioTeam, klīniskās pētniecības un inovāciju sadarbības grupas, dibinātājiem.

Mūsdienu zobārstniecības praksē ir nepieciešami materiāli, kas apvieno ērtu lietošanu un procedūras efektivitāti ar estētiskiem, ilgmūžīgiem rezultātiem. Šādi materiāli ļauj zobārstiem daudz efektīvāk sasniegt vēlamos rezultātus, sniedzot viņiem iespēju veltīt vairāk laika personiskai mijiedarbībai ar pacientiem.

Tiešās restaurācijas ārstēšanas kontekstā izvēlētajam sveķu kompozītam ir ievērojama ietekme uz procedūru vienkāršību un galarezultātu kvalitāti: šī iemesla dēļ universālie pastveida kompozīti, piemēram, CLEARFIL™ MAJESTY ES-2 Universal (Kuraray Noritake Dental Inc.), kļūst arvien populārāki. Ar CLEARFIL™ MAJESTY ES Flow Universal, šis pats uzņēmums tagad ir ieviesis savā produktu klāstā plūstošo kompozītu, kas piedāvā līdzvērtīgas priekšrocības, kas apkopotas tālāk, atbildot uz jūsu galvenajiem jautājumiem.

Kā sasniegt estētiskus un ilgmūžīgus restaurācijas rezultātus ar plūstoša materiāla nodrošināto vienkāršību?

CLEARFIL™ MAJESTY ES Flow Universal ir plūstošs risinājums divos savstarpēji papildinošos toņos intuitīvai toņa piemeklēšanai, kas piemērots plašam restaurācijas procedūru klāstam. Tas apvieno praktiskas plūstamības īpašības ar uzlabotu krāsu pielāgošanas spēju un izcilām mehāniskajām īpašībām.characteristics with advanced shade-blending ability and outstanding mechanical properties.

Low

• Lieces izturība: 151 MPa.
• Spiedes izturība: 373 MPa.
• Pildvielas saturs: 75 wt/% / 59 vol%.
• Rentgena necaurlaidība: 140% Al.

Super Low

• Lieces izturība: 152 MPa.
• Spiedes izturība: 374 MPa
• Pildvielas saturs: 78 wt/% / 60 vol%.
• Rentgena necaurlaidība: 150% Al.

Kas ir CLEARFIL™ MAJESTY ES Flow Universal?

CLEARFIL™ MAJESTY ES Flow Universal ir ar gaismu cietināmi, rentgena necaurlaidīgi kompozītsveķi, kas izstrādāti plašam klīnisko situāciju klāstam, pieejami divās viskozitātes versijās un 2 toņos. Šis materiāls ir papildināts ar nano pildvielu tehnoloģiju, kas nodrošina kontrolētu plūsmu, ilgstošu pulējuma spīdumu un dabiska izskata restaurācijas. Nevainojama kompozīta iekļaušanās apkārtējā zoba struktūrā tiek panākta, piešķirot tam emaljai pielīdzinātas caurspīdības, dentīna iedvesmotas krāsu gammas un unikālas Light-Diffusion Technology (LDT) gaismas izkliedes tehnoloģijas kombināciju. Emaljai pielīdzinātā caurspīdība ļauj gaismai plūst cauri materiālam, uzlabojot krāsas integrēšanos apkārtējā zoba struktūrā. LDT tehnoloģija ļauj restaurētajai zonai izkliedēt gaismu līdzīgā veidā, kā tas notiek, gaismai plūstot caur emalju un dentīnu. Apvienojumā ar rūpīgi piemeklētu krāsu gammu, šie raksturlielumi veicina vienmērīgu materiāla integrēšanos apkārtējā zoba struktūrā.

Kādos gadījumos iespējams izmantot CLEARFIL™ MAJESTY ES Flow Universal?

Šis plūstošais kompozīts ir paredzēts plašam restaurācijas procedūru klāstam. Sākot ar I–V klases restaurācijām un beidzot ar iedobumu un fisūru noslēgšanu un labošanu – šis materiāls ir izstrādāts izmantošanai gan konservatīvas, gan visaptverošas ārstēšanas plānos.

CLEARFIL™ MAJESTY ES Flow Universal ir piemērots izmantošanai dažādos gadījumos:

• tiešās restaurācijas visās kavitāšu klasēs: zoba kakliņa bojājumi (piemēram, saknes virsmas kariess, ķīļveida bojājumi), zobu nodilums un zobu erozija;
• kavitāšu nosegšana/oderēšana;
• zoba pozīcijas un formas koriģēšana (piem. diastēmas slēgšana, zoba malformācija);
• intraorāla atlūzušu restaurāciju labošana.

Kā tiek veikta toņa piemeklēšana?

Izmantojot CLEARFIL MAJESTY™ ES Flow Universal, toņa izvēle ir ārkārtīgi vienkārša. Divi savstarpēji papildinošie toņi, Universal (U) un Universal dark (UD), ir intuitīvi atlasāmi – nav nepieciešams izmantot toņu skalu. Tonis U ir piemērots praktiski visām priekšējo un aizmugurējo zobu restaurācijām. Tonis UD ir vislabāk piemērots tumšāka toņa zobiem (B3 un augstāk) ar mazu apkārtējā zoba struktūras apjomu, tostarp III un IV klases kavitātēm. Izvēlieties vispiemērotāko toni atbilstoši apstrādājamās kavitātes klasei un pacienta vecumam.

Krāsas piemeklēšana priekšējo un aizmugurējo zobu restaurācijām.

Kas ietekmē CLEARFIL™ MAJESTY ES Flow Universal veiktspēju?

Materiāla formulai ir papildināta ar vairākiem elementiem, kas nodrošina tā klīnisko efektivitāti.

• Nano pildvielu tehnoloģija: uztur optimālu pildvielu saturu, lai nodrošinātu noturību pret saraušanos, uzlabotu nodilumizturību un ilgstošu pulējuma spīdumu.
• Universāla toņa pielāgošana: nodrošina labu vizuālo integrāciju apkārtējā zoba struktūrā, veicinot racionalizētu toņa atlasīšanu.
• Tiksotropas īpašības: materiāls ir plūstošs, izdarot uz to spiedienu uzklāšanas laikā, taču saglabā stabilitāti pēc iestrādes, tādējādi nodrošinot precīzu uzklāšanu.

Kādēļ apsvērt CLEARFIL™ MAJESTY ES Flow Universal izmantošanu?

Medicīnas speciālisti var novērtēt CLEARFIL™ MAJESTY ES Flow Universal priekšrocības, pateicoties materiāla:

• paredzamajam lietojumam un rezultātiem;
• estētiskajam rezultātam gan priekšējo, gan aizmugurējo zobu restaurācijās;
• nodilumizturībai un noturībai pret virsmas bojājumiem;
• rentgena necaurlaidībai, kas nodrošina rentgenogrāfiskās novērtēšanas iespēju;
• atbilstībai dažādu restaurācijas vajadzību prasībām.

