外伤性龈下前牙残根修复效果的临床评价

Clinical evaluation of restoration on traumatic subgingival residual roots of anterior teeth

目的探讨对外伤性龈下前牙残根行牙冠延长术的手术方法、术后修复时间、适应证及美观效果。方法对68例106颗龈下前牙残根行后牙冠延长术修复治疗，用改良Ryge标准动态评价牙龈、牙周情况，用Kay牙齿关学分类标准评价治疗前后的美观效果。结果牙冠延长术结合修复治疗后，68例患者牙齿的美观效果均达到ClassⅡ—Ⅰ（化妆）或ClassⅡ—Ⅰ标准。修复后2周复查，9．8％患牙的牙龈有较明显的炎症；经治疗及口腔卫生保健指导后，97．2％的患牙在修复6个月以上复查，牙龈、牙周健康状况良好。结论通过正确的适应证选择、准确的设计方案、细致的手术操作、术后足够的牙龈恢复期及规范的口腔卫生保健，牙冠延长术结合修复治疗可获得前牙修复美观效果。

Objective To evaluate methods and clinical performance of crown lengthening surgery for aesthetic restoration improvement of short anterior teeth. Various surgery methods, proper restoration time after surgery, and indications for crown lengthening surgery were discussed. Methods Crown lengthening surgery and were applied prosthetic treatment d to 106 short anterior teeth of 68 cases. Modified ryge criteria were used to assess the gingival health after treatment. Restoration results before and after treatment were evaluated by use of Kay altered dental esthetics classification. Results When patients were re - examined after restoration of two weeks, obvious inflammation was found in 9. 8% teeth. After providing the treatment and the follow - up period. After treatment, all of 68 cases met Kay dental esthetics classification Class Ⅱ - Ⅰ（cosmetic） or Class Ⅱ - Ⅰcriteria. Conclusions Right selection of indications, accurate restoration design, delicate surgery operation, enough recover period for the gingival after surgery, and proper oral hygiene training method, all contribute to the satisfactory aesthetic restoration of anterior teeth.