Methods :35out -patients were treated with gin-givoplasty or gingivectomy accordi ng to their symptoms. 方法:35例门诊患者依据病情不同分别采用牙龈成形术、牙龈切除术。
Methods Peri-implantitis was treated using four methods (1)essential treatment, (2)gingivectomy, (3)flap operation, (4)guided bone regeneration(GBR). 方法诊断为种植根周围炎者37例进行以下治疗：(1)常规治疗，(2)眼切术，(3)翻瓣术，(4)引导骨组织再生术。
Abstract : Abstract：Objective To compare the restorative effects of crown lengthening surgery and gingivectomy on dowel crown of deep-seated subgingival teeth fracture. 摘要 ： 摘要：目的 比较牙冠延长术与牙龈切除术用于残根残冠桩冠修复中的疗效。
Keywords CO 2 laser gingivectomy Histologic change; 激光龈成形术;组织学变化;
