目前很多的成人患者在进行正畸治疗,相对于青少年患者他们口内牙齿状况复杂,因此正畸医生要面对不同材料的修复体诸如汞合金、黄金、复合树脂和陶瓷等,其中各种材料的陶瓷修复体因其具有良好的生物相容性、电绝缘性、耐酸碱腐蚀性和接近于人牙釉质的热传导系数,因此用其制作全冠、桥、贴面及桩核等全瓷修复体不仅可以逼真地模拟真牙 At present, many adult patients are undergoing orthodontic treatment. Compared to young patients, their dental conditions in their mouth are complicated. Therefore, orthodontists face prostheses of different materials such as amalgam, gold, composite resin and ceramic, among which, Because of its good biocompatibility, electrical insulation, acid and alkali corrosion resistance and close to the thermal conductivity of human enamel, ceramic restorations are used to make all-ceramic restoration such as crown, bridge, veneer and post core Body not only realistic simulation of real teeth