题目内容:
根管充填时紧密的充填材料应位于
A.根尖(root apex) B.根尖孔(apical foramen) C.根尖牙骨质牙本质交界(cemento-dentinal junction) D.根尖分歧(apical ramification) E.以上均不是
参考答案:
根管充填时紧密的充填材料应位于
A.根尖(root apex) B.根尖孔(apical foramen) C.根尖牙骨质牙本质交界(cemento-dentinal junction) D.根尖分歧(apical ramification) E.以上均不是