Spectral components in electromyograms from four regions of the human masseter, in natural dentate and edentulous subjects with removable prostheses and implants.

Autor: Guzmán-Venegas RA; Laboratorio Integrativo de Biomecánica y Fisiología del Esfuerzo (LIBFE), Escuela de Kinesiología, Facultad de Medicina, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, Santiago, Chile. Electronic address: rguzman@uandes.cl., Palma FH; Laboratorio Integrativo de Biomecánica y Fisiología del Esfuerzo (LIBFE), Escuela de Kinesiología, Facultad de Medicina, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, Santiago, Chile., Biotti P JL; Facultad de Odontología, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, Santiago, Chile., de la Rosa FJB; Laboratorio de Biomecánica, Kinesiología y Cineantropometría, Universidad Pablo de Olavide, Carretera de Utrera km 1, Seville, Spain.
Jazyk: angličtina
Zdroj: Archives of oral biology [Arch Oral Biol] 2018 Jun; Vol. 90, pp. 130-137. Date of Electronic Publication: 2018 Mar 26.
DOI: 10.1016/j.archoralbio.2018.03.010
Abstrakt: Objective: To compare the frequency or spectral components between different regions of the superficial masseter in young natural dentate and total edentulous older adults rehabilitated with removable prostheses and fixed-implant support. A secondary objective was to compare these components between the three groups.
Design: 21 young natural dentate and 28 edentulous (14 with removable prostheses and 14 with fixed-implant support) were assessed. High-density surface electromyography (sEMG) was recorded in four portions of the superficial masseter during submaximal isometric bites. Spectral components were obtained through a spectral analysis of the sEMG signals. An analysis of mixed models was used to compare the spectral components.
Results: In all groups, the spectral components of the anterior portion were lower than in the posterior region (p < 0.05). Both edentulous groups showed lower spectral components and median frequency slope than the natural dentate group (p < 0.05). The removable prostheses group showed the greatest differences with natural dentate group.
Conclusions: There were significant differences in the spectral components recorded in the different regions of the superficial masseter. The lower spectral components and fatigability of older adults rehabilitated with prostheses could be a cause of a greater loss of type II fibers, especially in the removable prostheses group.
(Copyright © 2018 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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