Volumetric analysis of normal condyles and those with disc displacement with reduction in the Indonesian population: A CBCT study

Abstract

Purpose Disc displacement can cause resorption of the head of the condyle and affect its volume. This study analysed the volume of normal condyles and those with disc displacement with reduction (DDR) in cone-beam computed tomography (CBCT) scans from the Indonesian population. Materials and Methods This study analysed 56 condyles (26 normal and 30 with DDR) from patients who visited the Oral and Maxillofacial Radiology Unit after being referred from the Prosthodontics Unit at Dental Hospital Universitas Padjadjaran from December 2020 to February 2021. Samples were divided into 2 groups (normal and DDR left and right-side condyles) based on the DC/TMD Axis 1 form through the clinical examination results. Both sample groups were exposed to CBCT radiation. The CBCT imaging results in the Digital Imaging and Communications in Medicine format were exported to the open-source ITK-SNAP format to determine condyle volume. Volumetric data from the cortical and trabecular areas of the right or left side condyles were arranged by sex. The independent t-test was used to determine the significance of differences with IBM SPSS version 21.0. Intra- and inter-observer reliability and validity were tested before determining the volume of the condyles. Results Normal condyles and DDR condyles showed significant differences in volume ( P <0.05). Significant differences were also seen in cortical ( P =0.0007) and trabecular ( P =0.0045) volumes. There was a significant difference in condylar volume based on sex. Conclusion The normal condyle volume was significantly different from the DDR condyle volume in both sexes.

Comparison of imaging findings of 714 symptomatic and asymptomatic temporomandibular joints: a retrospective study

“…Although there was a poor correlation between condylar changes (as observed on CBCT images), pain, and symptoms in TMJ OA [ 30 ]. Many studies have confirmed the correlation between condylar bone changes and articular disc displacement and believed that it is related to TMD symptoms [ 31 , 32 ]. Consistent with previous research results, normal condylar morphology was 75.1% in the asymptomatic group and 48.9% in the symptomatic group in this study.…”

Divergent chondro/osteogenic transduction laws of fibrocartilage stem cell drive temporomandibular joint osteoarthritis in growing mice

“…The 3D measurement started from condylar image segmentation and reconstruction based on previous studies. 42 , 43 The superior contour of the condyle was determined as the first radiopaque point found in the upper articular area. The lowest point of the sigmoid notch is the marker point of the bottom of the condyle.…”