Kā uzklāt CLEARFIL™ MAJESTY ES Flow Universal?

Materiāla uzklāšana ir vienkārša un iekļaujas standarta klīniskajās darbplūsmās.

1. Pēc nepieciešamības sagatavojiet un izolējiet apstrādājamo virsmu.
2. Uzklājiet saderīgu adhezīvu (piem., CLEARFIL™ Universal Bond Quick 2).
3. Uzklājiet materiālu, izmantojot šļirci un aplikatoru ar smalku uzgali.
4. Veiciet cietināšanu ar gaismu saskaņā ar ražotāja norādījumiem (tipiski 20 sekundes, atkarībā no toņa un izmantotās polimerizācijas lampas).
5. Veiciet gala apstrādi un pulēšanu, lai pabeigtu restaurācijas procedūru.

Šļirces tipa iepakojums ir ērts izmantošanā un ļauj veikt kontrolētu materiāla uzklāšanu

Tiešā restaurācija ar CLEARFIL MAJESTY™ ES Flow Universal.

Vai CLEARFIL™ MAJESTY ES Flow Universal ir saņēmis neatkarīgu avotu novērtējumu?

Jā! Zobārstniecības profesionāļi ir veikuši CLEARFIL™ MAJESTY ES Flow Universal (Super Low) novērtējumu, veicot trešo personu testēšanu un izmantojot salīdzinošo pārskatīšanu. Nesen šim materiālam tika piešķirta Dental Advisor 2025. gada pētniecības balva. Novērtējuma kopsavilkumā šī ASV bāzētā izdevuma vērtētāji norādīja:

“Testi liecina, ka šim kompozītam ir vienas no augstākajām fizikālajām īpašībām plūstošo kompozītu nozarē, kas konkurē ar izturīgākajiem biezajiem kompozītiem lieces un spiedes izturības ziņā, turklāt nodrošinot arī nevainojamu rentgena necaurlaidību.”

Daudzpusīgs plūstošs risinājums: CLEARFIL™ MAJESTY ES Flow Universal

CLEARFIL™ MAJESTY ES Flow Universal ir paredzēts restaurācijas procedūru atbalstam, nodrošinot kontrolētu lietojumu, estētisku integrāciju un mehānisku izturību. Tā var būt praktiska izvēle medicīnas speciālistiem, kas meklē uzticamu plūstošo sveķu materiālu plašam klīnisko scenāriju klāstam.

Lasīt vairāk >

Universal Excellence – viedi racionalizēti risinājumi

Kuraray Noritake Dental Inc. lieliski izprot mūsdienīgas zobārstniecības prakses vajadzības. Sarežģītu procedūru, intensīvu darba grafiku un pacientu vajadzību līdzsvarošana nav viegli izpildāms uzdevums. Tieši tādēļ mēs jau gadu desmitiem neatlaidīgi cenšamies racionalizēt, uzlabot un pilnveidot katru jūsu darba soli. Mūsu vīzija ir skaidra: pasaule, kurā materiāli un instrumenti jūsu rokās darbojas nevainojami, kur sarežģītība ir samazināta līdz minimumam un kur jums tiek dots pietiekami ilgs laiks, lai koncentrētos uz vissvarīgāko – ikviena pacienta individuālajām vēlmēm un vajadzībām. Tā ir zobārstniecības nākotne un kopā mēs varam to sasniegt.

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CLEARFIL MAJESTY™ ES Flow Universal SAŅEM PĒTNIECĪBAS BALVU

Uzņēmums Kuraray Noritake Dental Inc. nesen prezentēja jaunu produktu – plūstošo kompozītu ar vienkāršotu toņu koncepciju: CLEARFIL MAJESTY™ ES Flow Universal. Kā vēstīts publikācijā, kas lasāma ASV žurnāla Dental Advisor 2025. gada janvāra/februāra numurā, šis jaunais produkts ir ieguvis prestižu pētniecības balvu par pārliecinošiem in vitro rezultātiem.

ĪSUMĀ PAR PRODUKTA ĪPAŠĪBĀM

Eiropas tirgū CLEARFIL MAJESTY™ ES Flow Universal tiek piedāvāts divās dažādās viskozitātes versijās – Low un Super Low, savukārt Amerikas Savienotajās Valstīs ir pieejama Super Low versija. Lai atvieglotu piemērotākā toņa piemeklēšanas procedūru, šis materiāls ir izstrādāts, piešķirot tam emaljai pielīdzinātas caurspīdības, dentīna iedvesmotas krāsu gammas un unikālas Light-Diffusion Technology (LDT) gaismas izkliedes tehnoloģijas kombināciju. Tādējādi tiek nodrošinātas izcilas toņu saskaņošanas iespējas, ļaujot izmantot minimālu toņu klāstu, kurā ietverti tikai divi savstarpēji papildinoši toņi – Universal (U) un Universal Dark (UD). Pēc sacietēšanas materiāls dabiski saplūst ar apkārtējo zoba struktūru.

 
Papildus intuitīvai toņa izvēlei, plūstošajam kompozītam piemīt vēl kāda ievērojama priekšrocība: tā ārkārtīgi augstā izturība. Ar 152 MPa lieces izturību un 374 MPa spiedes izturību, CLEARFIL MAJESTY™ ES Flow Universal (Super Low) ir tikpat izturīgs kā daudzi pastveida kompozīti. Attiecīgi tas ir piemērots izmantošanai pat augstai slodzei pakļautās zonās un tiek ieteikts šādiem lietojumiem:

• tiešās restaurācijas visās kavitāšu klasēs: zoba kakliņa bojājumi (piemēram, saknes virsmas kariess, ķīļveida bojājumi), zobu nodilums un zobu erozija.
• Kavitāšu nosegšana/oderēšana
• Zoba pozīcijas un formas koriģēšana (piem. diastēmas slēgšana, zoba malformācija)
• Intraorāla atlūzušu restaurāciju labošana
• Keramisko un kompozīta inleju, onleju un venīru cementēšana (biezums: līdz 2 mm)

IZCILI IN VITRO RĀDĪTĀJI

Super Low īpaši zemas plūstamības versija, kas pieejama ASV, tika testēta Dental Advisor biomateriālu pētniecības centrā, un salīdzināta ar diviem citiem plūstošajiem kompozītiem. Testa laikā tika izvērtētas šādas materiālu īpašības: lieces izturība, elastības modulis, izturība pret lūzumiem, spiedes izturība, kā arī rentgena necaurlaidība. Turklāt pētnieki veica arī materiālu krāsu atbilstības spēju novērtējumu V klases kavitāšu atjaunošanas kontekstā A1, B2, C3 un D4 toņa protēžu zobos. Visbeidzot tika pārbaudīta arī rentgena necaurlaidība un plūstamības īpašības.

