Root and canal morphology of mandibular premolars using cone-beam computed tomography in a Chilean and Belgian subpopulation: a cross-sectional study.

Objective: To describe mandibular premolar root and canal morphology and its variability in Chilean and Belgian samples using cone-beam computed tomography.

Methods: A cross-sectional and descriptive study was conducted. A total of 402 mandibular premolars were examined using cone-beam computed tomography images of Chilean and Belgian patients.