The prevalence and magnitude of mandibular displacement in a survey population

Rieder, Carl E.

doi:10.1016/s0022-3913(78)80105-x

Cited by 29 publications

(20 citation statements)

References 11 publications

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“…This implies that skeletal morphology in the MI position of patients with large CR-MI discrepancy changes to a more retruded mandible and a more hyperdivergent skeletal pattern in the CR position. These results are confirmed by the findings of previous studies 4,8,19 that showed that most patients with CR-MI discrepancy demonstrate vertical and anterior movement of the mandible between the CR and MI positions. As a result, original Class II occlusion with hyperdivergent facial patterns in the MI position may be exacerbated in the CR position, which may in turn increase treatment difficulty and lead to the need for orthognathic surgery (as opposed to orthodontic treatment alone) in patients with large CR-MI discrepancy.…”

Section: Discussionsupporting

confidence: 90%

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Dentofacial characteristics in orthodontic patients with centric relation–maximum intercuspation discrepancy

Lim

Choi

Lee

et al. 2014

The Angle Orthodontist

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Section: Discussionsupporting

confidence: 90%

“…This shifting is called the CR-MI discrepancy. Many studies 3,4 have reported that most patients show a discrepancy between CR and MI. A small discrepancy of less than 1.0 mm in the vertical or horizontal plane is epidemiologically normal and apparently not a risk factor for temporomandibular disorder (TMD).…”

Section: Introductionmentioning

confidence: 99%

Dentofacial characteristics in orthodontic patients with centric relation–maximum intercuspation discrepancy

Lim

Choi

Lee

et al. 2014

The Angle Orthodontist

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“…But this finding is consistent with comparable studies [9][10][11][12][13][14][15]. Other studies refer to the three-dimensional condylar displacement, which also show significant differences of the maximal intercuspal position and the centric relation.…”

Section: Initial Neuromuscular Positionsupporting

confidence: 92%

Electronic central bearing point as registration method in individuals with and without temporomandibular disorders

Zorn

Peroz²

2016

Clin Oral Invest

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“…All these studies have employed relatively objective data, such as pocket probing depth, bone loss and presence or absence of caries, whereas standardization of CR manipulation is based on less objective data. 1,17 . A much higher percentage of individuals have a difference of 0.1 to 1.5 mm between CR and IC.…”

Section: Discussionmentioning

confidence: 99%

“…This small variability of sagittal displacement observed in the literature, combined to the difficulty experienced by examiners upon measuring, has influenced the agreement levels. The difficulty to evaluate the discrepancy is transmitted to the judgment form itself, in which differences below 0.5 mm may yield disagreement between examiners (IC = CR; up to 1.0 mm; and higher than 1.0 mm) 17 . In the present study, the report of possible pain during manipulation in symptomatic patients demonstrated an optimal agreement, possibly due to the fact that most patients in this group had a complaint of pain during manipulation, thus simplifying analysis of this item by the examiners and therefore increasing the agreement level.…”

Section: Discussionmentioning

confidence: 99%

Centric relation registration: intra- and interexaminer agreement after a calibration program

Kogawa

Lopes

Kato

et al. 2003

Pesqui. Odontol. Bras.

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Centric relation (CR) has been considered a maxillomandibular position of choice for some dental and prosthetic procedures. Although regarded as a fully reproducible relation, there is great controversy about its clinical use and recording technique, especially in patients with signs and symptoms of temporomandibular disorders (TMD). This study aimed at evaluating the effectiveness of a training program on intra-and interexaminer agreement when determining the clinical record of the CR position. Forty individuals constituted the sample, divided into symptomatic (TMD) and asymptomatic groups. Three previously calibrated examiners performed the initial assessment and the second evaluation after 30 days in a blind design, using Dawson's bilateral manipulation technique with and without an anterior stop. The amount of frontal and sagittal deviations in relation to intercuspal position, the presence of pain and discomfort during manipulation, and the first occlusal contact in CR were analyzed. Kendall and Kappa tests with a 5% level of significance were used to determine agreement. Values for both intra-and interexaminer agreement were deemed good. The best results were obtained for frontal deviations and assessment of pain (or absence of it) during manipulation. Sagittal deviations showed the lowest agreement in both examinations. The authors concluded that a calibration program could be effective for intra-and interexaminer agreement when recording centric relation. However, caution is recommended when analyzing some isolated items. DESCRIPTORS: Centric relation; Temporomandibular joint disorders.RESUMO: Na tentativa de estabelecer uma posição maxilomandibular reprodutível em pacientes sem dentes suportes posteriores ou portadores de oclusão instável, o conceito de relação cêntrica (RC) foi introduzido. Apesar de ser utilizada como uma posição de referência, existe uma considerável divergência de opiniões sobre a sua reprodutibilidade. Este estudo procurou avaliar se os métodos de treinamento profissional são efetivos na análise e obtenção de RC. Para isso utilizou-se uma amostra de 40 indivíduos, divididos em 20 assintomáticos e 20 portadores de disfunções da ATM. Os indivíduos foram avaliados por 3 examinadores, previamente calibrados. Foram realizados 2 exames: inicial e final (30 dias após o inicial), possibilitando dessa forma, análise da concordância interexaminadores, assim como intraexaminadores. Posteriormente, os resultados foram submetidos à análise estatística, utilizando-se os testes de concordância de Kendall e de Kappa. Os resultados foram considerados bons, sendo os melhores obtidos para a análise do desvio frontal e relato de dor (ou ausência) durante a manipulação. Os autores concluíram que os programas de calibração podem ser efetivos para análise da RC. No entanto, cautela é recomendada quando da análise de alguns itens isolados.

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The prevalence and magnitude of mandibular displacement in a survey population

Cited by 29 publications

References 11 publications

Dentofacial characteristics in orthodontic patients with centric relation–maximum intercuspation discrepancy

Dentofacial characteristics in orthodontic patients with centric relation–maximum intercuspation discrepancy

Electronic central bearing point as registration method in individuals with and without temporomandibular disorders

Centric relation registration: intra- and interexaminer agreement after a calibration program

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