The technique, pioneered in Italy in the 1960s, involves creating a support for an artificial cornea from the patient's own tooth and the surrounding bone.
该技术于上世纪60年代起源于意大利，它是用病人自己的牙齿和牙齿附近的骨头来支撑人造角膜。
2
Tooth is the important constituent of the occlusal support system and tooth missing may cause the occlusal support function subsiding or losing.
牙齿是咬合支持系统的重要组成部分，牙齿的缺失尤其是多数牙齿的缺失必然导致咬合支持状态的改变。
3
An alternative rest-seat preparation, on the marginal ridge of the canine crown, conserves tooth structure and provides a rest seat of adequate length and depth to ensure support for a cast framework.