The purpose of this study was to investigate correlations between masseter muscle activity and ce... more The purpose of this study was to investigate correlations between masseter muscle activity and cephalometric measures in Angle's class III dental malocclusion under the clinical rest position. Eight volunteers, both sex, age 7-12, were submitted to an electromyographic analysis of the masseter muscle, subdivided in the upper, medium and lower regions, and to a cephalometric analysis of 15 angle and linear measurements. After normalization, the data was subjected to a statistical, non-parametric Spearman correlation test, by means of the SPSS 12.0 program. Statistically significant correlations were observed between the clinical rest condition before and after the execution of exercises (a serie of mandibular movements), and the cephalometric measurements angle SN GoGn, angle SNA, angle SNB, angle SND, upper incisive. NA angle, upper incisive-NA distance, lower incisive. NB angle, lower incisive-NB distance and angle IMPA, and the different regions of the masseter muscle. The sig...
Desordens decorrentes de danos ou doencas relacionadas a ATM afetam o aparelho mastigador como um... more Desordens decorrentes de danos ou doencas relacionadas a ATM afetam o aparelho mastigador como um todo e sao caracterizadas como desordens temporomandibulares (DTM). Sabe-se que cerca de sete por cento da populacao mundial requer tratamento para as DTM. Tecidos cartilaginosos, como os que constituem o disco articular da ATM, possuem uma capacidade limitada de regeneracao, e ainda nao existem tecnicas e metodos fidedignos que estimulem o crescimento de um novo tecido, capaz de auxiliar o tratamento de traumas e doencas degenerativas. O tratamento com laser de baixa potencia e uma das terapias utilizadas e, por isto, torna-se imprescindivel o conhecimento de suas acoes sob o ponto de vista celular e tecidual. Para tal, foram utilizados 24 ratos Lewis machos divididos em quatro grupos: GC, grupo controle; grupo GD, animais em que foi administrada a toxina botulinica; grupo GL, animais que receberam o tratamento com o laser de baixa potencia; grupo GDL, animais em que foi administrada a toxina botulinica e em seguida, submetidos a terapia com o laser de baixa potencia. Foi realizada analise morfologica por meio de cortes histologicos corados por HE, AT e picrosirius e; analise bioquimica por meio de eletroforese em gel SDS-poliacrilamida e dosagem de proteinas. Com base nos resultados morfologicos e bioquimicos, conclui-se que o modelo de DTM proposto mostrou-se satisfatorio para estudos desta doenca. Por outro lado, a terapia com o laser deve submeter seus protocolos clinicos a uma reavaliacao, visto que a mesma apresentou resultados controversos do ponto de vista tecidual por ter promovido a sintese de alguns componentes da matriz extracelular e a desestruturacao de outros essenciais ao bom funcionamento da articulacao envolvida. Abstract
Objectivethe possible morphological alterations of the palatal mucosa in rats subject to a diet o... more Objectivethe possible morphological alterations of the palatal mucosa in rats subject to a diet of alcohol. presented a greater gain in body mass in relation to the treated animals (p<0.05). However, the treated animals did not lose weight during the experiment; on the contrary, they gained body mass, despite gaining less when compared to the control. In the ultra-structure of the treated group, an increase in inter-cellular space, fusion of the secretory granules and the presence of cells in a degenerative state were observed. Conclusionbe deduced that there were serious morphological alterations in the palatal mucosa of rats subject to an alcoholic diet. Indexing terms: Alcoholism. Anatomy & histology. Mouth mucosa.
OBJECTIVE: To measure radiologically obtained skull diameters and, based on these data, calculati... more OBJECTIVE: To measure radiologically obtained skull diameters and, based on these data, calculating the cranial index and size to compare with diameter measurements and indices reported in the literature, particularly those reported by Haas. MATERIALS AND METHODS: The present study evaluated 732 individuals with no cranial disease, whose skull diameters were measured, Subsequently, the authors calculated the cranial index and size which demonstrate the different phases of the skull growth by inner-table to inner-table measurements. RESULTS: The comparative study of diameters averages by inner-table measurements has demonstrated a clearly progressive skull growth in the first year of life for both genders, and a slower growth as from the second year. Overall diameters averages did not present any significant difference between male and female individuals. CONCLUSION: Cranial index and size are good skull growth indicators, especially in the first four years of life, a period characte...
Resumen pt: Os disturbios que afetam a coluna lombar sao muito comuns, sendo necessarias ferramen... more Resumen pt: Os disturbios que afetam a coluna lombar sao muito comuns, sendo necessarias ferramentas confiaveis para a avaliacao clinica. O objetivo do estudo foi av...
