Skeletal Differences in Patients With Temporomandibular Joint Disc Displacement According to Sagittal Jaw Relationship

Yang, Il-Hyung; Moon, Beom-Seok; Lee, Seung–Pyo; Ahn, Sug-Joon

doi:10.1016/j.joms.2011.08.027

Cited by 26 publications

(25 citation statements)

References 15 publications

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“… 13 , 17 , 24 CBCT scans provide multiplanar images of the condyle and surrounding structures and can be three-dimensionally reconstructed, allowing analysis of TMJ morphology, position, and dynamics. 14 , 25 , 26 , 27 They enable easier and more accurate visualization of complicated anatomic structures with less radiation exposure, lower operating cost, and shorter scan time than conventional spiral CT. 9 , 10 , 14 , 26 , 28 In the present study, an expert orthodontist measured all the variables by using CBCT software. The software simultaneously provides sagittal, axial, coronal, and 3D reconstructed views of every landmark; measurement errors caused by inaccurate determination of key anatomic points are therefore minimized.…”

Section: Discussionmentioning

confidence: 99%

“…Patients requiring orthodontic treatment often have TMDs. 27 , 30 , 31 Therefore, orthodontic treatment should be aimed at not only correcting tooth alignment and occlusal relationships but also normalizing condylar position. Consideration of condylar morphology and position as well as centric relation during treatment planning would yield better outcomes.…”

Section: Discussionmentioning

confidence: 99%

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Three-dimensional cone-beam computed tomography based comparison of condylar position and morphology according to the vertical skeletal pattern

2015

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ObjectiveTo compare condylar position and morphology among different vertical skeletal patterns.MethodsDiagnostic cone-beam computed tomography images of 60 adult patients (120 temporomandibular joints) who visited the orthodontic clinic of Hallym University Sacred Heart Hospital were reviewed. The subjects were divided into three equal groups according to the mandibular plane angle: hypodivergent, normodivergent, and hyperdivergent groups. Morphology of the condyle and mandibular fossa and condylar position were compared among the groups.ResultsThe hypodivergent and hyperdivergent groups showed significant differences in superior joint spaces, antero-posterior condyle width, medio-lateral condyle width, condyle head angle, and condylar shapes.ConclusionsCondylar position and morphology vary according to vertical facial morphology. This relationship should be considered for predicting and establishing a proper treatment plan for temporomandibular diseases during orthodontic treatment.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Three-dimensional cone-beam computed tomography based comparison of condylar position and morphology according to the vertical skeletal pattern

2015

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“…14 The lateral cephalogram is used for analysing the anteroposterior or vertical relationships of the maxilla and of the mandible to the cranial base. In a study by Yang et al, 15 using lateral cephalograms, the authors found that the sagittal skeletal characteristics of subjects with TMJ disc displacement are different from those of subjects with normal disc position.…”

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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“…Yang et al [ 11 ], suggested that the skeletal characteristics of patients with disc displacement are influenced by the sagittal relationship established according to mandible size. In addition, some authors also reported association of disc displacement with/without reduction with linear and angular posterior measurements.…”

Section: Introductionmentioning

confidence: 99%

Vertical Craniofacial Morphology and its Relation to Temporomandibular Disorders

Bavia¹,

Garcia

2016

JOMR

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ObjectivesThis study investigated the association between craniofacial morphology and temporomandibular disorders in adults. The influence of different craniofacial morphologies on painful temporomandibular disorders was also evaluated.Material and MethodsA total of 200 subjects were selected, including 100 with temporomandibular disorders (TMD) and 100 without TMD (control), diagnosed by research diagnostic criteria for temporomandibular disorders. All subjects were submitted to lateral cephalometric radiographs, and classified as brachyfacial, mesofacial, or dolichofacial by Ricketts’ analysis. Data were analysed by Tukey-Kramer and Chi-square tests.ResultsNo association between craniofacial morphology and TMD was found (P = 0.6622). However, brachyfacial morphology influences the presence of painful TMD (P = 0.0077).ConclusionsCraniofacial morphology is not related to temporomandibular disorders in general.

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Skeletal Differences in Patients With Temporomandibular Joint Disc Displacement According to Sagittal Jaw Relationship

Cited by 26 publications

References 15 publications

Three-dimensional cone-beam computed tomography based comparison of condylar position and morphology according to the vertical skeletal pattern

Three-dimensional cone-beam computed tomography based comparison of condylar position and morphology according to the vertical skeletal pattern

Posteroanterior cephalometric changes in subjects with temporomandibular joint disorders

Vertical Craniofacial Morphology and its Relation to Temporomandibular Disorders

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