Jonker, Casper H.L'Abbe, Ericka NoelleVan der Vyver, Petrus JacobusZahra, DanielOettlé, Anna C.2024-08-072024-08-072024-07Jonker, C.H., L'Abbé, E.N., Van der Vyver, P.J. et al. 2024, 'A micro-computed tomographic evaluation of maxillary first molar root canal morphology in Black South Africans', Journal of Oral Science, vol. 66, no. 3, pp. 151-156, doi : 10.2334/josnusd.24-0074.1343-4934 (print)1880-4926 (online)10.2334/josnusd.24-0074http://hdl.handle.net/2263/97480DATA AVAILABILITY STATEMENT : Data generated during the current study are available from the corresponding author on reasonable request.PURPOSE : This study was conducted to investigate the root canal anatomy of maxillary first molars in Black South Africans. METHODS : Micro-computed tomography was used to investigate 101 maxillary first molars (53 teeth from the right, 48 from the left; 50 male and 51 female teeth). The number of root canals in each tooth was determined, and the relationship between side, sex and age was analyzed using chi-squared test. To determine intra- and inter-observer reliability, Cohen’s kappa coefficients were calculated. RESULTS : Intra- and inter-rater agreements of 96.92% and 98.08% were achieved, respectively. Most teeth contained either three or four canals, but a second, third and fourth mesio-buccal canal was found in 60.39%, 5.94% and 0.99% of teeth, respectively. The disto-buccal and palatal roots contained predominantly single canals, but additional canals were noted in 2.97% and 1.98% of teeth. Four canals were common in females and teeth on the right side often contained a second mesio-buccal canal. However, the prevalence of a third mesio-buccal canal was higher in males than in females. CONCLUSION : The teeth studied showed diversity and variations between sexes and arch sides. These findings will aid clinicians in endodontic treatment and will be applicable for educational purposes.en© 2024 Nihon University School of Dentistry. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.Additional canalsC-shaped canalsMicro-CTNumber of canalsSecond mesio-buccal canal (MB2)Third mesio-buccal canal (MB3)Fourth mesio-buccal canal (MB4)SDG-03: Good health and well-beingCone-beam computed tomography (CBCT)Article