—患者，右上6大面积银汞充填。检查：MOD大面积银汞充填体，牙冠剩余牙体组织少，仅残留颊舌侧壁，无松动，无叩痛，已行完全根管治疗。设计行桩核冠修复，牙体预...

作者: tihaiku 人气: - 评论: 0

问题 —患者，右上6大面积银汞充填。检查：MOD大面积银汞充填体，牙冠剩余牙体组织少，仅残留颊舌侧壁，无松动，无叩痛，已行完全根管治疗。设计行桩核冠修复，牙体预备首先要

选项 A.全部磨除牙冠 B.先按照全冠预备体的要求进行磨除 C.先制备固位沟 D.先制备箱状洞形 E.先去除颊舌侧壁

答案 B

解析

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