Dental Asia Jul/Aug 2018

51 User Report DENTAL ASIA JULY / AUGUST 2018 $ERXW WKH $XWKRU 0U 9DQLN .DXIPDQQ -LQRLDQ WUDLQHG DV D GHQWDO WHFKQLFLDQ LQ %DVHO 6ZLW]HUODQG +H LV RZQHU RI WKH & H U D 7H F K G H Q W D O ODERUDWRU\ LQ /LHVWDO DQG LV LQYROYHG ZLWK &HUD 7HFK LQ UHVHDUFK DQG GHYHORSPHQW RI QHZ GHQWDO SURGXFWV +H LV DOVR YLFH SUHVLGHQW RI WKH 9=/0 $VVRFLDWLRQ RI 'HQWDO 7HFKQRORJ\ ,QVWUXFWRUV LQ 6ZLW]HUODQG High-gloss polishing Polishing instruments were developed for reworking the hybrid ceramic that were specifically adapted to the properties of the material. Using these instruments are recommended in order to achieve superior surface finishing simply, reliably and efficiently. The Vita Enamic Polishing Set is available in a technical variant for laboratory use as well as a clinical variant for use in dental practices (Fig. 14). As mentioned previously, only final polishing was carried out in this case by the dental surgeon. A transition area between the restoration material and the natural tooth substance is not discernible (Fig. 15). In order to obtain a natural surface shine, two steps must be performed: Ƥrst, prepolishing must be done using the pink polishing instruments while cooling with water (7,000-10,000 rpm), followed by high-gloss polishing while cooling with water using the diamond coated, gray polishing instruments (5,000-8,000 rpm). Excellent results are achieved when the lowest rpm rate is used to perform what amounts to Ƥnal high-gloss polishing without cooling with water. Generally, reduced contact pressure must be used. Results A b e f o r e - a n d - a f t e r c omp a r i s o n (Fig. 16a-16b) shows theconsiderable impact that was achieved using comparatively simple methods: the former ‘Twilight’ girl now sports a lovely smile, her appearance that of a completely normal teenager. Summary Vita Enamic generally allows superior restorations to be fabricated very quickly and inexpensively. The dental surgeonwho was initially sceptical has since become an enthusiastic fan of the hybrid ceramic. Vita Enamic is distinguished by the fact that it o ơ ers both stability and elasticity, as well as other properties. This ensures unusually high edge stability. With a conventional CAD/CAM glass ceramic such as lithium disilicate ceramic, it would not be possible to create partial non-prep veneers in this way. Due to their brittle characteristics, itwouldhavebeenexpected that such materials would fracture when milling thin restorationmargins of this kind. Thanks to the intelligent combination of ceramic and polymer material, Vita Enamic is also the Ƥrst material to demonstrate properties incredibly similar to those of natural dentition. After all, the human tooth is not rigidly Ƥxed, but is always subject to a certain degree of movement. It can be assumed that a Vita Enamic restoration will bond reliably with the tooth substance when adhesively cemented in the mouth, and it will flexibly adapt thanks to its elasticity. These are excellent prerequisites for a lasting, durable restoration. DA Fig. 16b: Post treatment – a natural, relaxed smile demonstrates her new- found conƤdence Fig. 16a: Patient prior to treatment – the anomaly is immediately obvious Fig. 15: Based on shade determination Fig. 14: Vita Enamic polishing set clinical variant