RESULTS: ① The proportion of third molars root furcation in normal group was significantly higher than the abnormal group in any position ( P < 0.001).
结果:①在任何方位,正常牙冠组的牙根分叉机率均显著高于牙冠发育不良组(P
the investigation of the root furcation morphology and the incidence of the root trunk concavities of molars with severe periodontitis
因重度牙周炎拔除的磨牙根分叉形态测量及根柱凹陷发生率的调查
because of the complication and variation in anatomy and cause, the treatment of root furcation lesion was very difficult.
根分叉区病变因其局部解剖复杂与多变,致病因素多种多样,病变破坏程度不同,治疗方法虽多但疗效不满意。
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