MR of 732 TMJs: anterior, rotational, partial and sideways disc displacements

Foucart, Jean‐Michel; Carpentier, Pierre; Pajoni, D; Marguelles-Bonnet, R; Pharaboz, C

doi:10.1016/s0720-048x(97)00102-2

Cited by 57 publications

(57 citation statements)

References 16 publications

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“…According to Alexious et al, 16 patients in older age groups are expected to have more frequent and severe bone changes than those in younger age groups. In our study, with the exception of patients aged 80-89 years, the prevalence of bone changes increased with age, as reported by Foucart et al, 19 who assessed the TMJs of patients with disc displacement without reduction, and in agreement with LeResche, 15 who found that pain in the TMJ region occurs in approximately 10% of the population over the age of 18 years. However, Cruzoé-Rebello et al 18 and Isberg et al 20 did not find an association between increased age and an increase in bone changes; they found that a greater number of individuals aged between 20 and 49 years showed TMJ changes.…”

Section: Discussionsupporting

confidence: 89%

Evaluation of bone changes in the temporomandibular joint using cone beam CT

Pontual

Freire²,

Barbosa³

et al. 2012

Dentomaxillofacial Radiology

156

139

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Objective: The aim of this study was to assess bone changes and mobility in temporomandibular joints (TMJs) using cone beam CT (CBCT) in a population sample in Recife, PE, Brazil. Methods: The TMJ images of patients treated by a radiologist at a private dental radiology service over a period of 1 year were retrieved from the computer database and assessed using a computer with a 21-inch monitor and the iCAT Cone Beam 3D Dental Imaging System Workstation program (Imaging Sciences International, Hatfield, PA). The Pearson x 2 test was used to analyse the differences in percentage of bone changes among the categories of mobility (p # 0.05). The McNemar test was used to compare the presence of bone changes in TMJs on the right and left sides (p # 0.05). Results: An adjusted logistic regression model was used to assess the effect of age and gender on the occurrence of bone changes (p # 0.05). Bone changes were present in 227 (71%) patients. Age group and gender showed a statistically significant association with presence of bone changes (p # 0.05). There was no significant difference between the right and left sides (p 5 0.556) and in condylar mobility (p 5 0.925) with regard to the presence of degenerative bone changes. Conclusions: There is a high prevalence of degenerative bone alteration in TMJs, which is more frequent in women and mostly located in the condyle. The prevalence of degenerative bone changes increases with age. There is no correlation between condylar mobility and the presence of degenerative bony changes in TMJs.

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Section: Discussionsupporting

confidence: 89%

Evaluation of bone changes in the temporomandibular joint using cone beam CT

Pontual

Freire²,

Barbosa³

et al. 2012

Dentomaxillofacial Radiology

156

139

View full text Add to dashboard Cite

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“…In line with previous studies [5,11,17], disc morphology was classified into six categories: biconcave (a disc with clearly identifiable posterior and anterior bands and a tapered intermediate zone), biplanar (a disc with equal thickness in all three parts), biconvex (a humped disc), enlargement in the posterior band (a disc in which the posterior band is thicker and longer anteroposteriorly), Yshaped, and folded (irregular; Fig. 6).…”

Section: Methodsmentioning

confidence: 53%

“…When the assessments differed, a consensus was reached through a repeated evaluation and discussion between the radiologists. The disc displacement of the TMJs was classified as normal, partial anterior disc displacement (PADD), anterior disc displacement with reduction (ADDwR), anterior disc displacement without reduction (ADDwoR), and sideways disc displacement [MDD/LDD (medial disc displacement/lateral disc displacement)] according to the following MRI criteria [7,16,17].…”

Section: Methodsmentioning

confidence: 99%

MRI evaluation of the classification, frequency, and disc morphology of temporomandibular joint disc displacements: a multicenter retrospective study in a Turkish population

et al. 2009

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Objectives Magnetic resonance imaging (MRI) of the temporomandibular joint (TMJ) and temporomandibular disorders (TMDs) have been discussed in detail for various populations. As no such study has examined the Turkish population, we determined the frequency of TMDs in the Turkish population through a multicentric investigation using MRI. Methods This retrospective study examined 504 TMJs of 252 symptomatic patients who had undergone bilateral MRI investigation in four different dental schools. The image analysis included the assessment of disc position and morphology, and recaptured the coronal and sagittal planes in the closed and open mouth positions. The TMJ disorders were classified using the Clinical Diagnostic Criteria for Temporomandibular Disorders (CDC/TMD). The correlations among the groups of TMJs and disc morphologies were analyzed statistically using the chi-square test (P B 0.05). Results Disc displacement and abnormal disc morphology were detected in 69.5% of the symptomatic TMJ patients. Of the joints examined using MRI, 154 were normal, 135 had anterior disc displacement with reduction (ADDwR), 145 had anterior disc displacement without reduction (ADDwoR), 30 had partial anterior disc displacement, and 18 had sideways disc displacements. Regarding disc morphology, enlargement in the posterior band was the most commonly encountered type and was observed in 152 TMJs. Overall, the average time for referral for treatment, which was defined as the time from symptom onset until the time of referral, was 1.5 years.Conclusions The most common type of disc displacement found in the Turkish population studied was ADDwoR. In addition, patients did not perceive the symptoms of TMDs as a disease and did not seek help until the TMJ derangement caused a major complaint.

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“…Sideways disk displacement is often observed in patients with internal derangement. Foucart et al (17) reported that 37% of joints with internal derangement had sideways disk displacement, and pure sideways disk displacement, ie, with no anterior disk displacement, was seen in 4% of joints with internal derangement. Thus, the present study targeted an uncommon pathology of internal derangement of the TMJ.…”

Section: Discussionmentioning

confidence: 99%