Jaw biodynamic data for 24 patients with chronic unilateral temporomandibular disorder

López-Cedrún, José Luís; Santana‐Mora, Urbano; Pombo, María; Palomar, Amaya Pérez del; Peña, Vı́ctor Alonso de la; Mora, María Jesús; Santana, Urbano

doi:10.1038/sdata.2017.168

Cited by 9 publications

(12 citation statements)

References 17 publications

(19 reference statements)

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“…We had ensured the deglutition function when the subjects worn the compound could not be affected. Multiple previous studies utilized the reliable K7 Evaluation System (Myotronics®) to monitor the jaw motion [ [18] , [19] , [20] ]. This equipment could accurately trace the mandibular trajectory in swallowing pattern.…”

Section: Methodsmentioning

confidence: 99%

Vertical dimension of occlusion related to mandibular movement during swallowing

Shen

Wei

et al. 2021

Biomedical Journal

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Background Increasing the vertical dimension of occlusion (VDO) is a common procedure in complicated prosthodontic treatment. The swallowing technique had been verified as a functional method to determine the VDO. The purpose of this study was to investigate the association between increasing VDO and mandibular movement during swallowing. Methods 26 females and 14 males were enrolled (age range: 21 to 30 year-old). Under different increased VDO (3, 5, and 8 mm), the mandibular trajectory during swallowing was measured by K7 Evaluation System (Myotronics®). When the subjects were instructed to salivary swallowing, the range of mandibular movement in vertical, anteroposterior and lateral directions were recorded. Results Increasing VDO significantly impacted the range of mandibular movement in lateral direction during swallowing ( p < 0.0001, F value = 40.09). The average variance of the mandibular movement distance in lateral direction during swallowing raise 1.58 ( p = 0.001); 3.59 ( p = 0.0001) and 2.01 ( p = 0.001) when th VDO was raised from 3 mm to 5 mm; from 3 mm to 8 mm and from 5 to 8 mm respectively. The range of mandibular movement was significantly correlated to the increasing VDO ( p ≤ 0.05) under the analysis of the Post Hoc test. Conclusions VDO was closely correlated to the trajectory of mandibular motion during swallowing. The increase in VDO could change the extent of mandibular trajectory during swallowing if the increase was more than 3 mm. The range of mandibular motion when swallowing had positive correlative tendency as the VDO was increased.

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Section: Methodsmentioning

confidence: 99%

Vertical dimension of occlusion related to mandibular movement during swallowing

Shen

Wei

et al. 2021

Biomedical Journal

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“…As a common habit and a possible contributor of TMD, CSP could result into excessive load on the preferred chewing side of TMJ than that on the contralateral side, leading to the anatomic and structural changes of TMJ, including cartilage, 8 glenoid fossa 9 and condyle 10 . In addition, CSP can influence multiple aspects of mastication, like muscle activity, 11 occlusion, 2,12 condylar path and anterior guidance during chewing 6,13 . All these results indicated that CSP might be a potential contributor of TMD.…”

Section: Introductionmentioning

confidence: 93%

“…Some epidemiologic studies have shown that people with CSP have a higher prevalence of temporomandibular disorders (TMD), 3‐5 and also a great majority of TMD patients show CSP. Besides, the preferred chewing side often is the symptomatic side of the joints in TMD patients 6 3,4 and have a strong association with TMD symptoms 7 …”

Section: Introductionmentioning

confidence: 99%

A comparative study of condyle position in temporomandibular disorder patients with chewing side preference using cone‐beam computed tomography

