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Occlusal force, electromyographic activity of masticatory muscles and mandibular flexure of subjects with different facial types
Custodio, William; Gomes, Simone Guimarães Farias; Faot, Fernanda; Garcia, Renata Cunha Matheus Rodrigues; Del Bel Cury, Altair Antoninha.
  • Custodio, William; State University of Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontology. Piracicaba. BR
  • Gomes, Simone Guimarães Farias; State University of Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontology. Piracicaba. BR
  • Faot, Fernanda; Federal University of Pelotas. Dentistry School. Department of Dental Prosthodontics. Pelotas. BR
  • Garcia, Renata Cunha Matheus Rodrigues; State University of Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontology. Piracicaba. BR
  • Del Bel Cury, Altair Antoninha; State University of Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontology. Piracicaba. BR
J. appl. oral sci ; 19(4): 343-349, July-Aug. 2011. tab
Artículo en Inglés | LILACS | ID: lil-599759
ABSTRACT

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 percent.

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.
Asunto(s)


Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Fuerza de la Mordida / Cara / Mandíbula / Músculos Masticadores Límite: Adulto / Femenino / Humanos / Masculino Idioma: Inglés Revista: J. appl. oral sci Asunto de la revista: Odontología Año: 2011 Tipo del documento: Artículo / Documento de proyecto País de afiliación: Brasil Institución/País de afiliación: Federal University of Pelotas/BR / State University of Campinas/BR

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Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Fuerza de la Mordida / Cara / Mandíbula / Músculos Masticadores Límite: Adulto / Femenino / Humanos / Masculino Idioma: Inglés Revista: J. appl. oral sci Asunto de la revista: Odontología Año: 2011 Tipo del documento: Artículo / Documento de proyecto País de afiliación: Brasil Institución/País de afiliación: Federal University of Pelotas/BR / State University of Campinas/BR