A disfuncao femoropatelar e causada por um desequilibrio muscular entre as porcoes medial e later... more A disfuncao femoropatelar e causada por um desequilibrio muscular entre as porcoes medial e lateral do musculo quadriceps. Dessa forma, o tratamento enfatiza o fortalecimento seletivo do musculo vasto medial obliquo, promovendo assim um realinhamento do aparelho extensor. O objetivo deste estudo foi avaliar o efeito da estimulacao eletrica neuromuscular por meio do torque isometrico e area de seccao transversa do musculo quadriceps e atividade eletromiografica da porcao obliqua dos musculos vasto medial e vasto lateral, em individuos normais e portadores de disfuncao femoropatelar. Participaram do estudo 28 voluntarias sedentarias (14 saudaveis e 14 portadoras da disfuncao). Foram realizados dois treinos: a eletroestimulacao isoladamente e a associacao com a contracao isometrica voluntaria. Para o fortalecimento seletivo do musculo vasto medial obliquo e adutor magno foi utilizada uma corrente de media frequencia por um periodo de 24 dias. A analise eletromiografica por meio do prot...
Brazilian Journal of Kinanthropometry and Human Performance
DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n1p1 Although it is a widely used resource for th... more DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n1p1 Although it is a widely used resource for the treatment of musculoskeletal injuries, immobilization causes deleterious effects in muscle tissue after a short period of time. This study aimed to evaluate the gastrocnemius and tibialis anterior muscles of obese and protein malnourished animals under joint immobilization condition. Overall, 28 adult male mice were used (C57 / BL6), being divided into four groups (N = 7): Control Group (CG), Immobilized Control Group (ICG), Immobilized Obese Group (IOG) and Immobilized Malnourished Group (IMG). The immobilization protocol was performed by the use of adhesive tape and plaster. The conditions and obesity and protein malnutrition have been developed through the ingestion of diets specific for each group of animals. The histomorphometric analysis of muscles evaluated area and the diameter of muscle fibers. All immobilized groups showed reduction in the area and diameter of muscle fibers w...
To investigate morphological and biochemical changes in an experimental model of temporomandibula... more To investigate morphological and biochemical changes in an experimental model of temporomandibular joint (TMJ) arthritis, as well as examine contralateral joint involvement and morphometric aspects of masticatory muscles in affected animals. Forty Wistar rats were allocated into three groups, as follows: a healthy control group (HG); and a group with arthritis induced in the left TMJ (IG); and a contralateral group with noninflamed right TMJ (CG). Arthritis was induced by intra-articular injection of 50 μL of Complete Freund's Adjuvant (CFA). Morphological analysis was performed using histological sections of TMJs stained with hematoxylin-eosin, picrosirius and toluidine blue. In addition, histomorphometric analyses of the articular cartilage, articular disc and masticatory muscles, were performed. Biochemical analysis of TMJ tissues included dosage of sulfated glycosaminoglycans (GAGs), zymography of the Matrix Metalloproteinases (MMPs) 2 and 9 and ELISA for the cytokines IL-6,...
The purpose of this study was to investigate correlations between masseter muscle activity and ce... more The purpose of this study was to investigate correlations between masseter muscle activity and cephalometric measures in Angle's class III dental malocclusion under the clinical rest position. Eight volunteers, both sex, age 7-12, were submitted to an electromyographic analysis of the masseter muscle, subdivided in the upper, medium and lower regions, and to a cephalometric analysis of 15 angle and linear measurements. After normalization, the data was subjected to a statistical, non-parametric Spearman correlation test, by means of the SPSS 12.0 program. Statistically significant correlations were observed between the clinical rest condition before and after the execution of exercises (a serie of mandibular movements), and the cephalometric measurements angle SN GoGn, angle SNA, angle SNB, angle SND, upper incisive. NA angle, upper incisive-NA distance, lower incisive. NB angle, lower incisive-NB distance and angle IMPA, and the different regions of the masseter muscle. The sig...
Desordens decorrentes de danos ou doencas relacionadas a ATM afetam o aparelho mastigador como um... more Desordens decorrentes de danos ou doencas relacionadas a ATM afetam o aparelho mastigador como um todo e sao caracterizadas como desordens temporomandibulares (DTM). Sabe-se que cerca de sete por cento da populacao mundial requer tratamento para as DTM. Tecidos cartilaginosos, como os que constituem o disco articular da ATM, possuem uma capacidade limitada de regeneracao, e ainda nao existem tecnicas e metodos fidedignos que estimulem o crescimento de um novo tecido, capaz de auxiliar o tratamento de traumas e doencas degenerativas. O tratamento com laser de baixa potencia e uma das terapias utilizadas e, por isto, torna-se imprescindivel o conhecimento de suas acoes sob o ponto de vista celular e tecidual. Para tal, foram utilizados 24 ratos Lewis machos divididos em quatro grupos: GC, grupo controle; grupo GD, animais em que foi administrada a toxina botulinica; grupo GL, animais que receberam o tratamento com o laser de baixa potencia; grupo GDL, animais em que foi administrada a toxina botulinica e em seguida, submetidos a terapia com o laser de baixa potencia. Foi realizada analise morfologica por meio de cortes histologicos corados por HE, AT e picrosirius e; analise bioquimica por meio de eletroforese em gel SDS-poliacrilamida e dosagem de proteinas. Com base nos resultados morfologicos e bioquimicos, conclui-se que o modelo de DTM proposto mostrou-se satisfatorio para estudos desta doenca. Por outro lado, a terapia com o laser deve submeter seus protocolos clinicos a uma reavaliacao, visto que a mesma apresentou resultados controversos do ponto de vista tecidual por ter promovido a sintese de alguns componentes da matriz extracelular e a desestruturacao de outros essenciais ao bom funcionamento da articulacao envolvida. Abstract
Objectivethe possible morphological alterations of the palatal mucosa in rats subject to a diet o... more Objectivethe possible morphological alterations of the palatal mucosa in rats subject to a diet of alcohol. presented a greater gain in body mass in relation to the treated animals (p<0.05). However, the treated animals did not lose weight during the experiment; on the contrary, they gained body mass, despite gaining less when compared to the control. In the ultra-structure of the treated group, an increase in inter-cellular space, fusion of the secretory granules and the presence of cells in a degenerative state were observed. Conclusionbe deduced that there were serious morphological alterations in the palatal mucosa of rats subject to an alcoholic diet. Indexing terms: Alcoholism. Anatomy & histology. Mouth mucosa.
