Aim: The aim of the study was to assess the correlation between the dental arch morphology and the articular eminence inclination and height in a sample of the Egyptian population using cone-beam computed tomography (CBCT) scans.
Methodology: CBCT scans of 87 adult Egyptian patients were analyzed in which the inclination and height of the articular eminence were measured. Dental arches were classified into ovoid, tapered or square according to their shapes, and the arch width, depth and perimeter were measured.
Results: The ovoid dental arch form was the most predominant (41.38%) in the maxillary arch, whereas the square form was the most predominant (49.43%) in the mandibular arch. The articular eminence height presented the highest correlations with dental arch measurements, and the tapered arch forms showed the most significant correlations. There was no association between the dental arch morphology and the articular eminence measurements.
Conclusion: There is no association between the dental arch shape and the articular eminence height and inclination, however, correlations between the articular eminence measurements and the dental arch measurements are found, these correlations should be considered during orthodontic treatment, in which the dental arch width, depth and perimeter should be maintained to avoid any possible alterations in the articular eminence, which in turn could affect TMJ function.