试题与答案

饮水加氟防龋效果乳牙比恒牙低是因为（） A.氟不容易与乳牙牙釉质结合 B.恒牙矿化时

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题型：单项选择题 A1型题

题目：

饮水加氟防龋效果乳牙比恒牙低是因为（）

A.氟不容易与乳牙牙釉质结合

B.恒牙矿化时孕妇摄氟不足

C.氟不能完全通过胎盘屏障

D.恒牙矿化程度高于乳牙

E.乳牙矿化时间早于恒牙

答案：

参考答案：D

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