Are temporomandibular joint disk displacements without reduction and osteoarthrosis important determinants of mandibular backward positioning and clockwise rotation?

Emshoff, Rüdiger; Moriggl, Alexander; Rudisch, Ansgar; Laimer, Klaus; Neunteufel, Nikolaus; Crismani, Adriano

doi:10.1016/j.tripleo.2010.05.064

Cited by 13 publications

(5 citation statements)

References 18 publications

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“…Radiographically detectable degenerative changes in the joint are almost exclusively limited to joints with a permanent disc displacement . There are also indications that disc displacements, with or without reduction, may be correlated with alterations in oro‐facial skeletal morphology . Although these cross‐sectional studies cannot reveal cause‐and‐effect relationships between disc displacements and the skeletal alterations, the results from a longitudinal study of TM‐joint disc status and craniofacial growth , and from animal studies, in which non‐reducing disc displacements were surgically created in growing rabbits , suggest that disc displacements can either retard or arrest condylar growth and may thus be related to mandibular retrognathia and/or facial asymmetry.…”

Section: Resultsmentioning

confidence: 99%

Disc displacement within the human temporomandibular joint: a systematic review of a ‘noisy annoyance’

Naeije

Veldhuis

et al. 2012

J of Oral Rehabilitation

107

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To describe the scientific literature about the diagnosis, prevalence, aetiology, natural course and possible treatment modalities of disc displacements within the temporomandibular (TM) joint. PubMed was searched for specific indexing terms. The search yielded 1211 papers. After screening according to title and abstract, 695 papers were excluded, and after full-text reading, 107 papers remained. Hand-searching of the reference lists resulted in an extra 47 papers. Thirteen studies, published since the literature search was carried out, were also included, resulting in 167 papers for this review. A disc displacement is a highly prevalent derangement within the TM joint, with reported prevalence ranging from 18% to 35% in the general population. A disc displacement with reduction is mostly a stable, pain-free and lifelong condition of the joint. In only a small minority of patients, the disc loses its capacity to reduce on opening. Surprisingly, only in rare cases, the loss of disc reduction is accompanied by signs and symptoms of a closed lock (viz. a painful and limited mouth opening). These signs and symptoms have a tendency to reduce and in many cases to resolve within months. The favourable natural course of disc displacements only warrants active treatment for symptomatic disc displacements without reduction. The primary treatment option is a conservative, non-surgical treatment focusing at speeding up the natural process of alleviation of pain and of improvement in mouth opening. For most patients, a disc displacement is just a pain-free, lifelong lasting, 'noisy annoyance' from their TM joint.

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Section: Resultsmentioning

confidence: 99%

Disc displacement within the human temporomandibular joint: a systematic review of a ‘noisy annoyance’

Naeije

Veldhuis

et al. 2012

J of Oral Rehabilitation

107

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“…6 Concurrently, temporomandibular disorders have been demonstrated to induce mandibular asymmetry. [7][8][9][10] A study conducted by Emshoff et al, 11 has shown that TMJ disc displacements without reduction and osteoarthrosis are important determinants of mandibular backward positioning. Disc displacement might induce skeletal changes in facial morphology.…”

Section: Introductionmentioning

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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“…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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Are temporomandibular joint disk displacements without reduction and osteoarthrosis important determinants of mandibular backward positioning and clockwise rotation?

Cited by 13 publications

References 18 publications

Disc displacement within the human temporomandibular joint: a systematic review of a ‘noisy annoyance’

Disc displacement within the human temporomandibular joint: a systematic review of a ‘noisy annoyance’

Posteroanterior cephalometric changes in subjects with temporomandibular joint disorders

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

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