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Updated: Nov 6, 2025

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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
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The presence of maxillary fourth molar in the Sri Lankan toque monkey (Macaca sinica aurifrons)
Dinesh E Gabadage1, Kalangi Rodrigo2, Kelum N Manamendra-Arachchi3
1Biodiversity Conservation Society, Nugegoda, Sri Lanka.
Journal of Medical Primatology
|May 8, 2021
Abstract:
We describe the presence of fourth molar teeth in the upper jaw of a subspecies (Macaca sinica aurifrons) of the endemic toque macaque of Sri Lanka. Compared to the first three molars, supernumerary ones were smaller by more than 50%, showed four cuspids in the crowns, and had three roots. This observation contributes to knowledge of orthodontic anomalies presence in primate populations while spotlighting the importance of osteological observation.

