四环素牙是后天形成的。孕期服用大量四环素也可以影响到新生儿的牙齿。。。

来源: 御用文人于 2013-04-07 09:47:26 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.