the new dna of high strength glass ceramics

Transcription

1 the new dna of high strength glass ceramics 1

2 the new dna of high strength glass ceramics Together with the Fraunhofer Institute and VITA, we have developed a new class of materials for high-strength glassceramics from zirconia-reinforced lithium silicate: ZLS. zls The outstanding properties of ZLS are a function of its unique microstructure. Properties of ZLS High glass content High translucency, opalescence, fluorescence 10% zirconia High mean flexural strength Very small lithium silicate crystals Ultra-fine microstructure Microstructures compared ZLS LS 2 The inclusion of 10% zirconia results in four times smaller lithium silicate crystals in ZLS. The result is an ultra-fine microstructure which combines high average flexural strength with a high glass content. Glass with completely dissolved zirconia Lithium silicate crystals, nm Glass Lithium disilicate crystals, nm 2

3 Clinical benefits of ZLS Esthetic Chameleon effect and opalescence Strong For safety and long-term stability Fast Efficient, rapid processing To tap these benefits for dental offices and laboratories, we took ZLS as the starting point for the development of a new high-strength allceramic system: 3

4 Esthetic, STRONG, FAST Composed of lithium metasilicate, lithium disilicate and lithium phosphate crystals, the specific CELTRA properties rely on its threefold functional microstructure. CELTRA stands for successful all-ceramic restorations: with exceptional esthetics.. with outstanding strength An increased glass content visibly improves esthetics by facilitating in-depth opalescence and fluorescence. The dissolution of zirconia does not cloud the glass and reinforces the glass matrix. In combination with the presence of the glassceramic crystals, this results in very high strength. Opalescence Load at fracture, anterior crowns MEDIAN LOAD AT FRACTURE [N] CELTRA e.max Vita Mark II Before artificial aging After artificial aging Thermal cycling (5 C 55 C), 6000 cycles, followed by 1.2 million chewing cycles at 70 N. 4 Source: S. Rues, D. Müller, M. Schmitter, University of Heidelberg 2012, data available in request.

5 3... in a minimum of time No extra investment! The very small glass-ceramic crystals (less than 1 µm) allow the material to be finished and polished in its final crystallized, tooth-coloured state. An additional crystallization as with lithium disilicate is not required. No capital investment in new equipment is required either at the lab or the dental office. The same furnaces and milling units can be used as for conventional CEREC blanks. No extra hardware investment No extra software investment Easy processing No extra investment for complementary products In this way, a pure-bred chairside procedure becomes feasible. The already excellent esthetics appearance can customized by staining, and the strength of the restoration can be increased by a glaze-firing cycle. 5

6 CELTRA: THE SYSTEM AT A GLANCE CELTRA for the dental laboratory labside Pre-crystallized, high strength (420 MPa) Customization options: ceramic veneering or staining, 360 veneers using the cut-back technique or simple staining. High strength (more than 300 MPa), three-unit bridges up to and including the premolars, simple to process, easy to polish. 6

7 CELTRA for the dental surgery chairside Crystallized, high strength (210 MPa; 370 MPa after glaze firing). Optimally matched, clinically proven. CEMENTATION system The CEREC chairside workflow CAD CAM CAD/CAM-BLOCK CEMENTATION CEREC AC CEREC MC XL CELTRA DUO Calibra Automix 7

8 CELTRA Duo ONE BLOCK TWO TECHNIQUE OPTIONS 1 Minimal effort Grinding Polishing Cementing The clinical outcome Significantly higher fracture strength than glass ceramics achieved in the same time and without any additional equipment Molar crown, block size C14, standard grinding program CELTRA DUO MPA MIN 14:30 MIN 210 MPa glass ceramics MIN 13:00 min MPA 120 MPa Grinding 8 SIGNIFICANTLY STRONGER THAN GLASS CERAMICS IN THE SAME TIME.

