Comparison of magnetic resonance imaging findings in 880 temporomandibular disorder patients of different age groups: a retrospective study

Abstract

Background Magnetic resonance imaging (MRI) findings of temporomandibular joint (TMJ) in temporomandibular disorder (TMD) patients of different ages are still unclear. The aim of this study was to analyze and compare the characteristics of MRI features of TMJs in different age groups. Methods A total of 1760 TMJs from 880 patients were included in the study and divided into three groups: ≤ 18Y (n = 195, 14.89 ± 2.35Y); 19-30Y (n = 475, 24.09 ± 3.23Y); and > 30Y (n = 210, 41.73 ± 10.45Y). T2-weighted image (T2WI) of MRI was obtained to evaluate the relationship between age and disc morphology, the degree of disc displacement, joint effusion, joint movement and changes of condylar bone morphology. Data were analyzed by Pearson Chi square test and Spearman correlation coefficient. Results There was no statistical difference between left and right sides in all age groups. Except condylar morphology (χ2 = 0.943, P = 0.624), there were significant differences in the distribution of disc morphology, disc position, joint effusion and joint motion among different age groups (χ2 = 24.450, χ2 = 24.829, χ2 = 19.855, χ2 = 39.259, respectively). There were significant differences in the distribution of the degree of anterior disc displacement, condyle morphology and joint effusion in different types of disc morphology among the different age groups (except for joint effusion in > 30Y), among which the first two were significantly correlated with the disc morphology. Conclusions The morphology and position of the articular disc changed significantly with age, but the proportion of abnormal condylar bone remained about 50%. The greater the degree of disc folding, the more prone to bone abnormalities. Trial registration This study was retrospectively registered on 28/03/2022 and endorsed by the Ethics committee (LCYJ2022014).

Examination for the Factors Involving to Joint Effusion in Patients with Temporomandibular Disorders Using Magnetic Resonance Imaging

“…Therefore, there were more females than males in this study. The proportions of disc displacement and deformation were larger than that of normal disc placement or formation, and this tendency is similar to other reports [15,37]. Disc displacement was found in 88.5% of the TMJs investigated in this study.…”

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

“…In previous studies, the condylar height loss and the secondary mandibular growth disorder were found in adolescent ADDWoR patients [32][33][34] . However, the underlying cellular mechanism that may give rise to the TMJ cartilage growth retardation was unclear over time.…”

“…Three cubes in size of 210 x 210 x 210µm 3 were selected in the anterior, middle, and posterior subchondral bone regions. 3D reconstruction of the mandible was performed to measure condylar length, width, and ramus height 34 . The ramus height is measured by the vertical distance from the sigmoid notch to the midpoint of the condyle.…”

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

“…Joint effusion is the state of accumulation of joint fluid in the joint spaces and surrounding tissue [ 40 ]. Our present study found that there was a significant difference in the distribution of joint effusion in different types of disc morphology [ 25 ]. In this study, the proportion of participants without joint effusion in asymptomatic and symptomatic groups was 93.5% and 73.3%, respectively.…”

“…In this study, the disc morphology was divided into the following four types according to the degree of folding as shown in Fig. 2: biconcave, lengthened, contracture, and irregular [25]. 5) posterior disc displacement without reduction (PDDWoR) [28].…”