ARAB DENTAL  •  ISSN 1861-8251

ARAB DENTAL 24 (2011), No. 4     15. Dec. 2011
ARAB DENTAL 24 (2011), No. 4  (15.12.2011)

Page 30-33, Language: Arabic

Scientific Research: What Effect Do Porcelain Restorations Have on the Opposing Dentition?
In summary, a hard material does not necessarily result in a high degree of wear on the opposing dentition. The effect on the opposing tooth is determined instead by the surface of the restoration: the smoother the surface the more favourable the effect. Glass porcelain and lithium disilicate become rougher over time, which results in a high degree of abrasion. By contrast, polished zirconia results in lower abrasion on the opposing tooth - even after spot grinding. The lowest degree of wear is achieved by the latest generation of zirconia (Cercon ht). Its tolerance for the opposing dentition has been tested under practical conditions