Ma¹,

Wang

Huang

et al. 2022

J of Oral Rehabilitation

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Background Chewing side preference (CSP) could cause structural and morphological changes of temporomandibular joint (TMJ) and has been suggested as one aetiology of temporomandibular disorders (TMDs), but the condylar position in TMD patients with CSP is unknown. Objective To compare the condylar position in the TMD patients with and without CSP. Methods Ninety TMD patients with unilateral symptom (69 with CSP and 21 without CSP) and 20 asymptomatic participants received cone‐beam computed tomography. The condylar position was determined based on the measurements of sagittal joint spaces. Intergroup and intra‐group comparisons of the condylar position were performed. Results The condyles in asymptomatic participants located nearly randomly in anterior, centric and posterior positions. Patients without CSP had significantly more posterior condyles than asymptomatic participants (57.1% vs 30.0%, p < 0.05). In patients with CSP, 50.7% of the condyles on the preferred chewing side and 42.0% on the unpreferred side located posteriorly, reaching no significant level compared with the asymptomatic participants and patients without CSP (p > 0.05). The symptomatic joints and asymptomatic joints in patients with CSP and without CSP showed no significant differences in condylar position. While patients without CSP had significantly more posterior condyles in symptomatic joints than asymptomatic participants (p < 0.05), patients with CSP showed a trend towards more posterior condyles in symptomatic joints compared with the asymptomatic participants (53.6% vs 30.0%, p = 0.054). Conclusion Condylar position is not a strong indicator to differentiate CSP‐related TMDs from non‐CSP‐related TMDs. Posterior condyle could not be viewed as one indicator of TMD.

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“…Desarrollándose así en algunas pacientes relaciones molares y caninas diferentes en cada lado de la arcada; también se puede observar como consecuencia de una masticación viciosa cambios en la forma y posición de los cóndilos 6 . De hecho, la masticación unilateral entra dentro de las parafunciones, ya que no es normal que las personas usen un solo lado para comer, pero la mayoría de los pacientes son masticadores unilaterales, aunque la masticación puede realizarse de forma bilateral, cerca del 78% de los individuos siente preferencia por un lado en el que se realiza la mayor parte de la masticación 7 . Para los pacientes, masticar bilateral o unilateralmente es lo mismo, para ellos esto no marca ninguna diferencia en su sistema estomatognático esto se debe a que no conocen o conocen muy poco que en un paciente masticador bilateral existe una llamada posición intercuspidea que generalmente representará la posición de contacto funcional armónico, siendo llamada también oclusión céntrica donde normalmente los cóndilos se encuentran estables dentro de la fosa articular con una leve tensión, representando esto un caso normal de oclusión 7 .…”

Section: Introductionunclassified

Morphological changes of the jaw present in unilateral chewing patients

Ojeda¹,

Tovar²,

Melet³

et al. 2023

RevFacOdont

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Aim: To determine the morphological changes of the mandibular anatomical structures in relation to the masticatory pattern of patients attending the Craniomandibular Disorders Research Unit (Unicram) of the Faculty of Dentistry of the University of Carabobo, Valencia, Venezuela. Methods: Descriptive, non-experimental, cross-sectional study, whose sample consisted of 39 patients from 20 to 30 years old who attended the Craniomandibular Disorders Research Unit (UNICRAM) of the Faculty of Dentistry of the University of Carabobo, in a period of six months from March to September of the year 2021, selected based on the masticatory pattern of the patients who attending the temporomandibular disorders unit. It was verified if the patient is a unilateral chewer by giving him a piece of gum and asking him to chew it for 2 minutes, which, his chewing preference side could be observed, verifying the effectiveness of the AFM. With a panoramic radiograph, measurements were made through the Simoes Symmetry Panorogram. Results: The patients with the right working side highlighted an increase in the height and width of the condyle on the working side, while the balance side showed an increase in the width and height of the mandibular ramus; and in patients with the left working side, a decrease in the height and width of the condyle on the working side was found. Conclusions: Those patients who have a preference for unilateral chewing, develop chewing on that side. The jaw may undergo volume enlargement and ossification by mechanical stimulation

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Jaw biodynamic data for 24 patients with chronic unilateral temporomandibular disorder

Cited by 9 publications

References 17 publications

Vertical dimension of occlusion related to mandibular movement during swallowing

Vertical dimension of occlusion related to mandibular movement during swallowing

A comparative study of condyle position in temporomandibular disorder patients with chewing side preference using cone‐beam computed tomography

Morphological changes of the jaw present in unilateral chewing patients

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