Akademik Veri Yönetim Sistemi
IX-INTERNATIONAL ANTALYA SCIENTIFIC RESEARCH AND INNOVATIVE STUDIES CONGRESS, Antalya, Türkiye, 20 - 23 Kasım 2025, ss.192, (Özet Bildiri)
Introduction and Purpose: Temporomandibular joint (TMJ) ankylosis is a severe pathology that causes restriction of mastication function and marked facial asymmetry. Following ankylosis, the redistribution of functional load toward the contralateral joint may gradually induce compensatory osteoarthritic changes. The aim of this pilot study is to evaluate the development of osteoarthritis in the contralateral joint of patients with TMJ ankylosis using panoramic radiography and cone-beam computed tomography (CBCT). Materials and Methods: 18 patients diagnosed with TMJ ankylosis between 2016 and 2025 were included in the study. Panoramic radiographs of all patients were retrospectively evaluated, and in 5 of these patients, available CBCT scans were additionally assessed. The parameters of osteophyte formation, subchondral bone cyst (SKK), erosion, and generalized sclerosis were examined by two observers at two different sessions using a blinded evaluation approach. Inter- and intra-observer agreement was analyzed using Cohen’s Kappa coefficient. Results: On panoramic evaluation, osteophytes were detected in 5 patients (27.8%) ipsilaterally and 1 patient (5.6%) contralaterally; SKK in 2 patients (11.1%) ipsilaterally and 5 patients (27.8%) contralaterally; erosion in 2 patients (11.1%) ipsilaterally and 4 patients (22.2%) contralaterally; and generalized sclerosis in 2 patients (11.1%) ipsilaterally and 3 patients (16.7%) contralaterally. CBCT evaluation revealed osteophyte formation in 2 patients (40%) ipsilaterally and 3 patients (60%) contralaterally; SKK in 1 patient (20%) ipsilaterally and 2 patients (40%) contralaterally. Erosion was observed only ipsilaterally (1 patient, 20%). The inter- and intra-observer agreement was excellent for OPG (κ = 1.00) and good-to-excellent for CBCT (κ = 0.61–1.00). These findings suggest that asymmetric biomechanical loading following ankylosis may trigger compensatory remodeling and osteoarthritic changes in the contralateral TMJ. TMJ ankylosis may alter the distribution of functional stress by restricting joint motion, predisposing the contralateral side to degenerative changes. Due to the limited sample size, this study serves as a preliminary investigation providing early insights into the potential etiopathogenetic relationship between TMJ ankylosis and osteoarthritis. Key Words: Temporomandibular joint; Ankylosis; Osteoarthritis; Cone Beam Computed Tomography