


Volume 20 No 20 (2022)
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Best MRI Sequences in Detection of Temporomandibular Joint Disorders
Hashem Sharifian, Zohreh Sadeghi , Shoresh Barkhordari
Abstract
Temporomandibular joint involvement is one of the most complications in patients attending dental
clinics. Nowadays, MRI is commonly used to diagnose temporomandibular joint pain and movement
disorders and this study was performed to compare finding of MRI sequences in distinguishing TMJ disorders.
In a prospective design, 44 TMJ of 23 patients (only one TMJ is evaluated in 2 patients) included in the study.
After clinical examination by a Facial and Jaw Surgeon, MRI sequences include T1, T2, PD and dynamic (GRE)
were obtained and assessed by a skilled radiologist. Evaluation of internal derangement and osteoarthritis
were the main objects. Mean ±SD of age was 40.38± 17.87 years. According to disk position and its shape,
internal derangement was reported in 21 joints (47.7%) that PD was judicable in 43 joints (97.7%) and T2 in
42 joints (95.5%). Osteoarthritis was observed in 14 joints (31.8%) that T2 and PD were judicable in more
than 95% of joints and degenerative changes were seen in 12 joints (27.3%) in T2 study and 11 joints (25%) in
PD image. It seems that PD and T2 sequences have high ability to show TM joint structure and surrounding
tissues; while T1 and dynamic sequences have less diagnostic value
Keywords
MRI, Sequences, Temporomandibular joint, Internal derangement, Osteoarthritis
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