Consulta: creatorFacets:"Guimarães,Antonio Sergio"
Registros recuperados: 5
Data/hora: 11/06/2024 12:43:41

Muscle Fiber Type Composition, Fiber Diameter, Capillary Density in Temporalis and Masseter Muscles and Correlation with Bite Force
Provedor de dados: 77
Autores: Guimarães,Thatiana Bastos; Ferreira,Mariana Brandão; Wakamatsu,Alda; Oliveira,Stanley Reis; Guimarães,Antonio Sergio; Suazo Galdames,Iván; Marie,Suely Nagahashi.
The jaw muscles are essential components in the stomatognatic system. Their complex architecture allows them to execute several motor tasks. One of the structural peculiarities is the presence of hybrid and neonatal fibers.We studied the differences of the fiber-type in masseter and temporalis muscles along the first to nineth decades in both genders. Seventy-four (74) samples were analyzed by immunohistochemistry. Slow and fast muscle fibers distribution was similar in both muscles in both genders. Hybrid fiber was observed in all decades, and its frequency decreased significantly (p&lt;0.001) with aging in masseter. Neonatal myosin expression was observed in all decades, its expression was more frequent in masseter (p=0.01), and males in temporalis...
Tipo: Journal article
Palavras-chave: Masseter; Temporalis; Muscle fiber type; Capillary density; Bite force.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200064

Prevalence of the Third Head of the Lateral Pterygoid Muscle: A Magnetic Resonance Image Study
Provedor de dados: 77
Autores: Pompei Filho,Horácio; Guimarães,Antonio Sergio; Suazo Galdames,Iván Claudio.
The lateral pterygoid muscle (LPM) is important in the physiology and dysfunction of the temporomandibular joint (TMJ), which has described the presence of a third head in the lateral pterygoid muscle (THLPM). The purpose of this study was to evaluate the prevalence of THLPM and its relationship with the TMJ disc through magnetic resonance imaging (MRI). It was evaluated 178 MRI of the TMJ of healthy individuals, in images that presented THLPM, and these were defined and measured at the surface inserted into the disc. The prevalence of THLPM was 20.22% (n = 36). Insertion of THLPM was made entirely on the TMJ disc, the average area of insertion was 4.14mm (SD 1.35) in women and 4.67 (SD 2.68) in men, but these differences were not significant. We concluded...
Tipo: Journal article
Palavras-chave: Lateral pterygoid muscle; Temporomandibular joint; Articular disc; Temporomandibular dysfunction.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400014

Anterior Disc Displacement and the Superior Head of Lateral Pterygoid Muscle: A Case-Control Study
Provedor de dados: 77
Autores: Pompei Filho,Horácio; Suazo Galdames,Iván; Zavando,Daniela; Guimarães,Antonio Sergio.
The objective of this study was to assess the association between an increase in the proportion of the superior head of the lateral pterygoid muscle (SHLP) inserted into the temporomandibular joint (TMJ) disc and the presence of anterior disc displacement diagnosed by using MRI. We analyzed 75 images of patients with anterior displacement and 75 controls with normal relationship between the mandibular head and the articular tubercle also diagnosed by MRI. Levels of insertion were measured. Descriptive and analytic statistics were calculated. Analyses of differences were made by Fischer's exact test and also were calculated clinical significance (OR, CI = 95%). The average insertion of SHLP was 71.14% (SD 14.13) in controls and 67.80% (SD.16.23) in cases...
Tipo: Journal article
Palavras-chave: Temporomandibular joint; Lateral pterygoid muscle; Articular disc; Anterior disc displacement.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000200004

Temporomandibular Joint Magnetic Resonance Imaging Analysis in Adults with Steinert's Myotonic Dystrophy
Provedor de dados: 77
Autores: Guimarães,Antonio Sergio; Suazo Galdames,Iván; Marie,Suely K. Nagahashi.
The aim was to analyze the characteristics of the temporomandibular joint (TMJ) in a group of adult patients suffering from Steinert's muscular dystrophy (DM1). This study included 42 adult patients aged between 21 and 69 years (mean = 38.7619; SD = 12.74) who were diagnosed for DM1. Study was conducted using the MRI of right and left TMJ sagittal images taken in maximum intercuspidation position and maximum oral opening without pain, and the following were discussed: a) the quality of the cortical bone in the mandibular fossa, tuberosity, and mandibular head; b) the relationship of mandibular head­disc­joint tuberosity in maximum intercuspidation position; c) the anatomical shape of the articular disc. All patients showed abnormalities in the shape and...
Tipo: Journal article
Palavras-chave: Temporomandibular joint; Steinert's disease; Myotonic dystrophy; Magnetic resonance imaging.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000100047

Mandibular Condyle Position in Maximum Mouth Opening: A Magnetic Resonance Imaging Evaluation
Provedor de dados: 77
Autores: Juca,Katharina Fernandes; Suazo Galdames,Iván Claudio; Guimarães,Antonio Sergio.
The purpose of this study was to analyze the condylar position in the maximum mouth opening in a group of individuals with and without temporomandibular joint disorders (TMD) using corrected magnetic resonance imaging (MRI). It was analyzed the MRIs of 200 temporomandibular joint (TMJ) of 100 adults (25 males and 75 females). The images protocol of the MRIs were in corrected sagittal plane T1, with the patient kept at a maximum mouth opening without pain. All the images were obtained parallel to the Frankfurt plane. The images were split by two lines parallel to the upper base of the image which was obtained parallel to the Frankfurt plane, tangential to the articular tubercle and the condyle of each TMJ, and set along the discrepancy of the condylar...
Tipo: Journal article
Palavras-chave: Temporomandibular joint; Oral opening; Maximal opening mouth; Condylar position; Temporomandibular dysfunction; Articular hypermobility.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300037