Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.
It involves complete extirpationof obliterated pulp tissue and intimate obturation of instrumentedcanals with synthetic inert materials such as gutta-percha.
透实验和扫描电镜观察对三种牙本质
结剂
，
其封闭性能。
, 
材料(如古塔珍珠)对仪器化的导管进行亲密
