牙冠延长术应用于后牙残根的临床研究

Clinical Report of Application in Residual Root of Molar Crown Lengthening Surgery

目的观察牙冠延长术应用于后牙残根保留的效果。方法选取远中缺损的后牙残根15颗,患者15例,应用牙冠延长术完成牙周软组织和牙槽骨硬组织的外科治疗,形成牙本质肩领,术后1周拆线,3个月后行桩核及冠桥修复。永久修复后2周复查,观察疗效。结果 15颗后牙残根无不适症状,术区牙龈颜色、形态和质地恢复正常,修复体无松动、脱落,基本恢复咀嚼功能,患者满意。结论牙冠延长术有利于后牙残根的保留和修复,但要注意适应证的选择。

Objective To observe the clinical effect of restoration of residual root of molar with crown lengthening surgery.Methods Fifteen residual roots were included in this study.Crown lengthening surgery was first conducted and then post-core crowns were fabricated in all the cases.Then clinical effects were evaluated.Results All cases succeeded.The color of the gingival margin looked normal and the crowns were in good periodontal condition.Conclusion Crown lengthening surgery is an effective method for the protection and restoration of residual root,but should be used properly.