scholarly journals Magnetic Resonance Imaging (MRI) Evaluation for Anterior Disc Displacement of the Temporomandibular Joint

2017 ◽  
Vol 23 ◽  
pp. 712-718 ◽  
Author(s):  
Zhongjun Yang ◽  
Mingguo Wang ◽  
Yingwei Ma ◽  
Qingguo Lai ◽  
Dongdong Tong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Disc Displacement ◽  
Resonance Imaging ◽  
Anterior Disc Displacement ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Evaluation

scholarly journals Occlusal stabilization appliance: evaluation of its efficacy in the treatment of temporomandibular disorders

2004 ◽  
Vol 12 (3) ◽  
pp. 238-243 ◽  
Author(s):  
Elisa Emi Tanaka ◽  
Emiko Saito Arita ◽  
Bunji Shibayama
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Imaging Modality ◽  
Clinical Status ◽  
Signs And Symptoms ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Evaluation

Occlusal stabilization appliances or splints are the most widely employed method for treatment of temporomandibular disorders (TMD). Magnetic Resonance Imaging (MRI) is the most indicated imaging modality to evaluate the components of the temporomandibular joint (TMJ). Forty patients with signs and symptoms of temporomandibular disorders were treated with splints for a mean period of 12 months, comprising regular semimonthly follow-ups. After stabilization of the clinical status, occlusal adjustments and MRI evaluation were performed. It was concluded that the success of this kind of treatment are related to the total (70%) or partial improvement (22.5%) of painful symptomatology and to the functional reestablishment of the craniomandibular complex. The MRI allowed evaluation and also the conclusion that the splints provide conditions for the organism to develop means to resist to the temporomandibular disorders by means of elimination of several etiologic factors. Moreover, after treatment the patients are able to cope with disc displacements with larger or smaller tolerance.

scholarly journals Diagnostic reproducibility of temporomandibular joint using magnetic resonance imaging at 0.5 and 1.5 Tesla

2017 ◽  
Vol 21 (3) ◽  
Author(s):  
Mathias Pante Fontana ◽  
Nádia Assein Arús ◽  
Mariana Boessio Vizzotto ◽  
Priscila Fernanda Da Silveira ◽  
Heloísa Emília Dias da Silveira ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Soft Tissues ◽  
Shape Change ◽  
Disc Displacement ◽  
Resonance Imaging ◽  
Anterior Disc Displacement ◽  
Disc Displacement With Reduction ◽  
Good Agreement

Introduction: magnetic resonance imaging is described as the reference standard for the evaluation of temporomandibular joint soft tissues; however, the literature shows conflicting results regarding the reproducibility of this method. Objective: this study aimed to assess the reproducibility of temporomandibular joint diagnoses using magnetic resonance imaging at 0.5 and 1.5 Tesla. Methods: a trained observer analyzed 212 temporomandibular joint images (134 at 0.5T and 78 at 1.5T) and diagnosed the presence or absence of nine conditions. Results: overall agreement was over 80% in both magnetic resonance units, with no significant differences (P > 0.05). Images at 0.5T and 1.5T provided excellent reproducibility for anterior disc displacement without reduction (κ = 0.82 and 0.80, respectively), hypermobility (κ = 0.84 and 0.90), and hypomobility (κ = 0.80 and 0.95), while fair to moderate values were obtained for anterior disc displacement with reduction (κ = 0.48 and 0.42) and disc shape changes (κ = 0.45 and 0.37). Conclusion: magnetic resonance imaging diagnoses at 0.5T and 1.5T presented good agreement. However, the lowest reproducibility for anterior disc displacement with reduction and disc shape change reveals the difficulty to diagnose these disorders.

scholarly journals A comparative study of the effects of the anterior disc displacement with reduction and without reduction on the components of the temporomandibular joint by using magnetic resonance imaging – A Retrospective study

2021 ◽  
pp. 73-85
Author(s):  
Shunmugavelu KARTHIK ◽  
◽  
Dimple M VASWANI ◽  
Shanmugam ARASU ◽  
Raghavelu Narendran MUGUNDAN ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Joint Space ◽  
Disc Displacement ◽  
Resonance Imaging ◽  
Range Of Movement ◽  
Anterior Disc Displacement ◽  
Closed Position ◽  
Disc Displacement With Reduction

Background: Internal derangement of the temporomandibular joint (TMJ) results in anterior disc displacement with reduction (ADDR), the disc is ante- riorly displaced in the closed position whereas in the opened position the disc returns to its normal location. In anterior disc displacement without reduction (AD- DWR), the disc is anteriorly displaced in the closed po- sition but does not return to its original location in the opened position. Here we studied and compared the effects of the ADDR and the ADDWR on the components of the TMJ by using the magnetic resonance imaging technique (MRI). Methods and materials: From the archival MRI records, 214 joints from 107 patients were included. The selec- tion criteria for the patients complaints as TMJ pain, clicking, limited mouth opening, headache, jaw tenderness and difficulty in eating. MRI records with sequences Proton Density (PD), PD FAT SAT and T2* gradient in the closed position and T2* gradient echo in the opened position. Data analysis and frequency distribution of explanatory variables by disc position in the open state was performed using chi-square test Results: Statistically significant differences were observed between the variables such as the joint space (closed position), disc morphology (closed position) and range of movement (opened position) among the ADDR and the ADDWR. In ADDWR, 20.3% demonstrated narrowed joint space and 1.6% with widened joint space, while in ADDR, 2.5% of joints had narrowed joint space and 0% widened joint space. Same was observed with abnormal disc morphology and rang of movement. Conclusion: The disc deformity is more in ADDWR compared to ADDR which can be seen as an alteration in the signal intensity. The malaligned disc could lead to the narrowing of the joint space and decreased range of movement in the ADDWR affected individuals.

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