牙根分叉暴露下颌磨牙的修复与临床观察

目的：研究采用消除牙根分叉的方法,对牙根分叉暴露下颌磨牙进行保存治疗,观察其疗效。方法：对84例牙根分叉暴露的下颌磨牙进行根管充填,牙根分叉病变在Ⅰ～Ⅱ度者行哑铃形冠修复,牙根分叉病变在Ⅲ～Ⅳ度者,若牙周袋〈4mm,松动度〈Ⅱ度者可分根后行2个独立铸造冠修复,若近中或远中根有一根松动度〉Ⅱ度或有深牙周袋〉4mm;则拔除有病变的一根,保留情况尚好的另一根,与邻牙联合行铸造冠桥修复。结果：84例患者中有24例行哑铃形冠修复,32例分根后行2个铸造冠修复,28例分根后拔除病变的半牙,与邻牙行联合冠桥修复,其中咀嚼功能良好者为90.5%。结论：牙根分叉暴露的下颌磨牙,采用消除牙根分叉的方法治疗后,可有效地保留患牙的咀嚼功能。

Repair and clinical observation of exposure of the mandibular molar root bifurcate

Objective: To study on root furcation exposure of mandibular molars conservative treated using method of elimination of the root furcation, observation of its curative effect. Methods: In 84 cases of root furcation exposure of mandibular molar root canal filling, root furcation lesions in the Ⅰ-Ⅱ line of dumbbell shaped crown, root furcation lesions in Ⅲ-Ⅳdegree, if periodontal pockets<4 mm, loose degree <Ⅱ degree could be divided into two separate roots after casting crown. If the mesial or distal root had a loose degree>Ⅱdegree or had deep periodontal pockets>4 mm; Then removed the lesions, remain the better one with the adjacent teeth combined to cast crown and bridge. Results: In 84 cases,there were 24 cases of dumbbell shaped crown repair, 32 cases of root divided after two casting crowns, 28 cases of root after removal of lesions of the half tooth, with adjacent rows of teeth with crown and bridge repair, in which the masticatory function good accounted for 90.5%. Conclusion: The root furcation exposure of mandibular molar, use the method of the elimination of the root furcation, after treatment can effectively retain the teeth chewing function.