 
CLEARFIL MAJESTY™ ES Flow Universal uzrādīja lielisku sniegumu visos aspektos. Tā fizikālās īpašības uzrāda vienu no visaugstākajiem rezultātiem plūstošo kompozītu kategorijā un ir līdzvērtīgā līmenī, salīdzinot ar pastveida alternatīvām. Materiāla rentgena necaurlaidība tika atzīta par nevainojamu, tāpat kā viskozitāte, kas ļauj materiālam pēc uzklāšanas saglabāt sākotnējo formu. Un, neskatoties uz to, ka klāstā ir pieejami vien divi toņi, pētnieki apliecināja, ka CLEARFIL MAJESTY™ ES Flow Universal atbilst plašam dabīgo zobu toņu diapazonam.

PAR DENTAL ADVISOR

ASV bāzētās organizācijas Dental Advisor apbalvojumi Top Product (labākais produkts) un Preferred Product (vēlamais produkts) tika iedibināti, lai palīdzētu aizņemtiem praktiķiem orientēties plašajā jauno pieejamo zobārstniecības risinājumu klāstā, jo īpaši mazāk invazīvo metožu un standartizēto procedūru jomā. Šie apbalvojumi palīdz identificēt produktus, kas nodrošina pastāvīgu rezultātu uzlabošanu. Dental Advisor veic klīniskos novērtējumus un produktu veiktspējas testus neilgi pēc produktu ieviešanas tirgū un tiešsaistē publicē ikgadējos rezultātus, ļaujot praktiķiem vieglāk identificēt augstas kvalitātes zobārstniecības materiālus, kas atbilst viņu īpašajām vajadzībām. Pētniecības balva tika iedibināta, lai godinātu tos zobārstniecības produktu ražotājus, kas sniedz pastāvīgu ieguldījumu zobārstniecības materiālu izpētē, attīstīšanā un uzlabošanā, lai panāktu augstāku ārstēšanas kvalitāti.

Lai skatītu plašāku informāciju, apmeklējiet Dental Advisor tīmekļa vietni: www.dentaladvisor.com

PANAVIA™ Veneer LC WINS PREFERRED PRODUCT AND RESEARCH AWARDS

PANAVIA™ Veneer LC has been singled out for a Research Award in the category Research – Veneer Cement by Dental Advisor and for a Preferred Product Award in the category Cement: Esthetic Resin. Published in the January/February 2025 issue of the US-based organisation, the annual Top Product, Preferred Product or Research Awards are given to those materials and devices deemed by the publication’s consultants to deliver the best practice-based or lab-based performance in their categories.

BENEFITS IN A NUTSHELL

PANAVIA™ Veneer LC is a specialized veneer cement designed to provide exceptional bond strength to various substrates, along with outstanding gloss retention and wear resistance. The resin cement utilizes smaller-diameter spherical filler particles, facilitating easy dispensing from the syringe and excellent flowability for minimal film thickness. All of these attributes contribute to virtually no change in gloss or surface appearance of veneer margins over time.

EXCELLENT PROPERTIES IN VITRO

To assess the scientific performance of PANAVIA™ Veneer LC, its features and physical properties, specifically its bond strength to various substrates after artificial aging and its wear resistance, were tested in the Dental Advisor Biomaterials Research Center. The investigators’ testing of these attributes reflects the challenges such products must meet – “Ideally, esthetic veneer cements should have a long working time, curing on demand, excellent color stability, and high strength”.

To assess bond strength to dentin, enamel, IPS e.max CAD, and zirconia, the cements were subjected to six months of artificial aging using thermocycling. To test wear resistance after toothbrush abrasion, the testing method involved measuring depth of wear, change in surface roughness, and change in gloss based on a simulation of about 5.5 years of regular toothbrush use.

The investigators reported that PANAVIA™ Veneer LC “had the best gloss retention of the three cements tested and a very even wear pattern,” noting further that “having limited surface roughness after toothbrush abrasion can help lower staining and bacterial adhesion.” Overall, they said, “The PANAVIA™ Veneer LC cement system showed excellent adhesion properties and exceptional gloss retention and wear resistance,” concluding:

OUTSTANDING RATING OF 96 PERCENT

In addition, the product was tested in the clinical setting. 25 clinical evaluators used PANAVIA™ Veneer LC cement system in their dental offices. After a total of 166 uses, the light-curing resin cement received “excellent” to “very good” ratings with regard to completeness of the kit, the shade of the try-in pastes, ease of clean-up of the try-in pastes and excess cement, viscosity, working time and lack of shade shift after curing.

The evaluator’s clinical tips included:

• „Use a micro brush or rubber tip to clean up excess cement before curing.”
• „Apply glycerin gel to the margins after placing the veneer with the cement to eliminate the oxygen inhibition layer and ensure a complete cure before light curing through the gel.”

In their comments, they praised the ease of use of the system, the design of the syringes, the shade options and shade match between try-in and cement shades, e.g.:

• “The white shade of the cement was opaque enough for efficient masking of discolored tooth structure.”
• “Great esthetics, very easy to use, complete system.”

This resulted in an overall clinical rating of 96 percent and an equally high recommendation rate.

ABOUT DENTAL ADVISOR

The Top Product and Preferred Product Awards from Dental Advisor, a US-based organization, were initiated to help busy practitioners navigate the variety of new dental solutions available, particularly for less invasive techniques and standardized procedures. These awards aim to identify products that improve outcomes consistently. Dental Advisor conducts clinical evaluations and product performance tests shortly after a product’s launch and publishes annual results online to help practitioners identify high-quality dental materials suited to their specific needs. Research Awards were initiated to honour those manufacturers of dental products with an ongoing commitment to research, development and advancement of dental materials to enhance treatment quality.

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

Interview with the team at Kuraray Noritake Dental Inc., who developed and brought to life this new universal adhesive.

Streamlining, enhancing and refining adhesive procedures – these are the aims of an 5-person team at Kuraray Noritake Dental Inc. in Japan. Recently, the team has developed a next-generation universal adhesive CLEARFIL™ Universal Bond Quick 2 that offers quick and easy application combined with an optimised bonding performance. To learn more about the goals and achievements of the development project, and the benefits of the product, we had a conversation with them.

From left to right: Ryo Matsuura and Ryota Murayama (R&D Department), Kazutoshi Ikeda (Production Department), Marina Okada and Yamato Nojiri (Planning & Development Department).

Why did you decide to improve CLEARFIL™ Universal Bond Quick?

Universal adhesives like CLEARFIL™ Universal Bond Quick are very well received by dental practitioners all over the world mainly due to their versatility and procedural simplicity. In the clinical setting, however, we have identified room for improvement. For example, it can be difficult to establish thin, uniform and strong bonding layers with the currently available products. Water and solvents in universal adhesives often limit the formation of a strong bond layer. A thin bonding layer and the relatively thick oxygen inhibition layer make this type of bonding agent susceptible to degradation by water sorption from dentinal moisture. Highly viscous bonding agents also complicate the ease of application in small cavities and can easily lead to pooling of the adhesive in critical parts of the cavity. Adhesives with a relatively high viscosity may pool or accumulate along margins, and may form a layer that is too thick and may change the morphology of the abutment tooth, a critical factor potentially affecting the fit of an indirect restoration. Generally, bonding agents with a low film thickness and/or are low-filled or unfilled, in turn have a potentially negative effect on the strength of the bonding layer. At Kuraray Noritake Dental Inc., we wanted to address the aforementioned issues and have developed a universal adhesive that is easy to apply and facilitates the establishing of thin, uniform bonding layers exhibiting high strength.

