下颌第一磨牙牙半切除术后固定修复的咀嚼功能评价

Evaluation of the masticatory function of fixed denture restoration after mandibular first molar hemisection

目的评价下颌第一磨牙牙半切除术后固定义齿修复的咀嚼功能恢复效果。方法选择26颗下颌第一磨牙牙根病变严重需行牙半切术的患者作为研究对象,术后冠修复患牙。以患牙修复前及同名牙为对照,检测患牙固定义齿修复1个月后的咀嚼功能。结果患牙固定义齿修复1个月时的咀嚼效率明显高于同侧修复前(P<0.01)。与同名牙相比,患牙固定修复1个月时的咀嚼效率差异无显著性(P>0.05)。结论采用牙半切术保留下颌第一磨牙远中根的修复可获得满意效果。

Objective：To evaluate the masticatory efficiency of fixed denture restoration mandibular first molar hemisec-tion. Methods：Twenty-six patients with mandibular first molar hemisection were treated with fixed dentures,and masticato-ry efficiency was assessed after using dentures for 1 months. The masticatory efficiency of the affected side teeth before res-toration and unaffected side served as the comparison. Results：Compared with affected teeth before restoration,the masti-catory efficiency after dentures for 1 month by affected teeth was significantly improved（P ﹤ 0. 01）,and was similar to that of the unaffected teeth（P ﹥ 0. 05）. Conclusion：The patients with tooth hemisection for fixed dentures have good masticato-ry function.