Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400009 |
Resumo: | OBJECTIVE: The aim of this study was to evaluate whether vertical facial patterns influence maximal occlusal force (MOF), masticatory muscle electromyographic (EMG) activity, and medial mandibular flexure (MMF). MATERIAL AND METHODS: Seventy-eight dentate subjects were divided into 3 groups by Ricketts's analysis: brachyfacial, mesofacial and dolychofacial. Maximum occlusal force in the molar region was bilaterally measured with a force transducer. The electromyographic activities of the masseter and anterior temporal muscles were recorded during maximal voluntary clenching. Medial mandibular flexure was calculated by subtracting the intermolar distance of maximum opening or protrusion from the distance in the rest position. The data were analyzed using ANOVA followed by Tukey's HSD test. The significance level was set at 5%. RESULTS: Data on maximum occlusal force showed that shorter faces had higher occlusal forces (P<0.0001). Brachyfacial subjects presented higher levels of masseter electromyographic activity and medial mandibular flexure, followed by the mesofacial and dolychofacial groups. Additionally, dolychofacial subjects showed significantly lower electromyographic temporalis activities (P<0.05). CONCLUSION: Within the limitations of the study, it may be concluded that maximum occlusal force, masticatory muscle activity and medial mandibular flexure were influenced by the vertical facial pattern. |
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Journal of applied oral science (Online) |
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Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial typesVertical dimensionBite forceElectromyographyMasticatory musclesMandibleOBJECTIVE: The aim of this study was to evaluate whether vertical facial patterns influence maximal occlusal force (MOF), masticatory muscle electromyographic (EMG) activity, and medial mandibular flexure (MMF). MATERIAL AND METHODS: Seventy-eight dentate subjects were divided into 3 groups by Ricketts's analysis: brachyfacial, mesofacial and dolychofacial. Maximum occlusal force in the molar region was bilaterally measured with a force transducer. The electromyographic activities of the masseter and anterior temporal muscles were recorded during maximal voluntary clenching. Medial mandibular flexure was calculated by subtracting the intermolar distance of maximum opening or protrusion from the distance in the rest position. The data were analyzed using ANOVA followed by Tukey's HSD test. The significance level was set at 5%. RESULTS: Data on maximum occlusal force showed that shorter faces had higher occlusal forces (P<0.0001). Brachyfacial subjects presented higher levels of masseter electromyographic activity and medial mandibular flexure, followed by the mesofacial and dolychofacial groups. Additionally, dolychofacial subjects showed significantly lower electromyographic temporalis activities (P<0.05). CONCLUSION: Within the limitations of the study, it may be concluded that maximum occlusal force, masticatory muscle activity and medial mandibular flexure were influenced by the vertical facial pattern.Faculdade De Odontologia De Bauru - USP2011-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400009Journal of Applied Oral Science v.19 n.4 2011reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S1678-77572011005000008info:eu-repo/semantics/openAccessCustodio,WilliamGomes,Simone Guimarães FariasFaot,FernandaGarcia,Renata Cunha Matheus RodriguesDel Bel Cury,Altair Antoninhaeng2014-06-11T00:00:00Zoai:scielo:S1678-77572011000400009Revistahttp://www.scielo.br/jaosPUBhttps://old.scielo.br/oai/scielo-oai.php||jaos@usp.br1678-77651678-7757opendoar:2014-06-11T00:00Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
title |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
spellingShingle |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types Custodio,William Vertical dimension Bite force Electromyography Masticatory muscles Mandible |
title_short |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
title_full |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
title_fullStr |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
title_full_unstemmed |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
title_sort |
Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types |
author |
Custodio,William |
author_facet |
Custodio,William Gomes,Simone Guimarães Farias Faot,Fernanda Garcia,Renata Cunha Matheus Rodrigues Del Bel Cury,Altair Antoninha |
author_role |
author |
author2 |
Gomes,Simone Guimarães Farias Faot,Fernanda Garcia,Renata Cunha Matheus Rodrigues Del Bel Cury,Altair Antoninha |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Custodio,William Gomes,Simone Guimarães Farias Faot,Fernanda Garcia,Renata Cunha Matheus Rodrigues Del Bel Cury,Altair Antoninha |
dc.subject.por.fl_str_mv |
Vertical dimension Bite force Electromyography Masticatory muscles Mandible |
topic |
Vertical dimension Bite force Electromyography Masticatory muscles Mandible |
description |
OBJECTIVE: The aim of this study was to evaluate whether vertical facial patterns influence maximal occlusal force (MOF), masticatory muscle electromyographic (EMG) activity, and medial mandibular flexure (MMF). MATERIAL AND METHODS: Seventy-eight dentate subjects were divided into 3 groups by Ricketts's analysis: brachyfacial, mesofacial and dolychofacial. Maximum occlusal force in the molar region was bilaterally measured with a force transducer. The electromyographic activities of the masseter and anterior temporal muscles were recorded during maximal voluntary clenching. Medial mandibular flexure was calculated by subtracting the intermolar distance of maximum opening or protrusion from the distance in the rest position. The data were analyzed using ANOVA followed by Tukey's HSD test. The significance level was set at 5%. RESULTS: Data on maximum occlusal force showed that shorter faces had higher occlusal forces (P<0.0001). Brachyfacial subjects presented higher levels of masseter electromyographic activity and medial mandibular flexure, followed by the mesofacial and dolychofacial groups. Additionally, dolychofacial subjects showed significantly lower electromyographic temporalis activities (P<0.05). CONCLUSION: Within the limitations of the study, it may be concluded that maximum occlusal force, masticatory muscle activity and medial mandibular flexure were influenced by the vertical facial pattern. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572011000400009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-77572011005000008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Faculdade De Odontologia De Bauru - USP |
publisher.none.fl_str_mv |
Faculdade De Odontologia De Bauru - USP |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science v.19 n.4 2011 reponame:Journal of applied oral science (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Journal of applied oral science (Online) |
collection |
Journal of applied oral science (Online) |
repository.name.fl_str_mv |
Journal of applied oral science (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||jaos@usp.br |
_version_ |
1748936437049327616 |