42例下颌磨牙分根保存体会

Clinical application of conservative prosthetics of mandibular molar by separating roots and crowns in 42 cases

目的探讨颊舌向纵裂的残冠及髓室底穿保存后疼痛牙的保存治疗方法,观察其临床治疗效果。方法本院口腔科2008年6月至2010年12月对42颗患牙行完善根管治疗、分根保存固定及全冠修复,观察治疗效果。结果本组42例患者治疗总有效率为85.71%(36/42),疗效满意,下颌6治疗效果明显优于下颌7(P<0.05),差异有统计学意义。结论在正确选择病例的基础上,对其采取完善根管治疗、颊舌向分根或拔除一根后行全冠桥修复的保存治疗,可取得满意疗效,对于下颌6牙分根保存效果更好,值得临床推广使用。

Objective To investigate the clinical therapeutic effect of conservative prosthetics on the posterior teeth with buccolingual crack and the molars with perforation in pulp chamber floor.Methods From June 2008 to December 2010,a total of 42 posterior teeth with buccolingual crack on pulp floor were done with root canal therapy,the root was separated,meanwhile,complete coronal restoration was also done,then there was an observation on the clinical therapeutic effect for these in the our department.Results Among these 42 patients,the total effective rate was 85.71%（36/42）.That was satisfactory.The first molar was better than the second molar in clinical efficacy.There were significant differences（P0.05）.Conclusion It is a safe and effective method on the posterior teeth with buccolingual crack on pulp floor with preservation restoration through separated root,there is a good clinical application prospected on its application.