Influence of Laser therapy and muscle relaxant on the masseter muscle under occlusal wear an ultrastructural study

dc.creatorLisboa, Marcio Vieira
dc.creatorPinheiro, Antonio Luiz Barbosa
dc.creatorSantos, Marcos André Vannier dos
dc.creatorBaptista, Abrahão Fontes
dc.creatorSouza, Ana Paula Cavalcanti de
dc.creatorValença Neto, Alberto de Aguiar Pires
dc.creatorSantos, Jean Nunes dos
dc.date2015-03-20T19:06:24Z
dc.date2015-03-20T19:06:24Z
dc.date2012
dc.date.accessioned2023-09-26T20:20:09Z
dc.date.available2023-09-26T20:20:09Z
dc.identifierLISBOA, 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.
dc.identifier0717-9367
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/9798
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8854523
dc.descriptionThe 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
dc.formatapplication/pdf
dc.languageeng
dc.publisherSociedad Chilena de Anatomía
dc.rightsopen access
dc.subjectTerapia a Laser
dc.subjectUltraestructura
dc.subjectOclusão dental
dc.subjectMúsculo masseter
dc.subjectRelaxante muscular
dc.subjectLasertherapy
dc.subjectUltrastructure
dc.subjectDental occlusion
dc.subjectMasseter muscle relaxant
dc.subjectMuscle relaxant
dc.subjectTerapia a Laser
dc.subjectOclusão dentária
dc.subjectMúsculo Masseter
dc.subjectRatos Wistar
dc.subjectFármacos Neuromusculares
dc.titleInfluence of Laser therapy and muscle relaxant on the masseter muscle under occlusal wear an ultrastructural study
dc.typeArticle


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