椿冠是一种修复失活牙较为理想的修复体,常用于前牙修复。桩冠根面设计方法有多种,最常用的是双斜面形。本文对残留牙冠较多的前牙,修复时采用四斜面形根面设计的铸造帽状冠椿钉(暂名)。效果较好,现报道如下。材料与方法 29例(男11,女18)32颗牙。年龄18～65岁,其中绝大多数为青年。上中切牙24颗,上侧切牙6颗,上尖牙1颗,下侧切牙1颗。其中一颗上中切牙椿冠作为固定义齿的固位体,一颗尖牙椿冠作为可摘 Chun crown is a restoration of the ideal dental prosthesis, commonly used in anterior teeth repair. There are many ways to design crown design of crown, the most commonly used is double bevel shape. In this paper, the residual crown more anterior teeth, repair the use of four bevel-shaped root surface design casting crown crown nail (tentative name). The effect is better, are reported below. Materials and Methods 29 cases (male 11, female 18) 32 teeth. Aged 18 to 65 years old, of which the vast majority of young people. 24 upper incisors, 6 upper incisors, 1 upper incisor and 1 lower incisor. One of the upper incisor crown as a fixed denture retainer, a canis crown as a removable