What are the indications of CLEARFIL™ Universal Bond Quick 2?

The new universal adhesive is indicated for bonding procedures in the context of creating direct restorations with light-cured composite, sealing of a prepared cavity or abutment tooth as a pretreatment for indirect restorations, treatment of exposed root surfaces and hypersensitive teeth, and also the intraoral repair of fractured restorations. Furthermore, the product is a suitable adhesive in post-cementation and core build-up procedures as well as in adhesive cementing of indirect restorations. When used in the context of the cementing of indirect restorations, the bonding to tooth structure of PANAVIA™ SA Cement Universal and of other manufacturers’ self-adhesive resin cements improves, leading to higher bond strengths.

What are the corresponding general benefits of CLEARFIL™ Universal Bond Quick AND CLEARFIL™ Universal Bond Quick 2?

The general benefits of both products are that they may be used with any etching procedure, plus the fact that there is no need to wait for the adhesive to penetrate the tooth structure after application. In addition, both products contain the original MDP monomer and the amide monomer, responsible for the formation of a thin and strong surface coating. Both products exhibit low technique sensitivity and are suitable for a wide range of indications. Finally, the adhesive monomers and fluoride offer extra protection to the underlying dentin.

Monomer image from the brochure

You mentioned the original MDP monomer as one of the essential components of the new adhesive and its predecessor. Is there a difference between this original MDP monomer and other MDP monomers available on the market?

Our MDP monomer is the only MDP monomer that is manufactured using the originally developed synthesis and purification process. Research has shown that the way MDP is manufactured has indeed an impact on the performance of the monomer itself1. While impurities and dimers detected in MDP monomers synthesized elsewhere negatively affected the immediate and aged micro-tensile bond strength in the in-vitro study, our MDP monomer shows high purity and more favourable test results.

Most universal adhesives need to be rubbed into the tooth structure extensively for 10 to 20 seconds. What did you do to eliminate the waiting time independent of the etching procedure, which led to an ultra-quick application procedure?

It is the amide monomer which is mainly responsible for an improved penetration speed into the tooth structure. The hydrophilicity of this monomer is much higher than the hydrophilicity of the HEMA monomer that is typically used. This provides for a better penetration into the moist dentin. The amide monomer’s polymerisation characteristics are better, and, following polymerisation, leads to higher stability in a wet environment due to the formation of a highly cross-linked polymer network. In combination with MDP, an efficient long-term performance will likely be achieved. For optimal outcomes, the adhesive is simply rubbed into the tooth structure as described in the IFU: “Apply BOND with a rubbing motion to the entire cavity wall with the applicator brush. No waiting time is required.”

What are the additional benefits that CLEARFIL™ Universal Bond Quick 2 has to offer?

First of all, we improved the viscosity and film thickness by optimizing the manufacturing method. The thin adhesive layer prevents pooling in the cavity, around abutments and along margins, creating a uniform bonding layer. Simply put, the new adhesive is applied thinly and spreads evenly. At the same time, the product offers high mechanical strength and excellent resistance to water sorption. Its bond strength is high in all etching modes and the new formulation allows for the product to be stored at room temperature.

Please explain the clinical benefit of an improved mechanical strength.

The risk of decreasing the film thickness lies in a possible decrease in the strength of the bonding layer which can lead to reduced bond durability. By introducing a new multifunctional urethane methacrylate monomer, we have been able to increase the strength. The effective advantage of the new bonding agent is that it can easily be used in small, difficult-to-access cavities or in cavities with complex morphology. The result is a thin yet strong adhesive layer that also allows for easy placement of any type of restoration.

How did you manage to improve the storage conditions?

Component stability was not an issue with CLEARFIL™ Universal Bond Quick. However, for a stable viscosity, it needed low-temperature storage. By optimizing the manufacturing method and decreasing the viscosity of CLEARFIL™ Universal Bond Quick 2, storage at room temperature became possible.

Was it difficult to integrate the new components and keep the existing benefits? How did you manage?

Integrating new components and removing others always means that the whole formulation needs to be rebalanced properly. This was particularly challenging for the multifunctional urethane methacrylate monomer we wanted to add. It improves the strength and hardness of the universal adhesive, but may affect adhesion depending on the amount of the compound in the formulation. Consequently, we needed to carefully find optimal balance, which took some time and required thorough testing, but in the end, we succeeded.

At the moment, the immediate dentin sealing technique is popular in indirect restoration procedures. What makes CLEARFIL™ Universal Bond Quick 2 suited for this technique?

Immediate dentin sealing is indeed a popular and useful technique that can result in significantly increased retention, reduced marginal leakage, improved bond strength, and less postoperative sensitivity. Using CLEARFIL™ Universal Bond Quick 2 in this context is beneficial as the procedure is quick, the resulting bonding layer is thin and strong, and the dentin is effectively protected.

Why should a dental practitioner switch to CLEARFIL™ Universal Bond Quick 2?

For users of CLEARFIL™ Universal Bond Quick, switching to CLEARFIL™ Universal Bond Quick 2 is worthwhile, as it offers additional advantages and improved performance while retaining the benefits of its predecessor. For users of other universal adhesives, the major benefit lies in the shortened application time: CLEARFIL™ Universal Bond Quick 2 is the only universal adhesive that can achieve a high bond strength and a high-strength bonding layer without any waiting time. In addition, it is suitable for a wide range of indications including core build-up procedures and cementation.

Thank you very much for these insights!

References
1. 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.

CERABIEN™ MiLai in Daily Use

A tooth with crack lines, a characteristic round shape, age-related changes, or medication-induced discoloration — there’s no one-size-fits-all solution when it comes to all-ceramic anterior restorations, even when the porcelain system and production technique are defined.

To support technicians who wish to simplify their layering workflow using the micro-layering technique and CERABIEN™ MiLai — whether just getting started or looking to refine their process — we’ve collaborated with DT Dumitru Leahu to create a Chroma Map Catalogue featuring seven typical anterior restoration scenarios.

Each case example includes a detailed screenshot of the framework design, chroma maps outlining the planned steps, images of internal staining and micro-layering procedures, and the final restoration on the model. You’ll also find essential information about the selected framework material, target shade, and other relevant details.

We invite you to use the CERABIEN™ MiLai Catalogue as a step-by-step guide to success or simply as inspiration for individual cases. It offers a fast track to understanding the material’s optical properties and will make planning your next micro-layering case more intuitive. No need to start from scratch — instead, adapt what’s already there and gradually develop your own maps and techniques.

Interested in the CERABIEN™ MiLai Chroma Map Catalogue?

Download it here!

