Journal of Oral Medicine and Pain

Korean Academy of Orofacial Pain and Oral Medicine (대한안면통증구강내과학회)
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Joint Space Analysis Using Cone-beam Computed Tomography Imaging in Patients Diagnosed with Temporomandibular Joint Osteoarthritis and Occlusal Changes

  • Hyun-Jeong Park (Department of Oral Medicine, School of Dentistry, Chosun University) ;
  • Yo-Seob Seo (Department of Oral and Maxillofacial Radiology, School of Dentistry, Chosun University) ;
  • Jong-Won Kim (Department of Dentistry, Graduate School, Chosun University) ;
  • Sun-Kyoung Yu (Department of Oral Anatomy, School of Dentistry, Chosun University) ;
  • Ji-Won Ryu (Department of Oral Medicine, School of Dentistry, Chosun University)
  • Received : 2023.12.11
  • Accepted : 2023.12.15
  • Published : 2023.12.30
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Abstract

Purpose: This pilot study aimed to evaluate changes in joint space (JS) using cone-beam computed tomography (CBCT) images of patients diagnosed with temporomandibular joint (TMJ) osteoarthritis (OA) and to determine the association between occlusal changes and JS. Methods: CBCT images were used to measure the anterior, superior, and posterior JSs of the sagittal plane. The differences in JS values over time and between groups were compared. The percentage change in the anteroposterior position of the mandibular condyle between groups was also analyzed. Results: Thirty-four subjects (mean age=43.91±20.13), comprising eight males (23.5%) and 26 females (76.5%), were divided into 18 patients with no change in occlusion (NCO) and 16 patients with a change in occlusion (CO) during TMJ OA. The JS measurements of the study subjects showed a decrease in anterior joint space (AJS) values over time. There was no difference in JS measurements between the groups at T1 and T2. AJS values measured at T1 were lower in the CO group than in the NCO group, but the difference was not statistically significant. In both groups, a posterior position of the mandibular condyle was initially observed with high frequency. However, there is a statistically significant difference in CBCT images taken after occlusal changes, with an increased frequency of condyles observed in the anterior or central positions. Conclusions: In conclusion, AJS decreased over time in TMJ OA, and the mandibular condyle became more anteriorly positioned with occlusal changes. Therefore, clinicians should diligently monitor mandibular condyle morphology and JS using CBCT, along with the patient's clinical symptoms, to treat and control TMJ OA effectively.

Keywords

Acknowledgement

This study was supported by a research grant from Chosun University, 2020.

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