正常牙冠表面釉质最厚处厚度为() ["A．1～2mm","B．3～3.5mm","C．2.5～3mm","D．2～2.5mm","E．3.5～4mm"]
人体中矿化程度最高的组织是() ["A．牙骨质","B．牙本质","C．牙釉质","D．长骨骨干","E．以上都不对"]
修复治疗中牙体预备最常用的器械是() ["A．裂钻","B．砂纸圈","C．倒锥钻","D．砂轮","E．金刚砂车针"]
乳牙牙髓病和根尖周病的治疗目的是什么?
试述乳牙龋病的临床特点。
简述多生牙对牙列发育的影响及处理原则。
