scholarly journals High-resolution ultrasonography in assessing temporomandibular joint disc position

2018 ◽  
Vol 1 (1) ◽  
pp. 64 ◽  
Author(s):  
Daniel Talmaceanu ◽  
Lavinia Manuela Lenghel ◽  
Nicolae Bolog ◽  
Roxana Popa Stanila ◽  
Smaranda Buduru ◽  
...  
Keyword(s):  
High Resolution ◽  
Temporomandibular Joint ◽  
Predictive Value ◽  
Diagnostic Value ◽  
Degenerative Changes ◽  
Disc Displacement ◽  
Disc Position ◽  
Tmj Disc ◽  
High Resolution Ultrasonography ◽  
Disc Displacement With Reduction

Aims: The purpose of this study was to determine the diagnostic value of high-resolution ultrasonography (US) in temporomandibular joint (TMJ) disc displacements.Materials and methods: A number of 74 patients (148 TMJs) with signs and symptoms of TMJ disorders, according to the Research Diagnostic Criteria for Temporomandibular Disorders, were included in this study. All patients received US and magnetic resonance imaging (MRI) of both TMJs 1 to 5 days after the clinical examination. MRI examinations were performed using 1.5 T MRI equipment (Siemens Avanto, Siemens, Erlangen). Ultrasonographic examination was performed on a Hitachi EUB 8500 (Hitachi Medical Corp., Tokyo, Japan) scanner with L 54 M6.5-13 MHz linear transducer.Results: MRI depicted 68 (45.95%) normal joints, 47 (31.76%) with disc displacement with reduction, 33 (22.3%) with disc displacement without reduction and 34 (22.97%) with degenerative changes. US detected 78 (52.7%) normal joints, 37 (25%) with disc displacement with reduction, 33 (22.3%) with disc displacement without reduction and 21 (14.19%) with degenerative changes. Compared to MRI, US showed a sensitivity of 93.1%, specificity of 87.88%, accuracy of 90.32%, a positive predictive value of 87.1% and a negative predictive value of 93.55% for overall diagnosis of disc displacement. The Youden index was 0.81.Conclusions: Based on our results, high-resolution ultrasonography showed high sensitivity, specificity and accuracy in the diagnosis of TMJ disc displacement. It could be a valuable imaging technique in assessing TMJ disc position. The diagnostic value of high-resolution ultrasonography depends strictly on the examiner’s skills and on the equipment used. 

scholarly journals Comparison of the effectiveness of high resolution ultrasound with MRI in patients with temporomandibular joint dısorders

2019 ◽  
Vol 48 (5) ◽  
pp. 20180349 ◽  
Author(s):  
Dilek Yılmaz ◽  
Kıvanç Kamburoğlu
Keyword(s):  
High Resolution ◽  
Temporomandibular Joint ◽  
Predictive Value ◽  
Intraclass Correlation ◽  
Temporomandibular Joint Disorders ◽  
Joint Effusion ◽  
Significance Level ◽  
Disc Position ◽  
Ultrasound Measurements ◽  
Sensitivity Specificity

Objectives: To assess the effectiveness of a high resolution ultrasound for temporomandibular joint (TMJ) evaluation in comparison to MRI in patients with TMJ disorders. Methods: Our study comprised 50 patients (35 female and 15 male) with a mean age of 30.61. Clinical examination was performed. Bilateral imaging of TMJ was conducted by using a high-resolution ultrasound and 1.5 Tesla MR. Diagnostic accuracy of ultrasound was assessed for disc displacement and joint effusion in comparison to MRI. Sensitivity (Se), specificity (Sp), positive predictive value (PPV), negative predictive value (NPV), and accuracy (Ac) were calculated for ultrasound. Measurements were compared by Bland & Altman and intraclass correlation coefficient (ICC). Significance level was set at p < 0.05. Results: Most frequent complaints were noise 42 (84%) and 34 (68%) pain. For disc position assessment with ultrasound for both sides and closed-open mouth, sensitivity, specificity, PPV, NPV and accuracy ranged between, 0.88 – 1, 0.60 – 0.87, 0.70 – 0.97, 0.75 – 1, and 0.84 – 0.98, respectively. For the diagnosis of effusion with ultrasound for both sides, sensitivity, specificity, PPV, NPV and accuracy ranged between 0.65 – 0.81, 0.91 – 1, 0.96 – 1, 0.45 – 0.46 and 0.72 – 0.84, respectively. ICC values calculated for intraobserver agreement for right and left TMJ for all measurements were found to be statistically significant (p < 0.001). ICC values ranged between 0.964 and 0.995 suggesting excellent correlation among ultrasound and MRI. In general, for ultrasound measurements we found a mean difference ranging between −0.182 and +0.130 mm in comparison to MRI. Conclusion: Ultrasound can be suggested as an adjunct to common imaging modalities in the assessment of TMJ.

