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dc.contributor.authorSantana Mora, Urbano Alejandro
dc.contributor.authorLópez Cedrún, José Luis
dc.contributor.authorSuárez Quintanilla, Juan Antonio
dc.contributor.authorVarela Centelles, Pablo Ignacio
dc.contributor.authorMora Bermúdez, María Jesús José
dc.contributor.authorSilva Domínguez, José Luís da
dc.contributor.authorFigueiredo Costa, Fernanda
dc.contributor.authorSantana Penín, Urbano Antonio
dc.date.accessioned2021-07-30T13:09:01Z
dc.date.available2021-07-30T13:09:01Z
dc.date.issued2021
dc.identifier.citationAnnals of Anatomy, 238 (2021), 151793. https://doi.org/10.1016/j.aanat.2021.151793
dc.identifier.issn0940-9602
dc.identifier.urihttp://hdl.handle.net/10347/26667
dc.description.abstractIntroduction: The etiologies of most chronic temporomandibular joint disorders are unknown. However, an association between habitual chewing on a particular side and chronic temporomandibular joint disorders has been reported. The aim of this study was to investigate the differences between sides (affected vs unaffected) of biodynamic factors (including lateral dental guidance determined by dental anatomy) or condylar path angles (determined by temporomandibular joint morphology) and chewing function (physiological alternate chewing vs single habitual chewing side). The study scope was to investigate possible etiological factors to improve the understanding of temporomandibular joint disorders. The null hypothesis was that no difference would be found between sides that are or are not affected by chronic temporomandibular joint disorders in chewing function or in levels of dental or temporomandibular joint remodeling. Methods: This cross-sectional, double-blind study involved 24 adults with substantial, chronic, unilateral symptoms diagnosed as temporomandibular joint disorders. Chewing function, temporomandibular joint remodeling (using axiography) and dental anatomy (lateral guidance angles using kinesiography) were assessed. Results: Habitual chewing on one particular side was observed in 17 of 24 participants; significantly more (n = 15) chewed on the affected side than on the unaffected side (P = 0.002 in a two-tailed Fisher’s exact test; risk estimate = 4.5; 95% CI 1.326–15.277). The condylar path (CP) angle was steeper on the affected side than on the unaffected side (mean (standard deviation) = 50.52° (9.98°) versus 45.50° (7.98°); P = 0.002 in a two-tailed t-test). The lateral guidance (LG) angles were flatter on the affected side in all 24 participants. Conclusion: Our results suggest that habitual chewing on one side may be associated with increasing condylar path, with flattening lateral guidance angles, and also with chronic temporomandibular joint disorder on the habitual chewing side
dc.description.sponsorshipThis study was supported by the Carlos III Institute of Health (Ministry of Science and Innovation of the Government of Spain and the European Development Fund, ‘Una manera de hacer Europa’) (grant no. PI11/02507). The design, management, analysis, and reporting of the study are entirely independent of the Carlos III Institute of Health
dc.language.isoeng
dc.publisherElsevier
dc.rights© 2021 The Authors. Published by Elsevier GmbH. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectTMJ
dc.subjectTemporomandibular joint
dc.subjectTMD
dc.subjectTemporomandibular joint disorder
dc.subjectICC
dc.subjectIntraclass correlation coefficient
dc.subjectMRI
dc.subjectMagnetic resonance imaging
dc.subjectAi asymmetry index
dc.subjectCP condylar path
dc.subjectLG lateral guidance
dc.subjectOR odds ratio
dc.titleAsymmetry of dental or joint anatomy or impaired chewing function contribute to chronic temporomandibular joint disorders
dc.typejournal article
dc.identifier.doi10.1016/j.aanat.2021.151793
dc.relation.publisherversionhttps://doi.org/10.1016/j.aanat.2021.151793
dc.type.hasVersionVoR
dc.rights.accessRightsopen access
dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Ciencias Morfolóxicas
dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Cirurxía e Especialidades Médico-Cirúrxicas
dc.description.peerreviewedSI


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© 2021 The Authors. Published by Elsevier GmbH. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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 © 2021 The Authors. Published by Elsevier GmbH. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)





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