Author | Lisboa, Marcio Vieira | |
Author | Pinheiro, Antonio Luiz Barbosa | |
Author | Santos, Marcos André Vannier dos | |
Author | Baptista, Abrahão Fontes | |
Author | Souza, Ana Paula Cavalcanti de | |
Author | Valença Neto, Alberto de Aguiar Pires | |
Author | Santos, Jean Nunes dos | |
Access date | 2015-03-20T19:06:24Z | |
Available date | 2015-03-20T19:06:24Z | |
Document date | 2012 | |
Citation | LISBOA, M. V. Influence of laser therapy and muscle relaxant on the masseter muscle under occlusal wear: an ultrastructural study. International Journal of Morphology, v. 30, n. 3, p. 999-1006, 2012. | pt_BR |
ISSN | 0717-9367 | |
URI | https://www.arca.fiocruz.br/handle/icict/9798 | |
Language | eng | pt_BR |
Publisher | Sociedad Chilena de Anatomía | pt_BR |
Rights | open access | pt_BR |
Subject in Portuguese | Terapia a Laser | pt_BR |
Subject in Portuguese | Ultraestructura | pt_BR |
Subject in Portuguese | Oclusão dental | pt_BR |
Subject in Portuguese | Músculo masseter | pt_BR |
Subject in Portuguese | Relaxante muscular | pt_BR |
Title | Influence of Laser therapy and muscle relaxant on the masseter muscle under occlusal wear an ultrastructural study | pt_BR |
Type | Article | pt_BR |
Abstract | The aim of this study was to analyze the influence of low-intensity laser therapy and muscle relaxant in the
characteristic ultra structural masseter muscle occlusal wear. Animals and Methods: 40 male Wistar rats were randomly divided into four
groups: the control group (GI), occlusal wear (G-II), laser occlusal wear (G-III), and the muscle relaxant occlusal wear (G-IV). Under
general anesthesia given intraperitoneally, animals in groups II, III and IV had unilateral amputation ofÊ upper and lower molar cusps to
simulate an occlusal wear situation. The masseter muscle G-III received laser therapy (830nm, 4J/cm2, 40mW, f ~ 2mm)Ê andÊ the
procedure was subsequently repeated every other day for 14/30 days. G-IV animals were treated with daily injection of dantrolene ¨ (2.5
mg / kg in 0.5 ml of H2O). From 24 hours after the elimination peak. The animals were euthanized with an overdose of anesthesia on days
14 and 30 after the removal of the cusps and the ipsilateral masseter muscle was excised and divided in two, one half was routinely
processed for light microscopy and other for electron microscopy. There was no statistical difference between each experimental group
and the control and between periods in each experimental group. However, the muscle fibers in the G-II showed the most pronounced
changes. There is no causal relationship between muscles fibers injuries and occlusion and, despite signs of muscular tissue injury were
more evident in the occlusal wear group. Results indicates a moderate action of laser therapy and muscle relaxants in skeletal muscle | pt_BR |
Affilliation | Universidade Federal da Bahia. Faculdade de Odontologia. Centro de Biofotónica. Salvador, BA, Brasil | pt_BR |
Affilliation | Universidade Federal da Bahia. Faculdade de Odontologia. Centro de Biofotónica. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Laboratório de Biomorfologia Parasitária. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Laboratório de Biomorfologia Parasitária. Salvador, BA, Brasil | pt_BR |
Affilliation | Universidade Federal da Bahia. Faculdade de Odontologia. Centro de Biofotónica. Salvador, BA, Brasil | pt_BR |
Affilliation | Universidade Federal da Bahia. Faculdade de Odontologia. Centro de Biofotónica. Salvador, BA, Brasil | pt_BR |
Affilliation | Universidade Federal da Bahia. Faculdade de Odontologia. Centro de Biofotónica. Salvador, BA, Brasil | pt_BR |
Subject | Lasertherapy | pt_BR |
Subject | Ultrastructure | pt_BR |
Subject | Dental occlusion | pt_BR |
Subject | Masseter muscle relaxant | pt_BR |
Subject | Muscle relaxant | pt_BR |
DeCS | Terapia a Laser | pt_BR |
DeCS | Oclusão dentária | pt_BR |
DeCS | Músculo Masseter | pt_BR |
DeCS | Ratos Wistar | pt_BR |
DeCS | Fármacos Neuromusculares | pt_BR |