Interview with Ghaith Alousi, DT

He inspires dental technicians with his passion and creativity as a course instructor, and with Nature Style, he has developed a well-conceived concept for the creation of lifelike anterior restorations. We are talking about Ghaith Alousi, a dental technician based in Wiesbaden, Germany. While course participants usually attend his training courses eager to learn from his experience and technical knowledge, they often return to their laboratories bursting with positive energy, truly inspired and deeply motivated to break new ground.

Ghaith Alousi, what is the dental technician’s primary mission?

In my eyes, dental technicians are not artists; rather, their primary mission is to replicate nature – both functionally and aesthetically. Every tooth, like every patient, is as unique as a fingerprint. To recreate a natural tooth as accurately as possible, we must listen, observe, and understand. To truly perceive the details that matter, however, we need to know where to focus our attention. In my opinion, the three golden keys to anterior aesthetics are paramount: balanced translucency and opacity, morphology, and surface texture.

What about colour?

While colour is undoubtedly a crucial aspect, I believe it is often overemphasized. Many dental technicians focused on aesthetic anterior restorations find themselves preoccupied solely with colour. However, natural teeth – the model we aim to replicate – embody far more than just a blend of hues.

First and foremost, we must understand how light interacts with teeth. They diffuse light in a unique manner, with different layers of enamel and dentin each possessing distinct optical properties. Additionally, the individual shape and surface texture of a tooth significantly affect the perceived attractiveness of a patient’s smile and overall facial appearance. Therefore, I have learned to prioritize these elements, observing nature closely and striving to comprehend what I see before embarking on the replication process.

Fig. 1. Light-optical properties of natural teeth imitated with KATANA™ Zirconia YML, Esthetic Colorant and CERABIEN™ ZR porcelain (Kuraray Noritake Dental Inc.).

Let’s take a brief look at each of the three golden keys, starting with the light-optical properties.

To truly grasp how light interacts with natural teeth, we must first examine their structure. Natural teeth consist of various layers, each displaying unique light-optical behaviours, with enamel and dentin being the most significant. Upon closely observing the dentin core of a tooth, we realize it is not only responsible for the tooth’s fundamental colour but also exhibits distinct opacity – it does not transmit light; instead, it reflects and absorbs it. In contrast, enamel presents a different scenario: its thickness varies with factors such as the patient’s age, but it is consistently highly translucent. This translucency allows a portion of light to pass through, with only a minimal amount reflected or absorbed.

Once we have a solid understanding of the natural light dynamics inherent in a patient’s teeth, the next step is to replicate these characteristics using selected materials. Thus, comprehending the light-optical properties of available materials, choosing them wisely, and applying them effectively are crucial milestones on the path to success.

What about morphology?

I firmly believe that mastering morphology – the replication of natural tooth shapes – can significantly impact a dental technician’s work. The growing popularity of carving workshops in Japan and other parts of the world reinforces this idea. Aspiring technicians avoid using standard dental libraries that produce generic smiles for their patients. Rather than traveling long distances to attend workshops and build our own mental library of tooth shapes, we can explore the intricacies of form and shape right in our dental laboratories through careful observation and consistent practice. Some technicians capture images of the teeth they encounter, while others concentrate on their own teeth or those of colleagues and patients. This approach allows for the replication of shapes using materials like wax or ceramics. By honing our observation and replication skills, we expand our personal knowledge base. This commitment to detail fosters true mastery – a continuous journey toward perfection.

Fig. 2. Example of a natural surface texture reproduced with CERABIEN™ MiLai and different diamond burs, stones and rubber polishers.

Is surface texture similarly important?

Absolutely. The surface texture of a restoration, even more than its hue, must precisely match that of surrounding or opposing teeth to achieve a natural appearance. To accomplish this, we must understand and replicate the intricate interplay of micro- and macrotextures that create a tooth’s natural look. Macrotexture encompasses the tooth’s overall surface characteristics, including varying concavities, convexities, line angles, and vertical V-shaped grooves. In contrast, microtexture focuses on finer details, such as growth lines (striae of Retzius), perikymata, small grooves, and the degree of surface gloss. A keen eye is essential to replicate every surface detail harmoniously so that light interacts optimally, creating reflections, shadows, and highlights exactly where they are needed.

Fig. 3. Large tooth created with CERABIEN™ ZR.

How do you practice?

To practice replicating surface texture and morphology, I typically start with enlarged model teeth, first using wax and later transitioning to my preferred dental materials and instruments. The increased size of the working base allows for easier detection, reproduction, and assessment of relevant morphology and surface details compared to original-sized tooth forms. This enlargement also facilitates the evaluation of light-optical properties. For the final assessment, I often apply silver or gold powder to the surface of the model tooth, which highlights even the finest surface nuances. This method makes it easy to identify areas that are well-executed and those that may need improvement.

Fig. 4. Gold powder applied to anterior restorations …

Once I achieve a high level of quality with the enlarged model teeth, I transfer the acquired skills to real-life applications by working with actual-sized teeth. This practice framework allows me to continuously enhance my basic skills. Moreover, each time I start working with a new instrument or material, this approach streamlines the initial learning curve, quickly elevating my performance to a high standard.

Fig. 5. … to evaluate their shape and surface texture.

What are your preferred material combinations for different indications / needs?

For cases with highest aesthetic demands, CERABIEN™ ZR (Kuraray Noritake Dental Inc.) is my favourite porcelain system. I This system can be utilized either as a standalone solution for producing veneers using the refractory die technique or in conjunction with a zirconia framework – typically crafted from KATANA™ Zirconia variants such as KATANA™ Zirconia UTML, STML, HTML Plus, or YML (also from Kuraray Noritake Dental Inc.) – in a full layering approach.

I frequently employ this combination to produce single crowns in the anterior region, selecting the framework material based on the colour of the underlying tooth structure and the appearance of adjacent teeth. An alternative approach is layering with CERABIEN™ MiLai, which consists of internal stains and porcelains compatible with zirconia and lithium disilicate. I prefer to combine this system with the previously mentioned zirconia variants or with lithium disilicate, predominantly using the porcelain to replicate enamel. Sometimes, I employ the system’s internal stains to enhance the result with natural colour effects.

Apart from observing closely, selecting appropriate materials and copying carefully, are there any additional factors decisive for great treatment outcomes from the technician’s point of view?

To my mind, there are two additional essential factors: Proper interaction and communication within the restorative team and personal interaction with the patient. Especially in the highest aesthetic demand cases, meeting a patient in person is very important. They are usually invited to visit the dental laboratory twice, prior to treatment planning and for try-in. Nothing can replace personal interaction with them and a genuine impression of the initial situation. After all, we need to give them a sense of security and build trust, while analysing their character, facial characteristics, skin colour and more allows us to produce perfectly matching restorations.

Fig. 6. Full layering approach with CERABIEN™ ZR on a KATANA™ Zirconia YML framework.

And the restorative team?

