CBCT evaluation of root canal morphology and anatomical relationship of root of maxillary second premolar to maxillary sinus in a western Chinese population

Abstract

Background To evaluate the root anatomy, root canal morphology and the anatomical relationship between the roots and maxillary sinus of maxillary second premolars by CBCT in a western Chinese population. Methods A total of 1118 CBCT scans of the maxillary second premolars were collected from West China Hospital of Stomatology, Sichuan University. Information below were measured on axial, coronal and sagittal sections, recorded and evaluated properly: the number of roots and canals, the morphology of canal system classified by Vertucci standard, the inter-orifice distance of canal orifices, the curvature of each canal and the distance from root tip to maxillary sinus floor. Results Among the 1118 teeth, 94.2% (1053) are single-rooted and 55.1% (616) have one canal. Type I (55.1%) is the commonest root canal morphology followed by Type II (31.9%). The mean inter-orifice distance (IOD) for multi-canal teeth ranging from 2.72 ± 0.32 to 3.41 ± 0.11 mm. Of 1622 canals, 38.8% (630) curvature are mesiodistal and 30.9% (501) are straight canals. The distance from root tip to maxillary sinus floor increased with age and the mean distance of single-rooted ones is 2.47 ± 3.45 mm. Conclusions All kinds of canal morphology category can be detected in maxillary second premolars. The IOD might be a predictable factor for root canal morphology. Roots of maxillary second premolars are related to maxillary sinus which should be treated carefully.

Periapical Lesions and Missed Canals in Endodontically Treated Teeth: A Cone-Beam Computed Tomographic Study of a Chinese Subpopulation

“…It is widely recognized in the dental profession that molars exhibit intricate root canal anatomy, which represents a significant obstacle for successful endodontic treatment [ 24 , 33 ]. The elaborate structure of these teeth enhances the probability of MC and persistent infections relative to other types of teeth [ 29 , 30 ]. Among posterior teeth that have undergone endodontic treatment in the present study, excluding third molars, the maxillary first molars had the highest frequency of MC (65.7%), which is consistent with findings from Baruwa et al (59.6%), do Carmo et al (55.2%), Costa et al (54.5%), Karabucak et al (44.2%), and Mashyakhy et al (40.6%) [ 18 – 22 ].…”

Evaluación de proximidad de raíces dentarias superiores al seno maxilar mediante tomografía computarizada de haz cónico y su importancia en Endodoncia

“…Ya que el acceso operatorio, instrumentación y el uso de irritantes endodónticos se deben manejar en una zona con un límite de espacio reducido. Con mayor riesgo de perforación y mayor probabilidad de causar patologías sinusales (23) (24). Profesionales y estudiantes de odontología desconocen la tomografía computarizada de haz cónico, como un medio diagnóstico y por ello es importante realizarlo antes un procedimiento endodóntico.…”

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

“…Tooth morphology involves varies aspects such as root length, canal variations, root furcation and the like. There are reports analyzing tooth characteristics within individual nations [4,6,12]; however, limited studies focus on detailed analysis of thorough investigation on these characteristics, and it is essential to summarize data within individual nations. Therefore, we are aimed to carry out an in-depth investigation among Chinese population.…”