Magnetic resonance imaging of the TMJ disc in asymptomatic volunteers

Kircos, Louis T.; Ortendahl, Douglas A.; Mark, Alexander S.; Arakawa, M

doi:10.1016/0278-2391(87)90235-7

Cited by 289 publications

(105 citation statements)

References 11 publications

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“…The most commonly used imaging methods include Computed Tomography, Arthrography and Magnetic Resonance imaging (MRI). MRI is described as the gold standard in the literature [9][10][11][12][13]. Despite its many advantages, it suffers certain drawbacks, being expensive, having necessity of advanced equipment, longer time needed to use it for TMJ images, its restricted use in patients with claustrophobia, pacemakers and metallic prosthesis [14].…”

Section: Introductionmentioning

confidence: 99%

Assessment of TMJ Disorders Using Ultrasonography as a Diagnostic Tool: A Review

Kundu¹

2013

JCDR

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Section: Introductionmentioning

confidence: 99%

Assessment of TMJ Disorders Using Ultrasonography as a Diagnostic Tool: A Review

Kundu¹

2013

JCDR

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“…30 Furthermore, several MRI studies of adults have demonstrated disc displacement in about one-third of volunteers with no symptoms. [31][32][33][34] On the basis of the results of our study, the role of EVG in supporting the clinical diagnosis of ADDw/oR is of limited value. However, we have to consider the fact that patients selected for this study were Group IIa and IIc subjects according to the RDC/TMD.…”

Section: Discussionmentioning

confidence: 88%

Diagnostic concordance between MRI and electrovibratography of the temporomandibular joint of subjects with disc displacement disorders

Deregibus¹,

Castroflorio²,

Giorgi³

et al. 2013

Dentomaxillofacial Radiology

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Objectives: The aim of this study is to evaluate the diagnostic concordance of MRI and electrovibratography (EVG) of the temporomandibular joint (TMJ) in the diagnosis of articular disc displacement with reduction (ADDwR) and articular disc displacement without reduction (ADDw/oR). Methods: 50 patients (12 males, 38 females; mean age 37.46 6 15.64 years) with a hypothesis of disc displacement were selected. For each patient an MRI of the TMJ was performed. MRIs were evaluated sorting the 100 TMJs by kind of pathology (no pathology, ADDwR, ADDw/oR, and joint hypermobility). Afterwards, the patients had an EVG exam. The EVG exams were performed with vibration transducers over each TMJ, enabling simultaneous, bilateral recording of vibrations emanating from joint sounds during the opening and closing movements. The presence of a sound peak was compared with the MRI diagnosis of ADDwR, while a multipeak aspect was compared with ADDw/oR diagnosis using Cohen's kappa test. Results: The presence of a peak-shaped track has high specificity for ADDwR (90.27%). The Cohen's kappa calculated for the ADDwR was 0.5615 (good-moderate). The presence of a multipeak-shaped track has low specificity (65.22%) and sensitivity (70.42%). The Cohen's kappa calculated for the ADDw/oR was 0.2992 (poor). Conclusions:The present study recommends the use of EVG to support the clinical diagnosis of a disc displacement with reduction when MRI is not available or when subjects cannot be investigated by MRI.

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“…22 Physical examination findings in TMJ disorders are highly non-specific. 23,24 On the other hand, 82% of patients presenting with pain have displaced discs when examined with MRI. 25,26 Although MRI allows excellent depiction of TMJ anatomy and functional abnormalities, especially during imaging of the closed and open jaw positions, its specificity is also limited owing to the high prevalence of disc displacement as a variant.…”

Section: Discussionmentioning

confidence: 99%

Indirect measurement of the temporomandibular joint disc elasticity with magnetic resonance imaging

Yıldırım¹,

Dergin²,

Tamam³

et al. 2011

Dentomaxillofacial Radiology

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Objectives: The radiological evaluation of the temporomandibular joint (TMJ) consists of demonstrating the morphological features of the disc and the condyle in closed and open mouth positions using MRI. We aimed to determine elasticity of the disc by measuring the amount of elongation during mouth opening. Methods: The study population included 49 patients. Coronal T 1 and multiplane oblique T 2 weighted gradient recalled echo sequences were acquired in open and closed mouth positions. Biconcave TMJ disc lengths were measured on sagittal oblique images in both positions. Elongation ratio (ER) was calculated for each patient. According to the findings, TMJs are classified into subgroups: normal (N), dislocated with reduction (DWR), pure DWR (p-DWR), DWR with additional findings (DWR-a) and dislocated without reduction (DWOR). Statistical analysis was performed using the x 2 test and receiver operating characteristic analysis. Results: Out of 98 discs, 22 of them were evaluated as N, 60 as DWR (28 p-DWR, 32 DWR-a) and 16 as DWOR. There was no significant difference among the disc lengths in three subgroups at the closed mouth position (P 5 0.15), whereas there was significant difference in the open mouth position (P 5 0.0001). There was significant difference among subgroups as far as ER is concerned (P , 0.05). Conclusions: ER is a strong indicator of elasticity. Compared with the N group, elasticity of the disc was not significantly different in the p-DWR group but the disc elasticity was very degraded in DWR-a and in DWOR. A negative conversion or one smaller than 1.4 mm means a compromised disc, although sometimes it will possess normal anatomical configurations or signal characteristics.

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Magnetic resonance imaging of the TMJ disc in asymptomatic volunteers

Cited by 289 publications

References 11 publications

Assessment of TMJ Disorders Using Ultrasonography as a Diagnostic Tool: A Review

Assessment of TMJ Disorders Using Ultrasonography as a Diagnostic Tool: A Review

Diagnostic concordance between MRI and electrovibratography of the temporomandibular joint of subjects with disc displacement disorders

Indirect measurement of the temporomandibular joint disc elasticity with magnetic resonance imaging

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