the aim of the study is to assess the correlation between the dental arch morphology and the articular eminence height and inclination by using CBCT scans of a sample of the Egyptian population.

Inclusion Criteria:

• • CBCT scans of adult Egyptian patients, males and females with ages starting from 18 till 45.

  • Scans of patients who have complete set of permanent dentitions (third molars are not considered), or at least not more than one tooth is missed in each arch.
  • CBCT scans with field of view that shows the full view of TMJ.

Exclusion Criteria:

• • CBCT scans of patients with fractures in the articular bone surfaces.

  • CBCT scans of patients with pathological lesions in the TMJ or articular eminence.
  • CBCT scans with artifacts that could interfere with the assessment of the articular eminence and dental arches.

A group of dentated Egyptian people