A 3D Evaluation of Condyle Position of Skeletal Class I and III Patients: A Cone-Beam Computed Tomography Technique

Arman  Saeedivahdat; Tohid  Babaei; Nadereh  Ariamanesh; Hadi  Monzavi; Pouya  Badri; Ali  Nokhbeh

doi:10.18502/fbt.v11i2.15337

Arman Saeedivahdat Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
Tohid Babaei Department of Periodontology, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
Nadereh Ariamanesh Department of Restorative Dentistry, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
Hadi Monzavi Department of Prosthodontics, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
Pouya Badri Department of Orthodontics, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
Ali Nokhbeh Department of Periodontology, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran

DOI: https://doi.org/10.18502/fbt.v11i2.15337

Keywords: Temporomandibular Joint; Skeletal Class I; Skeletal Class III; Cone-Beam Computed Tomography.

Abstract

Purpose: The present study aims to assess the differences in the condyle position for two skeletal classes using Cone-Beam Computed Tomography (CBCT) reconstructions for both sides and genders.

Materials and Methods: In this cross-sectional descriptive study, the CBCT images of 96 patients (20-60 years) were assessed. The participants were divided according to their Angle malocclusion classifications (Angle Classes I and III). The variables of the Anterior-Posterior position of the Condyle (APC), condylar angle in the axial plane (ACA), the Lateral Position of the Condyle in the axial plane (LPC), the Vertical Position of the Condyle (VPC), condylar angle in coronal dimension (CCA), and the difference of APC and VPC on both sides were measured. The measurements were analyzed using a one‑way ANOVA and Tukey’s post hoc test.

Results: The variables of APC, LPC, ACA, VDC, and the difference of the APC on both sides in the two skeletal classes were similar. The VPC and CCA were greater in Class III than in Class I. All variables representing the 3D position of the condyle were similar in men and women, as well as on the right and left in both skeletal classes, I and III.

Conclusion: Based on the 3D evaluation results of the condylar position, the skeletal classes III and I differed in the VPC and CCA; however, for the rest variables, there were no statistical differences.