釉质发育不全是因为 ( )A.牙萌出后患儿缺少维生素所致 B.牙发育期间，全身或局部因素所致 C.牙萌出后患儿缺钙所致 D.牙萌出后患儿营养...

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问题釉质发育不全是因为 ( )

选项 A.牙萌出后患儿缺少维生素所致 B.牙发育期间，全身或局部因素所致 C.牙萌出后患儿缺钙所致 D.牙萌出后患儿营养不良所致 E.牙萌出后患儿高热所致

答案 B

解析

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