Seymour K G, Samarawickrama D Y, Lynch E J
Department of Conservative Dentistry, St. Bartholomew's and the Royal London School of Medicine and Dentistry, Queen Mary and Westfield College, Whitechapel London, UK.
Eur J Prosthodont Restor Dent. 1999 Jun-Sep;7(2):79-84.
The metal ceramic crown has become the most popular extra-coronal restoration in the armamentarium of the dentist, certainly within the UK. It combines the aesthetic qualities of porcelain with the strength of cast metal. This review discusses a number of issues relating to these crowns, and considers the principles of tooth preparation and marginal fit. The physical requirements of tooth preparation are considered in terms of shoulder width, emergence profile, shoulder angle and effects on the pulp. It also considers the teaching of metal ceramic crown preparation, the failure of metal ceramic crowns and the influence that preparation quality has on these failures.
金属烤瓷冠已成为牙医治疗手段中最受欢迎的冠外修复体，在英国当然也是如此。它将瓷的美学特性与铸造金属的强度结合在一起。本文综述了与这些冠相关的一些问题，并探讨了牙体预备原则和边缘适合性。从肩台宽度、外形高点、肩台角度以及对牙髓的影响等方面考虑牙体预备的物理要求。还考虑了金属烤瓷冠预备的教学、金属烤瓷冠的失败情况以及预备质量对这些失败情况的影响。
