High prevalence of taurodontism in North China and its relevant factors: a retrospective cohort study.

Objective: The purpose of this study was to investigate the prevalence and relevant factors of taurodontism in North China.

Methods: We retrospectively analysed the cone beam computed tomography (CBCT) of 1025 patients (496 male and 529 female) aged between 10 and 59 years. The crown-body/root (CB/R) ratios of the maxillary and mandibular molars were measured.