scholarly journals Evaluation of TMJ articular eminence morphology and disc patterns in patients with disc displacement in MRI

2007 ◽  
Vol 21 (3) ◽  
pp. 265-271 ◽  
Author(s):  
Fabio Henrique Hirata ◽  
Antônio Sérgio Guimarães ◽  
Jefferson Xavier de Oliveira ◽  
Carla Ruffeil Moreira ◽  
Evangelo Tadeu Terra Ferreira ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Contralateral Side ◽  
Magnetic Resonance Images ◽  
Disc Displacement ◽  
Articular Disc ◽  
Articular Eminence ◽  
Disc Position ◽  
Disc Configuration ◽  
Disc Displacement With Reduction

The aim of this study was to assess the shape of the temporomandibular joint (TMJ) articular eminence and the articular disc configuration and position in patients with disc displacement. TMJ magnetic resonance images (MRI) of 14 patients with bilateral disc displacement without unilateral reduction were analyzed. Articular eminence morphology was characterized as box, sigmoid, flattened, or deformed. Articular disc configuration was divided into biconcave, biplanar, biconvex, hemiconvex or folded, and its position, as "a" (superior), "b" (anterosuperior), "c" (anterior) or "d" (anteroinferior). The images were divided and the sides with disc displacement with reduction (DDWR) and without reduction (DDWOR) were compared. Regarding articular eminence shape, the sigmoid form presented the greatest incidence, followed by the box form, in the DDWR side, although this was not statistically significant. In the DDWOR side, the flattened shape was the most frequent (p = 0.041). As to disc configuration, the biconcave shape was found in 79% of the DDWR cases (p = 0.001) and the folded type predominated in 43% of the DDWOR cases (p = 0.008). As to disc position, in the DDWR side, "b" (anterosuperior position) was the most frequent (p = 0.001), whereas in the DDWOR side, "d" (anteroinferior position) was the most often observed (p = 0.001). The side of the patient with altered disc configuration and smaller shape of TMJ articular eminence seems to be more likely to develop non-reducing disc displacement as compared to the contralateral side.

scholarly journals Temporomandibular joint loads in subjects with and without disc displacement

2009 ◽  
Vol 1 (1) ◽  
pp. 29 ◽  
Author(s):  
Laura Rei Iwasaki ◽  
Michael Crosby ◽  
Yoly Gonzalez ◽  
Willard D. McCall ◽  
David B. Marx ◽  
...  
Keyword(s):  
Individual Differences ◽  
Temporomandibular Joint ◽  
Magnetic Resonance Images ◽  
Joint Disease ◽  
Computer Assisted ◽  
Disc Displacement ◽  
Joint Mechanics ◽  
Disc Position ◽  
Tmj Disc ◽  
Joint Loads

The likelihood of development of degenerative joint disease (DJD) of the temporomandibular joint (TMJ) is related to the integrity of the TMJ disc. Predilection for mechanical failure of the TMJ disc may reflect inter-individual differences in TMJ loads. Nine females and eight males in each of normal TMJ disc position and bilateral disc displacement diagnostic groups consented to participate in our study. Disc position was determined by bilateral magnetic resonance images of the joints. Three-dimensional (3D) anatomical geometry of each subject was used in a validated computer-assisted numerical model to calculate ipsilateral and contralateral TMJ loads for a range of biting positions (incisor, canine, molar) and angles (1-13). Each TMJ load was a resultant vector at the anterosuperior-most mediolateral midpoint on the condyle and characterized in terms of magnitude and 3D orientation. Analysis of variance (ANOVA) was used to test for effects of biting position and angle on TMJ loads. Mean TMJ loads in subjects with disc displacement were 9.5-69% higher than in subjects with normal disc position. During canine biting, TMJ loads in subjects with disc displacement were 43% (ipsilateral condyle, p=0.029) and 49% (contralateral condyle, p=0.015) higher on average than in subjects with normal disc position. Biting angle effects showed that laterally directed forces on the dentition produced ipsilateral joint loads, which on average were 69% higher (p=0.002) compared to individuals with normal TMJ disc position. The data reported here describe large differences in TMJ loads between individuals with disc displacement and normal disc position. The results support future investigations of inter-individual differences in joint mechanics as a variable in the development of DJD of the TMJ.

