Johal S
University of British Columbia.
J Can Dent Assoc. 2001 Apr;67(4):211-4.
A case report is presented regarding a maxillary first molar with 5 canals. The morphology is atypical because it is characterized by a single palatal root with 2 canals with separate orifices joining in the apical third. A literature review pertaining to the morphology of maxillary first molars is discussed. Modifications to the normal access opening and examination of the pulpal floor for additional canals are stressed.
本文报告一例上颌第一磨牙有5个根管的病例。其形态不典型,特点是腭根单一,有2个根管口,在根尖三分之一处合并。文中讨论了有关上颌第一磨牙形态的文献综述。强调了对正常开髓口的改良以及对髓室底进行检查以寻找额外根管的重要性。