Kugel Gerard, Perry Ronald D, Aboushala Ayman
Department of Prosthodontics and Operative Dentistry, Tufts University School of Dental Medicine, Boston, Massachusetts, USA.
Compend Contin Educ Dent. 2003 Aug;24(8):569-72, 574, 576 passim; quiz 580.
Despite proven strength, durability, and improved esthetics, ceramometal restorations have not consistently enabled the most esthetic, lifelike reproduction of natural dentition. Also, inherent weaknesses in many metal-free materials have precluded their use in the high stress-bearing posterior region. Therefore, as a result of the need for esthetic and durable all-ceramic restorations, manufacturers have introduced ceramics with an increased alumina or zirconia content that are recommended for placement anywhere in the mouth for single units and as far back as the first premolar.
尽管烤瓷熔附金属修复体已被证明具有强度、耐用性和美学效果的提升，但它并不能始终如一地实现对天然牙列最美观、逼真的再现。此外，许多无金属材料固有的弱点使其无法用于承受高应力的后牙区域。因此，由于需要美观且耐用的全瓷修复体，制造商推出了氧化铝或氧化锆含量增加的陶瓷，推荐用于口腔内任何位置的单颗修复体，最远可用于第一前磨牙。
