题目内容
下列与人工牙折断无关的是
2021-11-10
A.覆拾过大,前伸运动时撞击
B.塑料牙盖嵴部未磨粗糖、单体溶胀不够
C.人工牙与基托的接触面被分离剂污染
D.覆盖过大,前伸运动时撞击
E.人工牙的质童不好
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