We share a common goal: to fulfil the desires of our patients. I firmly believe that achieving this requires a united effort from the entire team. Collaboration hinges on appreciative and open communication at all levels and demands absolute honesty. Furthermore, everyone involved must be committed to continuously developing their skills.

I hold high expectations not only for my own work but also for the contributions of each dentist in our team. After all, their work forms the foundation of what I do. For example, when a dentist invests in an intraoral scanner and starts providing digital records, it is my responsibility to verify whether the quality of those scans meets our high standards. If I notice that the quality could be improved, I approach the situation with respect, offering constructive feedback and guidance to help them deliver quality scans consistently. This is crucial, as high-quality scans are the prerequisite for creating outstanding restorations.

In my experience, most dental practitioners appreciate this kind of honest and supportive communication. It creates an environment where we can all grow and evolve together.

Do you have any additional comments?

Be authentic, strive for excellence, and approach each day as an exhilarating opportunity. Courage plays a vital role, too – the readiness to venture beyond your usual routines, such as experimenting with different shades to discover new possibilities, fosters growth. Even if the outcome does not meet your expectations, there is valuable insight to gain from the experience that can guide you in the future. To reach new horizons, be open to exploring uncharted paths.

Dentist:

GHAITH ALOUSI

Ghaith Alousi, born in 1994, successfully completed his training as a master dental technician in 2013 in Damascus, Syria, where he gained initial experience in a dental laboratory. From 2014 to 2016, he worked independently in Damascus, using his craftsmanship to produce ceramic work such as frameworks, veneers, crowns and bridges, and implant-based restorations. He also engaged in shade determination, photography, and CAD/CAM technology.

He came to Germany in 2016 and quickly felt at home. Through further education, he has continuously expanded his knowledge and skills and is currently working as a dental technician in Wiesbaden. To achieve the best possible results, Ghaith Alousi places great value on collaboration with dentists and personal contact with patients.

Seamless, streamlined cooperation between dentist and dental technician is a recipe for success. The KIZUNA Symposium (Japanese for “bond, connection between people”) explores precisely that. Here are five key reasons you shouldn’t miss it:

1  A UNIQUE EXPERIENCE

KIZUNA is more than an event – it is a philosophy of collaboration. It brings together dentists and dental technicians, creating a shared space for dialogue, learning, and inspiration. Different perspectives converge in one direction: effective and harmonious patient care. The symposium features joint sessions at the beginning and end of the day, with separate sessions for dentists and dental technicians in between.

2  EXCELLENT SPEAKERS

Moderated by the inspiring Dr. Agnieszka Pacyk, the symposium brings together 14 leading professionals from across Europe. Expect scientific excellence, state-of-the-art technologies, the power of AI, new approaches, and plenty of practical tips and tricks. Learn from the very best – for example, MDT Nondas Vlachopoulos and MDT Antonio Corradini, who will conclude the day with a two-hour lecture on excellence in dentistry through outstanding cooperation.

3  NEXT-LEVEL NETWORKING

On the evening before the KIZUNA Symposium, a unique social gathering will set the tone for the day ahead. Guests will enjoy an exclusive dinner featuring authentic Japanese cuisine, blending refined flavours with artistry and elegance. This special evening will not only delight your senses, but also create the perfect atmosphere for networking and informal conversations with colleagues, lecturers, and fellow participants from across Europe. To make the night even more memorable, special attractions inspired by Japanese culture will be offered.

4  SUPERB VENUE AND ACCOMMODATION POSSIBILITIES

The ICE Kraków Congress Centre is a modern and prestigious venue that will become the heart of the KIZUNA symposium. Located in the very center of Kraków, will provide an inspiring setting for dialogue, innovation, and the exchange of expertise, blending Japanese precision with European openness. Near the ICE, you’ll find a wide selection of hotels within walking distance, offering both convenience and comfort throughout your stay. These hotels are not only ideally located for the event, but also nestled close to Kraków’s historic landmarks, allowing you to experience the city’s charm.

5 BEAUTIFUL KRAKÓW

Discover Kraków, a UNESCO World Heritage gem. The city is rich in history and charm – from the iconic Wawel Castle to the vibrant Cloth Hall in the Main Market Square. Stroll through historic districts like Kazimierz and Podgórze, relax in the greenery of Planty Park, and uncover hidden treasures throughout the city. Whether tasting traditional pierogi or admiring Gothic architecture, Kraków offers countless unforgettable experiences.

For more information click here.

See you in Kraków!

BUSTING MYTHS AROUND HIGH-STRENGTH CERAMICS IN DENTISTRY

Crowns, bridges, partial restorations: When it comes to replacing or restoring an individual’s teeth with fixed dental prostheses, the choice is often between the high-strength ceramics - lithium disilicate and zirconia. Originally, the higher aesthetic potential of silicate ceramics made them particularly suitable for single tooth restorations, while the high-strength option zirconia was predominantly used for bridges and frameworks. Due to continuous improvements in the development of dental ceramics and adhesive technology, things have changed. Many of the original limitations and restrictions are no longer valid, and new opportunities arise for users in the dental setting.

In the following, we will address certain persisting myths about the use of zirconia and lithium disilicate in dentistry. In this context, you will receive an update on what is possible with the materials today and guidance on how and when to use them.

1. ZIRCONIA IS AESTHETICALLY INFERIOR TO LITHIUM DISILICATE

The original zirconia used in dentistry was whitish-opaque. Therefore, it was used as a framework material only. To create aesthetic restorations, it was necessary to apply a relatively thick layer of veneering porcelain. More recent generations of zirconia, however, include variants with a particularly high translucency and a multi-layered colour structure. These variants allow for less complex finishing techniques such as micro-layering or external staining. KATANA™ Zirconia UTML (Kuraray Noritake Dental Inc.), for example, is one of the most translucent zirconia materials on the dental market. Depending on the test method used, it offers a similar or only somewhat lower translucency compared to lithium disilicate (IPS e.max CAD LT, Ivoclar Vivadent)^1-4. The desired natural result is achieved as light reaches – and reflects – the underlying tooth structure. Consequently, true-to-life restorations can be produced in an efficient, highly automated workflow.

CONCLUSION

Depending on the variant of zirconia and lithium disilicate used, both materials offer similar aesthetic properties, while even the highest-translucency zirconia is stronger than the highest-strength lithium disilicate available. Material selection may therefore be based on other criteria such as preparation depth for example.

2. ZIRCONIA-BASED RESTORATIONS ARE WEAKER THAN LITHIUM DISILICATE-BASED ONES DUE TO THE NEED OF A PORCELAIN LAYER ON TOP OF ZIRCONIA

This assumption is true for the first generations of dental zirconia. For modern zirconia materials with a high translucency and multi-layered colour structure, however, the situation is different. They are suitable for the production of monolithic restorations or restorations with a minimal (vestibular) cutback and a micro-layer of porcelain. With occlusal contact areas made of plain (polished or glazed) zirconia, these restorations are stronger than monolithic lithium disilicate restorations, while the chipping risk is minimized. In fact, even the weakest zirconia offers a significantly higher flexural strength than lithium disilicate (IPS e.max CAD LT, Ivoclar Vivadent)^2,3. Thanks to the high edge stability of zirconia after milling, the restorations are also highly stable, a favourable property for long-term success.

