Methods Separating roots was used for the conservative prosthetics of the molars residual roots and crowns which were selected. All these must be done after excellent root canal therapy.
2
方法对下颌后牙残根、残冠累及根分叉病变的24个患牙，采用分根法作保存修复。
Methods Separating roots was used for the conservative prosthetics of 24 mandibular posterior teeth with furcation involvement.
3
目的比较根面平整一次法和四分法治疗慢性牙周炎的临床疗效。
Objective To evaluate the clinical effects of one-shot and quadrant root planing on chronic periodontitis.
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