Structural Characteristics of Bilateral Temporomandibular Joint Disc Displacement Without Reduction and Osteoarthrosis Are Important Determinants of Horizontal Mandibular and Vertical Ramus Deficiency: A Magnetic Resonance Imaging Study

Bertram, Stefan; Moriggl, Alexander; Rudisch, Ansgar; Emshoff, Rüdiger

doi:10.1016/j.joms.2010.12.026

Cited by 27 publications

(18 citation statements)

References 14 publications

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“…25 Buranastidporn et al 26 have reported a relationship between the vertical asymmetry of the mandible and the occurrence of TMD signs due to the disruption of the normal load of the TMJ. On the other hand, TMDs may cause growth disturbances which may result in mandibular asymmetry.…”

Section: Discussionmentioning

confidence: 99%

Posteroanterior cephalometric changes in subjects with temporomandibular joint disorders

Almășan

Băciuţ²,

Hedeșiu³

et al. 2013

Dentomaxillofacial Radiology

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Objectives: The aim of the study was to establish the changes in posteroanterior cephalometric variables in subjects with temporomandibular joint disorders (TMDs). Methods: Posteroanterior cephalograms of 61 subjects (age range 16-36.6 years, standard deviation 4.88 years) were used to determine cephalometric differences. Subjects were classified according to the Research Diagnostic Criteria for Temporomandibular Joint Disorders into three groups: unilateral TMD, bilateral TMD and no TMD. 14 linear and angular measurements were assessed on the posteroanterior cephalogram. For assessing facial asymmetry, the asymmetry index for bilateral measurements was calculated between the right and the left side. In cases with unilateral TMD, the asymmetry index was calculated using the difference between the unaffected and affected side. The differences among multiple groups were analysed using the one-way analysis of variance test and Scheffé post hoc test. Results: 47 subjects were females (77%) and 14 were males (23%). 19 subjects had unilateral TMDs and 16 subjects had bilateral TMDs. The asymmetry index of the distance from the horizontal plane to the antegonion was higher in subjects with unilateral TMD than in patients with bilateral or no TMD (p , 0.05). Also, the asymmetry index of the distances from the vertical plane to the condyle (p 5 0.05), gonion (Go) (p 5 0.0004), antegonion (p 5 0.002) and chin (Ch) (p 5 0.02) was higher in subjects with unilateral TMDs. The asymmetry index of the O point-Go-Go9 and O point-Ch-Ch9 angles differed significantly in subjects with unilateral TMDs (p , 0.05). Conclusions: Unilateral TMDs are associated with changes in posteroanterior cephalometric measurements. The assessment of posteroanterior cephalometric variables could be used as a key factor for evaluating the presence of TMDs.

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Section: Discussionmentioning

confidence: 99%

Posteroanterior cephalometric changes in subjects with temporomandibular joint disorders

Almășan

Băciuţ²,

Hedeșiu³

et al. 2013

Dentomaxillofacial Radiology

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“…Investigators of human and animal studies 16,18 concluded that advanced imaging such as MRI and CT was critical for the assessment of the underlying etiology and pathologic mechanisms of TMJ disorders. Furthermore, during evaluation of a TMJ disorder, an attempt should be made to identify all of the components of the disease rather than focusing only on the obvious abnormality.…”

Section: Discussionmentioning

confidence: 99%

Computed tomographic findings in dogs and cats with temporomandibular joint disorders: 58 cases (2006–2011)

Arzi

Cissell²,

Verstraete

et al. 2013

javma

133

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Objective To describe CT findings in dogs and cats with temporomandibular joint (TMJ) disorders. Design Retrospective case-series. Animals 41 dogs and 17 cats. Procedures Medical records and CT images of the skull were reviewed for dogs and cats that were examined at a dentistry and oral surgery specialty practice between 2006 and 2011. Results Of 142 dogs and 42 cats evaluated, 41 dogs and 17 cats had CT findings consistent with a TMJ disorder. In dogs, the most common TMJ disorder was osteoarthritis; however, in most cases, there were other TMJ disorders present in addition to osteoarthritis. Osteoarthritis was more frequently identified at the medial aspect rather than the lateral aspect of the TMJ, whereas the frequency of osteoarthritic involvement of the dorsal and ventral compartments did not differ significantly. In cats, fractures were the most common TMJ disorder, followed by osteoarthritis. Clinical signs were observed in all dogs and cats with TMJ fractures, dysplasia, ankylosis, luxation, and tumors; however, only 4 of 15 dogs and 2 of 4 cats with osteoarthritis alone had clinical signs. Conclusions and Clinical Relevance Results indicated that TMJ disorders are frequently present in combination. Osteoarthritis was the most common TMJ disorder in dogs and the second most common TMJ disorder in cats. Computed tomography should be considered as a tool for the diagnosis of TMJ disorders in dogs and cats with suspected orofacial disorders and pain.

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“…Despite the increased range of jaw motion and decreased pain, several studies have demonstrated that the displacement of the disc and the deformation of the disc/condyle complex increases . There are also some indications that the permanently displaced disc may be correlated with alterations in maxillofacial skeletal morphology in the long term .…”

Section: Resultsmentioning

confidence: 99%

Timing interventions in relation to temporomandibular joint closed lock duration: a systematic review of ‘locking duration’

Al-Baghdadi

Durham

Steele

2014

J of Oral Rehabilitation

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Temporomandibular joint (TMJ) 'closed lock' (CL) is a clinical condition causing TMJ pain and limited mouth opening (painful locking) that is mostly attributed to disc displacement without reduction (DDwoR), or less commonly to anchored disc phenomenon (ADP). Both conditions are described clinically as CL that can be 'acute' or 'chronic' depending on the duration of locking. There is, however, no consensus about the duration of locking that defines the acute state and its effect on the success of interventions. This review paper, therefore, aims to provide: (i) a narrative review of the pathophysiological need for early intervention in DDwoR and the clinical implications of acute/chronic CL stages on the management pathway; (ii) a systematic review investigating the effects of locking duration on the success of interventions for CL management. Electronic and manual searches until mid-August 2013 were conducted for English-language studies of any design investigating the effects of non-surgical and surgical interventions for acute or chronic CL (DDwoR or ADP). A total of 626 records were identified, and 113 studies were included. Data extraction and quality assessment were completed for all included studies. Included studies were, however, heterogeneous and mostly of poor-quality leading to contradictory and inconsistent evidence on the effect of the duration of locking on treatment outcomes. Future high-quality trials investigating the effect of CL duration on treatment outcome are needed. At present, early intervention by 'unlock' mandibular manipulation seems to be the most practical and realistic approach that can be attempted first in every CL patient as an initial diagnostic/therapeutic approach.

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Structural Characteristics of Bilateral Temporomandibular Joint Disc Displacement Without Reduction and Osteoarthrosis Are Important Determinants of Horizontal Mandibular and Vertical Ramus Deficiency: A Magnetic Resonance Imaging Study

Cited by 27 publications

References 14 publications

Posteroanterior cephalometric changes in subjects with temporomandibular joint disorders

Posteroanterior cephalometric changes in subjects with temporomandibular joint disorders

Computed tomographic findings in dogs and cats with temporomandibular joint disorders: 58 cases (2006–2011)

Timing interventions in relation to temporomandibular joint closed lock duration: a systematic review of ‘locking duration’

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