CONCLUSION

The flexural strength of zirconia is generally higher than that of lithium disilicate (800 to 1,200 MPa for zirconia versus 360 to 460 MPa for lithium disilicate), and due to the improved aesthetic potential of the available materials, a full porcelain layer is no longer required. Hence, zirconia restorations are usually very strong and durable.

3. FINISHING OF ZIRCONIA RESTORATIONS IS MORE COMPLICATED THAN FINISHING OF LITHIUM DISILICATE RESTORATIONS

When using modern, aesthetic zirconia materials, finishing techniques are quite similar. The most popular technique for both, high-translucency zirconia and lithium disilicate, is micro-layering. Based on a full-contour restoration design and a subsequent cutback limited to the vestibular area, a micro-layer of porcelain (often a specific porcelain line-up developed for micro-layering) is applied. With CERABIEN™ MiLai from Kuraray Noritake Dental Inc., the standard procedure consists of internal staining, the application of luster porcelains and final glazing. Fewer layers and fewer bakes are required compared to full porcelain layering. However, aesthetic zirconia can also be used for the production of monolithic restorations, which are characterized with paste stains and glazed.

CONCLUSION 

As a monolithic design or minimal cutback of restorations based on modern zirconia materials is an option, finishing of zirconia is just as easy as finishing of lithium disilicate restorations. The technique depends on the desired outcome.

4. ZIRCONIA-BASED RESTORATIONS ARE MORE INVASIVE THAN THOSE MADE OF LITHIUM DISILICATE

This myth is also based on the assumption that zirconia needs a thick porcelain layer on top to produce aesthetic results. Since this is not the case and great outcomes are possible with monolithic designs or micro-layering approaches, a minimally invasive preparation design is supported by the use of zirconia as a restorative material. Due to a comparatively high strength even of the high-translucency variants, the minimum wall thickness is quite low (e.g. 0.4 mm for veneers made of KATANA™ Zirconia UTML or STML and 0.5 mm for posterior crowns made of KATANA™ Zirconia HTML Plus)*. This allows for a defect-oriented tooth structure removal.

*In general, the minimum wall thickness depends on the product and the indication.

CONCLUSION 

Depending on the type of zirconia and the finishing method, zirconia supports the production of minimally invasive restorations.

5. DUE TO THEIR HARDNESS, MONOLITHIC ZIRCONIA RESTORATIONS HARM THE OPPOSING DENTITION

When manufacturers of dental zirconia started promoting the monolithic use of zirconia, in-vitro studies were soon available to prove that it is not the hardness of the material, but the smoothness of the surface that determines how kind or harmful a dental restoration is to the opposing dentition^5-8. According to those studies, well-polished zirconia surfaces maintained their smoothness and showed a superior self-wear and wear to the opposing tooth structure compared to other restorative materials including lithium dislilicate^6-8. As glaze - unlike the polished surface - tended to wear off over time, it was stressed that a perfectly polished restoration surface is essential for a wear-friendly long-term behaviour. The in-vitro study results were also confirmed in vivo^9,10. According to the latest umbrella review focusing on this topic, polished monolithic zirconia causes lower antagonist enamel wear than metal ceramics, feldspathic porcelains and lithium disilicate tested¹⁰.

CONCLUSION 

Provided that the surface is smooth, monolithic zirconia restorations are kind to the opposing natural tooth structure. Over time, the opposing enamel wear may be expected to be on a similar level as natural enamel wear.

6. ADHESIVE LUTING OF ZIRCONIA-BASED RESTORATIONS IS IMPOSSIBLE

When oxide ceramics like zirconia are processed and pre-treated in the same way as silicate ceramics like lithium disilicate, the obtained bond strength is lower. Using the correct pre-treatment protocol, however, it is possible to establish a strong and durable chemical bond between the tooth structure and the zirconia. Otherwise, it would not be possible to place single-retainer resin-bonded bridges made of high-strength zirconia (3Y-TZP) successfully, for example. Their design is largely non-retentive, so that a strong bond is of paramount importance. It is established by air-abrading the bonding surface of the zirconia retainer wing with aluminium oxide (50 μm) at a low pressure (approx. 1 to 2.5 bar) after try-in^11,12, followed by ultrasonic cleaning, the use of a restoration primer that contains 10-MDP¹³ and the application of a high-performance resin cement like PANAVIA™ V5 (Kuraray Noritake Dental Inc.)¹⁴. Using this protocol with a predecessor of the resin cement just mentioned, ten-year survival and success rates were above 90 percent¹⁵. The described protocol is in line with the APC concept recommended by Prof Dr. Markus Blatz, which includes (A) airborne-particle abrasion, (P) zirconia primer, and (C) adhesive composite resin application¹⁶.

CONCLUSION

Using an appropriate protocol including small particle air-abrasion after try-in and a high-performance adhesive resin cement system with MDP primers, a strong and long-lasting chemical bond to zirconia can be established.

7. ZIRCONIA IS UNSUITABLE FOR RUSH CASES DUE TO THE NEED OF SINTERING THE RESTORATIONS AFTER MILLING

By using zirconia variants that are suitable for speed sintering, smaller restorations can be produced within very short time. Single-unit restorations and small bridges (up to three units) made of materials of the KATANA™ Zirconia Multi-Layered Series, for example, may be speed-sintered within 54 minutes, provided that a suitable furnace is used. This leads to a considerable reduction of the production time and is a great option for rush cases. For a true chairside workflow and same-day dentistry, KATANA™ Zirconia Block is a great option. It offers the same optical and mechanical properties as KATANA™ Zirconia STML and can be sintered even faster – in just 18 minutes.

CONCLUSION

By using suitable zirconia materials and equipment, production times of zirconia restorations are no longer an issue when it comes to rush cases.

8. ALL HIGH-STRENGTH CERAMICS HAVE A SIMILARLY WIDE RANGE OF INDICATIONS

In fact, the range of indications varies with the flexural strength and fracture toughness of the materials. While the use of lithium disilicate is limited to the production of single-tooth restorations and small bridges, zirconia typically covers a wider range of indications, with the high-strength variants being even suited for long-span bridges. The most versatile variants of zirconia are those with flexural strength gradient – like KATANA™ Zirconia YML. This material offers a particularly high translucency in the enamel layer and a high strength in the body layers. Therefore, it is well suited for the production of single-tooth restorations and of highly complex structures such as long-span bridges – depending on where the restoration is positioned in the disc.

CONCLUSION

Zirconia offers a wider range of indications than lithium disilicate. By selecting one of those variants with a multi-layered structure offering flexural strength gradation, it is possible to cover virtually every indication, while other variants are better suited for specific needs (highest translucency option for aesthetically demanding cases, highest strength option for complex long-span designs).