9 2 Maximum fracture resistance Grinding Glazing Cementing The clinical outcome The fracture strength of a high-strength lithium disilicate achieved by a a short glaze firing cycle and a tooth-coloured precrystallized CELTRA Duo block. Molar crown, block size C14, standard grinding program CELTRA DUO MPA MIN 14:30 13:00 27:30 MIN 370 MPa lithium disilicate MIN MPA 13:30 29:00 13:00 55:30 MIN 360 MPa Grinding Crystallization Glaze firing SAME STRENGTH AS LITHIUM DISILICATE IN LESS TIME. 9

10 the cementation system 1 Fast and easy procedure 2 Complete DENTSPLY Solution The products are arranged according to the clinical sequence in a convenient Organizer Tray. All components of the cementation system provide excellent performance. Many components can be used for additional indications, such as the universal total etch adhesive XP BOND. Easy clean up No irrigation required 10

11 cementation system 3 Certified Treatment Solution All components of the cementation system offer proven compatibility and a successful clinical history. Certified compatibility 11

12 Finish strong 1 Easy clean up 2 Shade Stable Chemistry Translucent Light Medium Dark Opaque Displayed colors may not perfectly represent the actual product Light cure excess cement up to 10 seconds to initiate gel phase that makes clean up fast and simple. Five shades provide a full spectrum of esthetic shading. The Shade Stable TM Chemistry ensures that the shades will not shift over time. Marginal Integrity of ceramic inlays after thermal cycling Without separate light curing of the adhesive layer Dentine Enamel Marginal Integrity [%] 50 * * * Significantly lower than XP BOND + Self Cure Activator + Calibra 0 XP BOND + SCA + Calibra ED Primer + Panavia F Multilink Primer + Multilink 2 Syntac Classic + Variolink II Source: Frankenberger et al: Dent Mater Feb;24(2): Not a registered trademark of DENTSPLY International, Inc.

13 FORGIVING 3 Technique Robustness XP BOND has shown promise, as it is relatively insensitive to the amount of residual dentin moisture. This characteristic can effectively widen the window of opportunity for bonding to demineralized dentin, and can generate a system with excellent dentin adhesion under a wide range of clinical conditions. (M. Latta) 1 Classic Etch&Rinse Adhesives require an optimum level of dentin moisture to reach their full potential. However, this is difficult to achieve and can lead to insufficient bond strength and post-operative sensitivities. XP BOND is forgiving! It offers extra Performance even under different levels of dentin moisture. Less worries for better results! Shear Bond Strength on over wet and over dried dentin 2 SHEAR BOND STRENGTH [MPa] Optimum Over wet Over dried 0 XP BOND Excite 3 Optibond Solo Plus 3 ScotchBond 1 TX 3 Syntac 3 1 Latta MA, Clinical Perspectives on Current Dental Adhesives, 2008 The Academy of Dental therapeutics and Stomatology ADTS CE course 2 Source: Latta et al.: Effect of Residual Dentin Moisture on Shear Bond Strength. J Dent Res 2010; 89 (Spec Iss B): 4 3 Not a registered trademark of DENTSPLY International, Inc. 13

14 ORDERING INFORMATION Product REF CELTRA TM Starter Kit CELTRA TM Duo Blocks CELTRA Duo LT A1 C CELTRA Duo LT A2 C CELTRA Duo LT A3 C CELTRA Duo LT A3.5 C CELTRA Duo LT B2 C CELTRA Duo HT A1 C CELTRA Duo HT A2 C CELTRA Duo HT A3 C CELTRA Cementation System Starter Kit CELTRA Duo > > One block two applications > > Exceptional esthetics > > Outstanding strength 2 CELTRA Cementation System > > Quick and easy application > > Component compatibility guaranteed > > Everything from one source 14

15 Product REF Calibra Automix, Dual barrel-syringe à 4.5 g Translucent Light Medium Dark Opaque XP Bond XP BOND Refill, 1 5 ml CELTRA can be processed with one of several systems of our CAD/CAM partners. For questions about the different CAD/CAM systems and their use, no not hesitate to approach our respective partner. XP BOND Eco Refill, 3 5 ml Self Cure Activator Self Cure Activator, ml K For more information please contact: Sirona Dental Systems GmbH Fabrikstrasse Bensheim Germany contact@sirona.de 3 Calibra Automix 4 Bonding-System > > No irrigation required > > Any excess easily removed > > Low film thickness for a perfect fit > > Technique-insensitive > > High adhesion performance > > Complete dark-curing in conjunction with Calibra Automix and Self-Cure Activator 15

16 22243/1302/DB Last Revision: 02/2013 DeguDent GmbH Rodenbacher Chaussee Hanau-Wolfgang Germany