Skeletal Divergence and Condylar Asymmetry in Patients with Temporomandibular Disorders (TMD): A Retrospective Study

Biomed Res Int. 2021 Sep 24:2021:8042910. doi: 10.1155/2021/8042910. eCollection 2021.

Abstract

Introduction: This study was aimed at evaluating the association between vertical skeletal patterns, condylar height symmetry, and temporomandibular disorders in adults.

Methods: The study sample consisted of 200 patients (ages 18-30 years old) retrospectively recruited: 100 with temporomandibular disorders (TMD) and 100 without TMD (control), diagnosed by Diagnostic Criteria for the Temporomandibular Disorders (DC/TMD). For each subject, skeletal divergence was assessed on lateral cephalograms, and condylar height symmetry was evaluated by orthopantomography (Habets' method).

Results: Subjects with temporomandibular disorders showed a strong association with condylar asymmetry (p < 0.0001) and, for the skeletal pattern variables, hyperdivergence (p < 0.001). A correlation with the female sex was also found (p < 0.04), while there was no difference in terms of age in the 2 groups (p > 0.29).

Conclusions: Although it does not imply a direct cause-and-effect relationship, the present study suggests condylar asymmetry and hyperdivergent skeletal pattern are more likely to be associated with a higher risk of temporomandibular disorder joint diseases in adult patients.

MeSH terms

  • Bone and Bones / diagnostic imaging
  • Bone and Bones / pathology*
  • Cephalometry
  • Female
  • Humans
  • Male
  • Radiography, Panoramic
  • Retrospective Studies
  • Temporomandibular Joint Disorders / diagnostic imaging
  • Temporomandibular Joint Disorders / pathology*
  • Young Adult