ZIRCONIA A TRUE ALLROUNDER

Modern versions of dental zirconia are high-performance materials with well-balanced optical and mechanical properties typically suitable for a wide range of indications. As a zirconia user, you may choose to employ a single material with flexural strength gradation for virtually every situation or prefer to select different products depending on case-specific demands. You have the freedom to select the preferred finishing technique from traditional layering to just polishing and may opt for minimally invasive restoration designs. The latter is due to proven protocols establishing a long-lasting bond to zirconia. For everyone with particularly high quality demands, the KATANA™ Zirconia Multi-Layered series is worth a try. The raw material composition is unique, the powder is developed in-house in Japan and the blanks are produced in a perfectly aligned procedure delivering a homogeneous, densely pressed material for restorations with an accurate fit, high strength and superior edge stability.

REFERENCES

<sup>1. F. Beuer, J. Schweiger, ConsEuro 2015 London, Kuraray Satellite Symposium, May 14th 2015. 
2. Kwon SJ, Lawson NC, McLaren EE, Nejat AH, Burgess JO. Comparison of the mechanical properties of translucent zirconia and lithium disilicate. J Prosthet Dent. 2018 Jul;120(1):132-137. 
3. Reale Reyes A, Dennison JB, Powers JM, Sierraalta M, Yaman P. Translucency and flexural strength of translucent zirconia ceramics. J Prosthet Dent. 2023 Apr;129(4):644-649. 
4. Harada K, Raigrodski AJ, Chung KH, Flinn BD, Dogan S, Mancl LA. A comparative evaluation of the translucency of zirconias and lithium disilicate for monolithic restorations. J Prosthet Dent. 2016 Aug;116(2):257-63. 
5. Janyavula S, Lawson N, Cakir D, Beck P, Ramp LC, Burgess JO. The wear of polished and glazed zirconia against enamel. J Prosthet Dent. 2013 Jan;109(1):22-9. 
6. Preis V, Weiser F, Handel G, Rosentritt M. Wear performance of monolithic dental ceramics with different surface treatments. Quintessence Int. 2013 May;44(5):393-405. 
7. Lawson NC, Janyavula S, Syklawer S, McLaren EA, Burgess JO. Wear of enamel opposing zirconia and lithium disilicate after adjustment, polishing and glazing. J Dent. 2014 Dec;42(12):1586-91. doi: 10.1016/j.jdent.2014.09.008. Epub 2014 Sep 23. PMID: 25257823. 
8. Sripetchdanond J, Leevailoj C. Wear of human enamel opposing monolithic zirconia, glass ceramic, and composite resin: an in vitro study. J Prosthet Dent. 2014 Nov;112(5):1141-50. 
9. Hartkamp O, Lohbauer U, Reich S. Antagonist wear by polished zirconia crowns. Int J Comput Dent. 2017;20(3):263-274. 
10. Shah N, Nerkar H, Badwaik P, Ahuja B, Malu R, Bhanushali N. An evaluation of antagonist enamel wear opposing full-coverage zirconia crowns versus other ceramics full-coverage crowns and natural enamel - An umbrella review. J Indian Prosthodont Soc. 2024 Jul 1;24(3):217-224. 
11. Kern M. Bonding to oxide ceramics—laboratory testing versus clinical outcome. Dent Mater. 2015 Jan;31(1):8-14. 
12. Kern M, Beuer F, Frankenberger R, Kohal RJ, Kunzelmann KH, Mehl A, Pospiech P, Reis B. All-ceramics at a glance. An introduction to the indications, material selection, preparation and insertion techniques for all-ceramic restorations. Arbeitsgemeinschaft für Keramik in der Zahnheilkunde. 3rd English edition, January 2017. 
13. Al-Bermani ASA, Quigley NP, Ha WN. Do zirconia single-retainer resin-bonded fixed dental prostheses present a viable treatment option for the replacement of missing anterior teeth? A systematic review and meta-analysis. J Prosthet Dent. 2021 Dec 7:S0022-3913(21)00588-6. 
14. Bilir H, Yuzbasioglu E, Sayar G, Kilinc DD, Bag HGG, Özcan M. CAD/CAM single-retainer monolithic zirconia ceramic resin-bonded fixed partial dentures bonded with two different resin cements: Up to 40 months clinical results of a randomized-controlled pilot study. J Esthet Restor Dent. 2022 Oct;34(7):1122-1131. 
15. Kern M, Passia N, Sasse M, Yazigi C. Ten-year outcome of zirconia ceramic cantilever resin-bonded fixed dental prostheses and the influence of the reasons for missing incisors. J Dent. 2017 Oct;65:51-55. doi: 10.1016/j.jdent.2017.07.003.
16. Blatz MB, Alvarez M, Sawyer K, Brindis M. How to Bond Zirconia: The APC Concept. Compend Contin Educ Dent. 2016 Oct;37(9):611-617; quiz 618.</sup>

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CLEARFIL™ Ceramic Primer Plus ACHIEVES PREFERRED PRODUCT STATUS FOR THE EIGHTH TIME

A Preferred Product of Dental Advisor’s consultants for its ability to bond to a wide variety of restorative materials: CLEARFIL™ Ceramic Primer Plus received this recognition every year since 2018. This year’s awards have been published in the January/February 2025 issue of the publication. The universal primer provides exceptional bond strength, particularly to silica-based ceramics, zirconia, and composites. Its consistent performance has earned it the recognition of clinicians worldwide.

HOW IT WORKS

CLEARFIL™ Ceramic Primer Plus is a single-bottle primer that combines the power of two essential components: the original MDP monomer, which creates a strong bond with metals and zirconia, and the silane coupling agent MPS, which ensures excellent adhesion to composites and silica-based ceramics. This dual chemistry enables exceptional bonding performance across a variety of materials. Designed to work seamlessly with PANAVIA™ V5 and PANAVIA™ Veneer LC, it provides a reliable foundation for long-lasting indirect restorations.

 
Features contributing to procedural simplicity include:

• Primer bottle designed for effortless one-handed operation.
• Unique nozzle for precise dispensing.
• Straightforward application: Just apply and dry.

CONVINCING CLINICAL PERFORMANCE

In a clinical evaluation, the consultants of the Dental Advisor testing the product highlighted its efficiency and ease of use. They stated: "Quick to apply and wets ceramic well" and “Easy to use on a variety of materials”.

As a result, the product received a clinical performance rating of 96 percent. Comparing the universal primer to the product they currently used, all consultants were sure that CLEARFIL™ Ceramic Primer Plus shows an equal or even better overall performance.

ABOUT DENTAL ADVISOR

The Top Product and Preferred Product Awards from Dental Advisor, a US-based organization, were initiated to help busy practitioners navigate the variety of new dental solutions available, particularly for less invasive techniques and standardized procedures. These awards aim to identify products that improve outcomes consistently. Dental Advisor conducts clinical evaluations and product performance tests shortly after a product’s launch and publishes annual results online to help practitioners identify high-quality dental materials suited to their specific needs.

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