Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados

Background: As a consequence of a growth inhibition of middle third of the face, cleft lip surgery could lead to a pseudoprognathism. However, this is not always the case. Also, when facial architecture is changed, the activity of muscles such as the masseter could be disturbed. Aim: To study masset...

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Autores principales:	Ogalde L,Armando, Cárdenas A,Hernán, González N,José, Montoya S,Héctor
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2000
Materias:	Cleft lip Masseter muscle Prognathism
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000900007
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spelling	oai:scielo:S0034-988720000009000072005-11-15Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisuradosOgalde L,ArmandoCárdenas A,HernánGonzález N,JoséMontoya S,Héctor Cleft lip Masseter muscle Prognathism Background: As a consequence of a growth inhibition of middle third of the face, cleft lip surgery could lead to a pseudoprognathism. However, this is not always the case. Also, when facial architecture is changed, the activity of muscles such as the masseter could be disturbed. Aim: To study masseter electromyographic activity in operated cleft lip patients. Material and methods: Forty two patients with cleft lip (25 male, aged 13 to 35 years old) were studied. All were operated during their first year of life. An electromyography of masseter muscle was performed and from a teleradiography, ANB and Gonion angles were obtained. Forty healthy subjects conformed the control group Results: The sample was divided in two groups. A group of 20 patients had a significantly lower EMG voltaje than control subjects (662 ± 228 and 1511 ± 340 µV respectively, p < 0.001). Only seven patients had an anteriorly inverted bite with a mean ANB of + 1.7 and a mean molar relation of -4.8, figures that confirm the presence of pseudoprognathism. Conclusions: Eighty three percent of cleft lip patients do not have cephalometric parameters of pseudoprognathism and half of the patients have a lower masseter activity (Rev Méd Chile 2000; 128: 1005-1010)info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.128 n.9 20002000-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000900007es10.4067/S0034-98872000000900007
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Cleft lip Masseter muscle Prognathism
spellingShingle	Cleft lip Masseter muscle Prognathism Ogalde L,Armando Cárdenas A,Hernán González N,José Montoya S,Héctor Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
description	Background: As a consequence of a growth inhibition of middle third of the face, cleft lip surgery could lead to a pseudoprognathism. However, this is not always the case. Also, when facial architecture is changed, the activity of muscles such as the masseter could be disturbed. Aim: To study masseter electromyographic activity in operated cleft lip patients. Material and methods: Forty two patients with cleft lip (25 male, aged 13 to 35 years old) were studied. All were operated during their first year of life. An electromyography of masseter muscle was performed and from a teleradiography, ANB and Gonion angles were obtained. Forty healthy subjects conformed the control group Results: The sample was divided in two groups. A group of 20 patients had a significantly lower EMG voltaje than control subjects (662 ± 228 and 1511 ± 340 µV respectively, p < 0.001). Only seven patients had an anteriorly inverted bite with a mean ANB of + 1.7 and a mean molar relation of -4.8, figures that confirm the presence of pseudoprognathism. Conclusions: Eighty three percent of cleft lip patients do not have cephalometric parameters of pseudoprognathism and half of the patients have a lower masseter activity (Rev Méd Chile 2000; 128: 1005-1010)
author	Ogalde L,Armando Cárdenas A,Hernán González N,José Montoya S,Héctor
author_facet	Ogalde L,Armando Cárdenas A,Hernán González N,José Montoya S,Héctor
author_sort	Ogalde L,Armando
title	Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
title_short	Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
title_full	Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
title_fullStr	Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
title_full_unstemmed	Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
title_sort	frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados
publisher	Sociedad Médica de Santiago
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000900007
work_keys_str_mv	AT ogaldelarmando frecuenciadepseudoprognatismoyactividaddelmusculomaseteroenpacientesfisurados AT cardenasahernan frecuenciadepseudoprognatismoyactividaddelmusculomaseteroenpacientesfisurados AT gonzaleznjose frecuenciadepseudoprognatismoyactividaddelmusculomaseteroenpacientesfisurados AT montoyashector frecuenciadepseudoprognatismoyactividaddelmusculomaseteroenpacientesfisurados
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Frecuencia de pseudoprognatismo y actividad del músculo masetero en pacientes fisurados

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