Jonker, Casper H, et al. “Root and Canal Morphology of the Maxillary First Molar: A Micro-Computed Tomography-Focused Review of Literature With Illustrative Cases. Part 1: External Root Morphology”. South African Dental Journal, vol. 79, no. 01, Mar. 2024, pp. 4-10, https://doi.org/10.17159/sadj.v79i01.16863.