题目内容 (请给出正确答案)
提问人:网友c********1 发布时间:2022年4月18日 23:08
[单项选择题]

牙周病病因学中下列哪一个不是外源性因素()

A.口腔卫生

B.触点不良

C.创伤牙合

D.营养不良

E.食物嵌塞

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