Analysis of Anterior Permanent Dentition in Chinese population via Cone-beam Computed Tomography

Abstract

Abstract Purpose Investigation of roots and canals is crucial in clinical assessment and treatment. Morphologies such as root length, cemento-enamel junction curvature (CEJ-C), root furcation and canal variations are important factors yet remain to be discussed in depth. Methods In this retrospective study, we look into 4309 anterior teeth from 401 patients via cone-beam computed tomography (CBCT) in Chinese population, attempting to summarize the morphological characteristics of maxillary and mandibular anterior teeth. Results Maxillary and mandibular canines are observed with elevated root length compared with corresponding incisors (p < .0001), while those of mandibular central and lateral incisor varied with significant difference (p < .0001). The CEJ-C reveals significant increasement around incisors than canines in maxilla (p < .0001). Root furcation is detected in mandibular canines and lateral incisors. Moreover, all types of Vertucci’s classification are noticed with two other new types. Conclusions The current findings help to optimize the root morphological understanding of Chinese population especially in endodontics. Moreover, CEJ-C facilitates clinical aesthetic interpretation and treatment in implantology and prosthodontic. However, further study should be carried out to investigate morphologies of posterior dentition.