上颌第一前磨牙影像学根管形态分析

目的采用锥形束CT(CBCT)探讨上颌第一前磨牙根管的解剖形态,了解其常规形态及变异形态。方法收集176例患者的双侧上颌第一前磨牙的CBCT影像学资料,CBCT资料使用NNT软件进行扫描观察,探究根管类型和根管分布情况。结果 352个上颌第一前磨牙根管分型:Ⅰ型30例(8.52%),Ⅱ型92例(26.1%),Ⅳ型225例(63.9%),Ⅵ型3例(0.85%),Ⅷ型2例(0.56%)。结论上颌第一前磨牙牙根形态多样,且根管形态的类型较为复杂。通过影像学诊断方法更加深入的了解其解剖形态,对临床治疗具有重要意义。

Radiological analyses of root canal morphology of maxillary first premola

Objective To investigate the canal morphology of maxillary first premolar using cone-beam CT ( CBCT) and to know its generic and variant forms. Methods 106 CBCT images of maxillary first premolar were selected. The images were analyzed with NNT software to investigate the type and distribution of the root canal. Results The canal configuration of maxillary first premolar:typeI 30 cases (8.52%), typeⅡ92(26.1%), typeIV 225(63.9%), typeVI 3(0.85%), typeⅧ2(0.56%). Conclusion Understanding the various morphology of the roots and complex root canals of maxillary first premolars, is of great value for the diagnosis and clinical treat-ment of root canal morphology.