Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study

Twelve adult male Wistar rats (220 g average weight) were divided in 3 experimental groups: GI -15. GII 30 and GIII 60 days, after mandibular molar extraction, with three experimental animals and one control per group. Qualitatively, ultrastructural changes of protein filaments from myofibrils o...

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Autores principales:	Benigno,Maria Ivone Mendes, Liberti,Edson Aparecido, Conde Jr,Airton Mendes, de Sousa Leal,Noélia Maria, Lopes Rodrigues,Karla Emanuelle, Mota,Vanessa Benigno, Amstalden,Eliane Maria Ingrid
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2017
Materias:	Skeletal muscular fibre Masticator muscles Occlusal alterations Temporomandibular joint Transmission electron microscopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200007
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spelling	oai:scielo:S0717-950220170002000072017-08-07Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental StudyBenigno,Maria Ivone MendesLiberti,Edson AparecidoConde Jr,Airton Mendesde Sousa Leal,Noélia MariaLopes Rodrigues,Karla EmanuelleMota,Vanessa BenignoAmstalden,Eliane Maria Ingrid Skeletal muscular fibre Masticator muscles Occlusal alterations Temporomandibular joint Transmission electron microscopy Twelve adult male Wistar rats (220 g average weight) were divided in 3 experimental groups: GI -15. GII 30 and GIII 60 days, after mandibular molar extraction, with three experimental animals and one control per group. Qualitatively, ultrastructural changes of protein filaments from myofibrils of these muscles and ipsilateral to the extractions were observed. Ultrastructure asymmetry and disorganization of Z line and I band, in the experimental group GII, of Medial Pterigoid muscle (MPT) were observed. The temporomandibular dysfunction, stimulated by the unilateral extractions of mandibular molars in rats may lead to modifications in the Z line and I band, which showed to be sensitive to this dysfunction. Changes in the MPT muscle, probably related to its own functional characteristics and major participation in the dynamics of mastication, compared to Masseter were also observed. However, the muscular fibres seem to adapt to the new conditions along the experiment.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.35 n.2 20172017-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200007en10.4067/S0717-95022017000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Skeletal muscular fibre Masticator muscles Occlusal alterations Temporomandibular joint Transmission electron microscopy
spellingShingle	Skeletal muscular fibre Masticator muscles Occlusal alterations Temporomandibular joint Transmission electron microscopy Benigno,Maria Ivone Mendes Liberti,Edson Aparecido Conde Jr,Airton Mendes de Sousa Leal,Noélia Maria Lopes Rodrigues,Karla Emanuelle Mota,Vanessa Benigno Amstalden,Eliane Maria Ingrid Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study
description	Twelve adult male Wistar rats (220 g average weight) were divided in 3 experimental groups: GI -15. GII 30 and GIII 60 days, after mandibular molar extraction, with three experimental animals and one control per group. Qualitatively, ultrastructural changes of protein filaments from myofibrils of these muscles and ipsilateral to the extractions were observed. Ultrastructure asymmetry and disorganization of Z line and I band, in the experimental group GII, of Medial Pterigoid muscle (MPT) were observed. The temporomandibular dysfunction, stimulated by the unilateral extractions of mandibular molars in rats may lead to modifications in the Z line and I band, which showed to be sensitive to this dysfunction. Changes in the MPT muscle, probably related to its own functional characteristics and major participation in the dynamics of mastication, compared to Masseter were also observed. However, the muscular fibres seem to adapt to the new conditions along the experiment.
author	Benigno,Maria Ivone Mendes Liberti,Edson Aparecido Conde Jr,Airton Mendes de Sousa Leal,Noélia Maria Lopes Rodrigues,Karla Emanuelle Mota,Vanessa Benigno Amstalden,Eliane Maria Ingrid
author_facet	Benigno,Maria Ivone Mendes Liberti,Edson Aparecido Conde Jr,Airton Mendes de Sousa Leal,Noélia Maria Lopes Rodrigues,Karla Emanuelle Mota,Vanessa Benigno Amstalden,Eliane Maria Ingrid
author_sort	Benigno,Maria Ivone Mendes
title	Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study
title_short	Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study
title_full	Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study
title_fullStr	Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study
title_full_unstemmed	Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study
title_sort	ultrastructural analysis of masseter and left medial pterigoid muscles, after unilateral mandibular molar extraction: experimental study
publisher	Sociedad Chilena de Anatomía
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200007
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Ultrastructural Analysis of Masseter and Left Medial Pterigoid Muscles, After Unilateral Mandibular Molar Extraction: Experimental Study

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