scholarly journals Management of Internal Derangement of Temporomandibular Joint Disc Displacement with Reduction Using Two Different Lines of Treatment

2021 ◽  
Vol 24 (2) ◽  
pp. 8
Author(s):  
Mohamed Ahmed Helal ◽  
Shoroog Hassan Agou ◽  
Amr Bayoumi ◽  
Ahmed Imam ◽  
Ali Habiballah Hassan
Keyword(s):  
Range Of Motion ◽  
Temporomandibular Joint ◽  
Lower Cost ◽  
Internal Derangement ◽  
Disc Displacement ◽  
Temporomandibular Joint Disc ◽  
Non Invasive ◽  
Anterior Disc Displacement ◽  
Disc Displacement With Reduction

Objetive: This study was to compare the effectiveness of arthrocentesis versus the insertion of anterior repositioning splint (ARS) in improving the mandibular range of motion (MRM) for patients with the temporomandibular joint (TMJ) anterior disc displacement with reduction (ADDwR). Methods: 36 patients diagnosed as ADDwR were recruited and divided randomly into two groups. The first group (G1) was treated by arthrocentesis, and the second (G2) was treated using ARS. All patients were reexamined after six months. Results: Except that for protrusive movement, there were significant differences between the two groups for the percentage changes of the MRM as measured by the amount of pain free opening, unassisted opening, maximum assisted opening, right lateral and left lateral movements (p < 0.05). Conclusion: Within the context of the current study, the non-invasive, lower cost ARS, provided better results in improving the MRM when managing ADDwR cases.   Keywords Arthrocentesis; Anterior repositioning splint; TMD; Internal derangement; Anterior disc displacement; Mandibular range of motion.

scholarly journals The importance of multisection sagittal and coronal magnetic resonance imaging evaluation in the assessment of temporomandibular joint disc position

2020 ◽  
Vol 25 (1) ◽  
pp. 159-168
Author(s):  
Monika Litko-Rola ◽  
Jacek Szkutnik ◽  
Ingrid Różyło-Kalinowska
Keyword(s):  
Sagittal Plane ◽  
Temporomandibular Disorder ◽  
False Negative ◽  
Disc Displacement ◽  
Resonance Imaging ◽  
Imaging Evaluation ◽  
Magnetic Resonance Imaging Evaluation ◽  
Temporomandibular Joint Disc ◽  
Disc Position ◽  
Tmj Disc

Abstract Objectives The aim of this study was to evaluate diagnoses of temporomandibular (TMJ) disc displacement by comparing evaluations done on the basis of central sagittal scans only, the most often used in temporomandibular disorder (TMD) patients, with a multisection evaluation done with both sagittal and coronal scans. Materials and methods Multisection MRI analysis of 382 TMJs was conducted in 191 patients with disc displacement according to RDC/TMD criteria. Disc position in the intercuspal position (IP) was assessed two times using two different methods. The first method involved a TMJ disc position evaluation on the central slide in the oblique sagittal plane only. In the second method, the TMJ disc position was assessed on all oblique sagittal and coronal images. McNemar’s χ2 test was used to evaluate the differences between the sensitivities of two methods. Results The first method (central oblique sagittal scans assessment) identified 148 TMJs (38.7%) with normal disc position compared with 89 TMJs (23.3%) with normal disc position found by the second method (all oblique sagittal and coronal scans assessment). The sensitivity of analysis in both planes was significantly higher than in the sagittal plane only (p < 0.001). Conclusions The multisection analysis in the sagittal and coronal plane allows to distinguish the correct disc position from disc displacement and thus improve evaluation of TMJ internal derangement. Clinical relevance The multisection sagittal and coronal images should be recommended as a standard in MRI of the TMJ disc displacement in patients with TMD to avoid false-negative diagnoses.

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