MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)

The objective of the present study was to analyze morphological aspects of the structures of the stomatognathic system and their relationship with malocclusion. For this purpose, we determined the morphological alterations that occur in the masseter muscle of guinea pigs (Cavia porcellus) after the...

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Autores principales:	Mardegan Issa,João Paulo, Mizusaki Iyomasa,Mamie, Ioshie Mizusaki,Cristina, Watanabe,Ii-sei, Mandarim de Lacerda,Carlos Alberto
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2004
Materias:	Masseter muscle Morphology Light microscopy Muscle fibers Guinea pig
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300009
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spelling	oai:scielo:S0717-950220040003000092004-10-26MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)Mardegan Issa,João PauloMizusaki Iyomasa,MamieIoshie Mizusaki,CristinaWatanabe,Ii-seiMandarim de Lacerda,Carlos Alberto Masseter muscle Morphology Light microscopy Muscle fibers Guinea pig The objective of the present study was to analyze morphological aspects of the structures of the stomatognathic system and their relationship with malocclusion. For this purpose, we determined the morphological alterations that occur in the masseter muscle of guinea pigs (Cavia porcellus) after the induction of malocclusion by extraction of the left upper molars. Animals were divided into two groups (malocclusion and control group) and submitted to macroscopic, biometric and light microscopic analyses. The results showed a reduction in the width of the masseter muscle mainly in left side in the malocclusion group 60 days after unilateral extraction. Microscopically, round and polygonal muscle fibers of several diameters were observed, and altered muscle fibers with a central nucleus, degenerating fibers and macrophages were noted in more deeply fasciculiinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.22 n.3 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300009en10.4067/S0717-95022004000300009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Masseter muscle Morphology Light microscopy Muscle fibers Guinea pig
spellingShingle	Masseter muscle Morphology Light microscopy Muscle fibers Guinea pig Mardegan Issa,João Paulo Mizusaki Iyomasa,Mamie Ioshie Mizusaki,Cristina Watanabe,Ii-sei Mandarim de Lacerda,Carlos Alberto MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)
description	The objective of the present study was to analyze morphological aspects of the structures of the stomatognathic system and their relationship with malocclusion. For this purpose, we determined the morphological alterations that occur in the masseter muscle of guinea pigs (Cavia porcellus) after the induction of malocclusion by extraction of the left upper molars. Animals were divided into two groups (malocclusion and control group) and submitted to macroscopic, biometric and light microscopic analyses. The results showed a reduction in the width of the masseter muscle mainly in left side in the malocclusion group 60 days after unilateral extraction. Microscopically, round and polygonal muscle fibers of several diameters were observed, and altered muscle fibers with a central nucleus, degenerating fibers and macrophages were noted in more deeply fasciculi
author	Mardegan Issa,João Paulo Mizusaki Iyomasa,Mamie Ioshie Mizusaki,Cristina Watanabe,Ii-sei Mandarim de Lacerda,Carlos Alberto
author_facet	Mardegan Issa,João Paulo Mizusaki Iyomasa,Mamie Ioshie Mizusaki,Cristina Watanabe,Ii-sei Mandarim de Lacerda,Carlos Alberto
author_sort	Mardegan Issa,João Paulo
title	MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)
title_short	MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)
title_full	MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)
title_fullStr	MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)
title_full_unstemmed	MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)
title_sort	morphological alterations in the masseter muscle induced by unilateral extraction of the upper molars in guinea pigs (cavia porcellus)
publisher	Sociedad Chilena de Anatomía
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300009
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MORPHOLOGICAL ALTERATIONS IN THE MASSETER MUSCLE INDUCED BY UNILATERAL EXTRACTION OF THE UPPER MOLARS IN GUINEA PIGS (Cavia porcellus)

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