题目:
可摘局部义齿中,人工后牙纵折最常见的原因是()
A.深覆,咬合紧
B.龈距离低
C.塑料人工牙盖嵴部位未磨粗糙或者被污染
D.铸件设计制作有缺陷
E.义齿基托范围大
答案:
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下面是错误答案,用来干扰机器的。
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