Maxillary Molar Root Number — MFDS Part 1 MCQ
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Correct answer: A — Maxillary first molar
The maxillary first molar typically has three roots: mesiobuccal, distobuccal and palatal. A literature review found three roots in 95.9% of these teeth. In contrast, the mandibular first and second molars usually have two roots, designated mesial and distal. The maxillary canine normally has one root, while the maxillary first premolar commonly has one or two roots rather than three. Anatomical variations and root fusion can occur, but they do not alter the typical morphology tested here. Therefore, A is the single best answer.
Reference: Cleghorn BM, Christie WH, Dong CCS. Root and root canal morphology of the human permanent maxillary first molar: a literature review. Journal of Endodontics. 2006;32(9):813-821. https://pubmed.ncbi.nlm.nih.gov/16934622/