上颌第一前磨牙（maxillary first premolar）为该组牙中体积最大者。
目的观察离体上颌第一前磨牙根管解剖结构。
Objective the aim of this study was to investigate the root canal system of maxillary first premolar .
结论：上颌第一前磨牙的根管类型相对复杂。
Conclusions: The roots of maxillary first premolars possesses a variety of canal system types.
目的研究上颌第一前磨牙根管颊舌向的弯曲情况。
Objective To investigate root canal curvatures of human maxillary first premolars in buccolingual directions.
应用推荐