Dental Asia May/June 2018

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Behind the Scenes Cementation Drainage is achieved using a rubber dam and clamps without wings (Fig. 16). The milled inlay was separated from the block and the cone piece is milled manually while occlusal contacts only required minimal adjustment. Restorations fabricated using the hybrid ceramic may not be reworked using carbide instruments; instead, only diamond-tipped milling tools or special polishing instruments such as the Vita Enamic polishing set clinical/ technical may be used. Fig. 16: Complete drainage using a rubber dam S h a d e c h a r a c t e r i s a t i o n u s i n g t h e Vita Enamic stains kit was not performed in this case. Manual reworking was followed by a try-in. Whether the correct block shade has been selected cannot be determined at this point. As only air rather than cementation material is present as a medium between the tooth substance and the restoration, as there is no shade correlation between the dentine and the inlay, the shade result at this stage is not yet convincing. Cementation was performed u s i n g t h e a d h e s i v e t e c h n i q u e , w i t h Syntac Classic (Ivoclar Vivadent) for dentine bonding and Vita Duo Cement in shade A3 for cementation. In preparation, the inlay was etched for 60 seconds using hydrouoric acid, then silanised for 60 seconds using Monobond Plus, and then finally coated with Heliobond (Ivoclar Vivadent). After using a medium shade for cementation, which aects the depth shade from within the remaining tooth structure, a change in shade was immediately visible (Fig. 17). By the time the restoration has been fully cured and cleared of all excess adhesive, after nal polishing is done and the rubber dam has been removed, the tooth has dried to such an extent that the shade result at this point is not yet convincing (Fig. 18). However, the photographic image from the checkup a week after placement demonstrates the excellent shade result (Fig. 19). At this point, the occlusal contacts were once again successfully veried using articulating paper (Fig. 20). Fig. 18: Incorrect shade impression following removal of the rubber dam due to dehydration of the tooth Fig. 20: Successful verication of the occlusal contacts Conclusion The positive results achieved in tests using Vita Enamic have been confirmed in my day to day clinical experience. Thanks to excellent processing properties, it is particularly easy to quickly achieve superior quality results that are also impressive in terms of aesthetics. As usual, a certain level of experience and the trained eye of a seasoned practitioner are benecial in this aspect. DA References 1. Bilkhair A, Güß P. Fatigue behavior and damage modes of a monolithic CAD/CAM hybrid ceramic (Vita Enamic) material compared to CAD/CAM all-ceramic posterior crown restorations. Publication forthcoming 2. Mörmann W, Stawarczyk B, Ender A, Sener B, Attin T, Mehl A (2013). Wear characteristics of current aesthetic dental restorative CAD/CAM materials: Two-body wear, gloss retention, roughness and Martens hardness. In: J Mech Behav Biomed Mater. Apr 20(4): S. 113-125 Fig. 17: After using a medium shade for cementation material, there is an immediate visible change in shade. Fig. 19: Perfect shade result one week after placement 56 DENTAL ASIA MAY / JUNE 2018
The 3rd “MYANMAR’S LEADING MEDICAL, DENTAL, LAB AND PLASTIC SURGERY EVENT!” Behind the Scenes 6 th 2018 Co-Located With The 3rd Edition of 2018 Edition of PHARMA 6th The 4th Edition of MYANMAR 2018 10-12 OCTOBER 2018 Novotel Yangon Max ConventionCentre, Yangon, Myanmar Tel : (+95) 9 250 175 661 E-mail : myanmar@asiafireworks.com Endorsed d and dSupported dby : In nAss Association so With : Brought To You By : DENTAL ASIA MAY / JUNE 2018 Myanmar Pharmaceutical & Medical Equipment Entrepreneurs Association Myanmar Dental Association SAVOR International Limited Fireworks Myanmar Part of Fireworks Trade Media Pte Ltd 57
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Dental Asia May/June 2018

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