Three-rooted unilateral maxillary first premolar diagnosed by CBCT:A case report / 实用口腔医学杂志

Most of the maxillary first premolar are single-rooted,there are also two-rooted and three-rooted ones.A case of three-rooted maxillary first premolar was diagnosed by CBCT.CBCT has the advantage in the observation of the variation root number,root canal bending and the variation of root canal morphology.