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International Journal of Periodontics & Restorative Dentistry



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Int J Periodontics Restorative Dent 26 (2006), Nr. 1     25. Jan. 2006
Int J Periodontics Restorative Dent 26 (2006), Nr. 1  (25.01.2006)

Seite 30-41, PubMed:16515094, Sprache: Englisch

Optical Behavior of Current Ceramic Systems
Raptis, Nicolas V./Michalakis, Konstantinos X./Hirayama, Hiroshi
The restoration of anterior teeth is a difficult task, even for an experienced operator. Currently there are many different ceramic systems that can be used to achieve highly esthetic results. These include metal-ceramics with porcelain margins, Dicor, In-Ceram, Cerestore, Hi-Ceram, IPS-Empress, Cerapearl, Optec, and CAD/CAM ceramics. While metal-ceramics have been used for more than four decades, the quest for a material that transmits and refracts light like a natural tooth has inspired research into all-ceramic restorations. The purpose of this paper is to briefly discuss the properties of each of the above-mentioned materials and clinically evaluate the optical behavior of: (1) metal-ceramic crowns with castings 2 mm short of the shoulder preparation and 360-degree porcelain margins; (2) In- Ceram Spinell restorations; and (3) IPS Empress restorations, and to compare these with metal-ceramic crowns with copings to the shoulder preparation and 180-degree porcelain margins. Light transmission characteristics and color matching were subjectively evaluated by five experienced prosthodontists who did not participate in this clinical study.
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