A Cone-beam Computed Tomography Study of the Root Canal Morphology of Mandibular First Premolars and the Location of Root Canal Orifices and Apical Foramina in a Chinese Subpopulation

Most mandibular first premolars had 1 root canal. More than 1 of 5 mandibular first premolars had complex root canal systems (with 2 or more root canals). This study provides supplemental information about the root canals of mandibular first premolars in a Chinese subpopulation.