摘要
目的:采用锥形束CT(CBCT)分析下颌第一前磨牙非单根管系统的解剖形态。方法:选取20颗具有非单根管系统下颌第一前磨牙离体牙标本,CBCT扫描数据,使用三维重建软件分析下颌第一前磨牙牙根的数目、根面沟情况及根管形态。结果:20颗下颌第一前磨牙非单根管系统中,单根及融合单根17颗(85.0%)、双根3颗(15.0%)。根面沟发生率为95.0%,好发于近中舌侧、舌侧。根管形态发生率分别为双根管Ⅲ型(1-2-1)25.0%、Ⅴ型(1-2)5.0%,三根管Ⅷ型(3-3)15.0%、Ⅸ型(3-4)型5.0%、C形9例45.0%、环形1例5.0%,其中C形发生率最高。结论:下颌第一前磨牙非单根管系统解剖形态复杂。
Objective：To investigate the complicated canal morphology of mandibular first premolar using conebeamCT（CBCT）. Method：20 CBCT images of complicated canal mandibular first premolar were selected .The images wereanalyzed with 3D reconstruction software for the number and morphology of root, groove and canal. Result：17 single orfused root（85.0 %） and 3 double-root（15.0 %） teeth were record. The incidence of groove in complicated canal was 95.0%, and usually locate in mesio-lingual and lingual side. The canal configuration of mandibular first premolar was typeⅢ：25.0 %,typeⅤ：5.0 %,typeⅧ：15.0 %,typeⅨ：5.0 % and C-shaped canal：45.0 %,circumferential canal：5.0 %. The highestincidence of canal configuration is C-shaped cannal. Conclusion：The canal system anatomy of mandibular first premolaris complex.
出处
《临床口腔医学杂志》
2015年第6期337-339,共3页
Journal of Clinical Stomatology
基金
上海交通大学医学院科技基金(14×510062)
