悬空式桥体与牙槽嵴黏膜之间应留有的间隙为A. 0.5mm B. 1mm C. 2mm D. 2.5mm E. 3mm

作者: tihaiku 人气: - 评论: 0

问题悬空式桥体与牙槽嵴黏膜之间应留有的间隙为

选项 A. 0.5mm B. 1mm C. 2mm D. 2.5mm E. 3mm

答案 E

解析烤瓷全冠牙体预备时，颊侧肩台宽度为1mm。牙体各轴壁预备出金属厚度的间隙约0.5mm,以及瓷的厚度0.85?1.2mm。前牙切端或后牙拾面应至少预备出2.0mm的间隙。悬空式桥体:桥体的龈面与牙槽嵴不接触，距牙槽嵴顶有约3_以上的空隙，且桥体龈面呈凸圆形，利于食物流通而不积聚，自洁作用较好，故又称为卫生桥。

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文件: /twcms/kongphp/cache/cache_redis.class.php

位置: 第 85 行

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悬空式桥体与牙槽嵴黏膜之间应留有的间隙为A. 0.5mm B. 1mm C. 2mm D. 2.5mm E. 3mm

相关内容：式桥,牙槽,黏膜,应留,间隙

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