IADR Abstract Archives
Clinical and imaging characteristics of osteoarthritis of the temporomandibular joint
Objectives: One of the most common temporomandibular disorders (TMD) is osteoarthritis of the temporomandibular joint (TMJ OA). It is diagnosed according to "Diagnostic Criteria for Temporomandibular Disorders" (DC/TMD) protocol, accompanied by an imaging test (Cone Beam CT, CB-CT). The objective of this study is to determine the clinical and imaging characteristics of Chilean patients with TMJ OA.
Methods: An observational, descriptive and cross-sectional clinical pilot study was conducted. The sample consisted of 5 participants over 18 years of age, patients of the Dental Clinic, Faculty of Dentistry, University of Chile. They were examined and diagnosed with TMJ OA according to axis I of the DC/TMD validated in Spanish and CB-CT (Planmeca ProMax3DMid). This study is part of a line of research that will evaluate a new treatment for this disease.
Results: The 5 participants were female (mean age: 46.2 ± 21.4). The average of maximum unassisted mouth opening (MAB) was 43.4 ± 7.6 mm. 40% presented MAB<40 mm. The mean joint pain on palpation on the Numerical Scale (NRS), in the left TMJ was 5.9 ± 2.73, and in the right TMJ was 3.5 ± 3.84. Most of the patients presented coarse crepitus (60%).
Regarding the bone characteristics, the highest frequency present in the condyle was the osteophyte (67%) and in the mandibular fossa was sclerosis (57%). When classifying by severity according to Moystad et al protocol (2), four TMJs had a total score of mild abnormality, five TMJs had moderate abnormality, and one TMJ was classified as severe abnormality.
Conclusions: Chilean patients with TMJ OA present clinical functional limitation and imaging signs of bone degeneration in different degrees of severity. More studies are needed to assess the efficacy of new treatments aimed at improving these characteristics.
Methods: An observational, descriptive and cross-sectional clinical pilot study was conducted. The sample consisted of 5 participants over 18 years of age, patients of the Dental Clinic, Faculty of Dentistry, University of Chile. They were examined and diagnosed with TMJ OA according to axis I of the DC/TMD validated in Spanish and CB-CT (Planmeca ProMax3DMid). This study is part of a line of research that will evaluate a new treatment for this disease.
Results: The 5 participants were female (mean age: 46.2 ± 21.4). The average of maximum unassisted mouth opening (MAB) was 43.4 ± 7.6 mm. 40% presented MAB<40 mm. The mean joint pain on palpation on the Numerical Scale (NRS), in the left TMJ was 5.9 ± 2.73, and in the right TMJ was 3.5 ± 3.84. Most of the patients presented coarse crepitus (60%).
Regarding the bone characteristics, the highest frequency present in the condyle was the osteophyte (67%) and in the mandibular fossa was sclerosis (57%). When classifying by severity according to Moystad et al protocol (2), four TMJs had a total score of mild abnormality, five TMJs had moderate abnormality, and one TMJ was classified as severe abnormality.
Conclusions: Chilean patients with TMJ OA present clinical functional limitation and imaging signs of bone degeneration in different degrees of severity. More studies are needed to assess the efficacy of new treatments aimed at improving these characteristics.