首页/ 题库 / [单选题]患者，女，28岁。因龋齿致牙冠大部分缺损的答案

患者，女，28岁。因龋齿致牙冠大部分缺损，影响美观。要求固定义齿修复。查，1残根，叩（一），X线检查，1已行根管治疗，根充完全。在备牙时，桩冠颈缘设计不正确的作法是（　　）。

单选题
2021-07-17 21:24
A、如为金属烤瓷冠，唇缘牙体预备形式可为135°肩台
B、如为全瓷冠，应作90°肩台
C、唇侧肩台宽度不少于1.0mm
D、舌面肩台宽度不少于0.5mm
E、各轴面肩台不必连续
查看答案
正确答案
E
试题解析
标签： 医药卫生类 执业医师 口腔执业医师 口腔临床医学综合精选真题及详解（1）
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