OBJECTIVE: To measure radiologically obtained skull diameters and, based on these data, calculati... more OBJECTIVE: To measure radiologically obtained skull diameters and, based on these data, calculating the cranial index and size to compare with diameter measurements and indices reported in the literature, particularly those reported by Haas. MATERIALS AND METHODS: The present study evaluated 732 individuals with no cranial disease, whose skull diameters were measured, Subsequently, the authors calculated the cranial index and size which demonstrate the different phases of the skull growth by inner-table to inner-table measurements. RESULTS: The comparative study of diameters averages by inner-table measurements has demonstrated a clearly progressive skull growth in the first year of life for both genders, and a slower growth as from the second year. Overall diameters averages did not present any significant difference between male and female individuals. CONCLUSION: Cranial index and size are good skull growth indicators, especially in the first four years of life, a period characte...
Resumen pt: Os disturbios que afetam a coluna lombar sao muito comuns, sendo necessarias ferramen... more Resumen pt: Os disturbios que afetam a coluna lombar sao muito comuns, sendo necessarias ferramentas confiaveis para a avaliacao clinica. O objetivo do estudo foi av...
A disfuncao femoropatelar e causada por um desequilibrio muscular entre as porcoes medial e later... more A disfuncao femoropatelar e causada por um desequilibrio muscular entre as porcoes medial e lateral do musculo quadriceps. Dessa forma, o tratamento enfatiza o fortalecimento seletivo do musculo vasto medial obliquo, promovendo assim um realinhamento do aparelho extensor. O objetivo deste estudo foi avaliar o efeito da estimulacao eletrica neuromuscular por meio do torque isometrico e area de seccao transversa do musculo quadriceps e atividade eletromiografica da porcao obliqua dos musculos vasto medial e vasto lateral, em individuos normais e portadores de disfuncao femoropatelar. Participaram do estudo 28 voluntarias sedentarias (14 saudaveis e 14 portadoras da disfuncao). Foram realizados dois treinos: a eletroestimulacao isoladamente e a associacao com a contracao isometrica voluntaria. Para o fortalecimento seletivo do musculo vasto medial obliquo e adutor magno foi utilizada uma corrente de media frequencia por um periodo de 24 dias. A analise eletromiografica por meio do prot...
Brazilian Journal of Kinanthropometry and Human Performance
DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n1p1 Although it is a widely used resource for th... more DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n1p1 Although it is a widely used resource for the treatment of musculoskeletal injuries, immobilization causes deleterious effects in muscle tissue after a short period of time. This study aimed to evaluate the gastrocnemius and tibialis anterior muscles of obese and protein malnourished animals under joint immobilization condition. Overall, 28 adult male mice were used (C57 / BL6), being divided into four groups (N = 7): Control Group (CG), Immobilized Control Group (ICG), Immobilized Obese Group (IOG) and Immobilized Malnourished Group (IMG). The immobilization protocol was performed by the use of adhesive tape and plaster. The conditions and obesity and protein malnutrition have been developed through the ingestion of diets specific for each group of animals. The histomorphometric analysis of muscles evaluated area and the diameter of muscle fibers. All immobilized groups showed reduction in the area and diameter of muscle fibers w...
To investigate morphological and biochemical changes in an experimental model of temporomandibula... more To investigate morphological and biochemical changes in an experimental model of temporomandibular joint (TMJ) arthritis, as well as examine contralateral joint involvement and morphometric aspects of masticatory muscles in affected animals. Forty Wistar rats were allocated into three groups, as follows: a healthy control group (HG); and a group with arthritis induced in the left TMJ (IG); and a contralateral group with noninflamed right TMJ (CG). Arthritis was induced by intra-articular injection of 50 μL of Complete Freund's Adjuvant (CFA). Morphological analysis was performed using histological sections of TMJs stained with hematoxylin-eosin, picrosirius and toluidine blue. In addition, histomorphometric analyses of the articular cartilage, articular disc and masticatory muscles, were performed. Biochemical analysis of TMJ tissues included dosage of sulfated glycosaminoglycans (GAGs), zymography of the Matrix Metalloproteinases (MMPs) 2 and 9 and ELISA for the cytokines IL-6,...
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