brochure - CAD/CAM SYSTEMS | I NSTRUMENTS | HYGIENE SYSTEMS...

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The Dental Company CAD/CAM SYSTEMS | INSTRUMENTS | HYGIENE SYSTEMS | TREATMENT CENTERS | IMAGING SYSTEMS CEREC – THE MOST IMPORTANT CLINICAL STUDIES Scientif cally secure.
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02 | 03 Contents Foreword and word of thanks . . . . . . . . . . . . . . . . . . . . . . . . 03 1 | Long-term performance of CEREC restorations . . . . . . . 04 1.1 Inlays/onlays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04 1.1.1 Long-term study of 2,328 chairside inlays/onlays . . . 04 1.1.2 Eighteen-year study of 1,011 inlays/onlays . . . . . . . . 05 1.2 Veneers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06 1.3 Crowns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07 1.4 Comparison with other restoration types. . . . . . . . . . . . . . . 08 1.4.1 Clinical comparison . . . . . . . . . . . . . . . . . . . . . . . . . . 08 1.4.2 Longevity and cost-effectiveness. . . . . . . . . . . . . . . . 09 1.4.3 Longevity and productions costs . . . . . . . . . . . . . . . . 09 2 | Precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 Image precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.1 Single tooth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.2 Quadrant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.2 Milling precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2.1 Camera/milling unit. . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2.2 Marginal fit of restorations . . . . . . . . . . . . . . . . . . . . 11 3 | Marginal gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1 Adhesive interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1.1 Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1.2 Marginal seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1.3 Wear of the adhesive interface . . . . . . . . . . . . . . . . . 13 3.2 Comparison of other restoration types. . . . . . . . . . . . . . . . . 14 3.2.1 Enamel integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2.2 Margin quality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Quod est est – What is, is. In the final analysis it all comes down to hard facts and evidence. This is precisely the purpose of the present compendium. Our aim is to summarize the latest clinical studies relating to CEREC so that you are in a position to interpret and evaluate the scientific findings. CEREC certainly ranks as one of the most intensively scrutinized dental procedures – as evidenced in numerous clinical studies and a wide range of scientific publications. For example, universities and scientifically oriented dental practices are continuously monitoring the survival rates of CEREC restor- ations (inlays, onlays, crowns and veneers) which were created and placed during a single appointment. The projected long-term survival rates are as high as 84.4 per cent after 18 years. In terms of quality CEREC restorations are at least on a par with cast gold – and clearly superior to composite fillings and other ± laboratory-produced±restorations. Computer-aided dentistry has progressed enormously. The marginal gaps have reached laboratory standards. The design of the proximal contacts has become very reliable. The occlusal surfaces contained in the dental databases have been compiled by universities and re- nowned dental technicians. The CEREC system makes allowance for the patient’s articulation and antagonists. All that is needed is a good dentist – someone like you. The CEREC-Team Over the past 20 years numerous persons have contributed to the further development of Professor Mörmann’s original idea – i.e. to create high-quality ceramic restorations during a single appoint- ment. This applies firstly to the members of the research teams at Siemens, Sirona, Vita Zahnfabrik, Ivoclar Vivadent, Merz, Zeiss and at numerous small and medium-sized enterprises. Secondly, more than 200 universities worldwide have conducted detailed research and made countless improvements – both large and small – to the CEREC procedure. Mention must also be made of the CEREC users, the CEREC instructors, the International Society for Computerized Dentistry and its national organizations. All these persons and or-
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