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Registros recuperados: 11
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Craniofacial Morphometry for Craniofacial Implant International Journal of Morphology
Olate,Sergio; de Moraes,Paulo Hemerson; Caria,Paulo Henrique Ferreira; Netto,Henrique Duque de Miranda Chaves; Barbosa,José Ricardo de Albergaria.
Craniofacial implants are being increasingly used to treat patients with sequelae of oncological resections, trauma, and congenital deficiencies, among other issues. The aim of this investigation was to establish the minimum and maximum bone dimensions present in the most used places for the insertion of craniofacial implants. A descriptive study was designed analyzing 40 human skulls using cone-beam computed tomography; in the volumetric reconstruction the points most often used in clinical investigations for the insertion of implants were selected, representing the orbital, perinasal, zygomatic bone and periauricular regions, measuring the distance between the cortical bones on the sagittal, axial and coronal planes; comparisons between gender and with...
Tipo: Journal article Palavras-chave: Craniofacial implants; Bone morphometry; Extra-oral implant.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300063
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Morphological Description of Mandibular Canal in Panoramic Radiographs of Brazilian Subjects: Association Between Anatomic Characteristic and Clinical Procedures International Journal of Morphology
Amorim,Maise Mendonça; Borini,Cynthia Bicalho; Lopes,Sérgio Lúcio Pereira de Castro; Haiter-Neto,Francisco; Caria,Paulo Henrique Ferreira.
Morphological and topographic knowledge of the mandibular canal is of paramount importance during dental procedures in the jaw, as structures that go through this canal must be preserved. The aim of this study was to make a morphologic and morphometrical analysis of the course and relations of the mandibular canal of adult men and women, in two different age groups. The sample was composed of 300 panoramic radiographs divided into 4 groups: Groups F1 and F2: women (ranging between 18-40 years, and over 40 years of age, respectively); Groups M1 and M2:men (ranging between 18-40 years and over 40 years of age, respectively). Seven linear vertical measurements were performed in the radiographs to describe the course of the mandibular canal, and its and...
Tipo: Journal article Palavras-chave: Mandibular canal; Mental foramen; Mandibular foramen; Morphometry.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400044
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Stress Distribution in Human Zygomatic Pillar Using Three-Dimensional Finite Element Analysis International Journal of Morphology
Prado,Felippe Bevilacqua; Noritomi,Pedro Yoshito; Freire,Alexandre Rodrigues; Rossi,Ana Cláudia; Neto,Francisco Haiter; Caria,Paulo Henrique Ferreira.
This paper aimed to analyze stress distribution in human zygomatic pillar during masseter muscle contraction using three-dimensional finite element analysis. A three-dimensional model and hemi facial skull were produced based on CT-scan data. An adult male skull with structural anatomy integrity was used as model. Muscles forces were applied at origin of elevator muscles and supports was applied at the occlusal surfaces at first and second molars to simulate a masticatory load and stimulate the zygomatic pillar. Supports were applied to the occlusal contacts. Symmetry conditions were placed at the mid-sagittal plane. For the top and back cutting plane, constraints were used. Equivalent Von-Mises Stress and Maximum Principal Stress analysis were performed...
Tipo: Journal article Palavras-chave: Biomechanics; Skull; Finite element analysis.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400038
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Estudio Morfométrico del Seno Maxilar Mediante Tomografías Computadorizadas: Evaluación de la Reconstrucción Total de Piso Sinusal International Journal of Morphology
de Moraes,Paulo Hemerson; Costa,Marcelo Victor Omena Caldas; Olate,Sergio; Caria,Paulo Henrique Ferreira; Barbosa,José Ricardo de Albergaria.
La rehabilitación con implantes dentales en maxila posterior es compleja debido a la presencia del seno maxilar con sus diferentes variaciones anatómicas; el objetivo de este trabajo fue determinar el volumen óseo intrasinusal necesario para realizar la instalación de uno o mas implantes dentarios sin invadir la membrana sinusal. En 22 cráneos fueron evaluados 40 senos maxilares mediante tomografías computadorizadas (TC) realizando mediciones en los cortes axiales, coronales y sagitales. Se clasificaron los senos maxilares según el remanente de hueso alveolar y se instalo un implante de forma virtual en el lugar del primer molar superior, mediante el software implant view. Con estas medidas volumétricas finales se estableció las indicaciones...
Tipo: Journal article Palavras-chave: Seno maxilar; Elevación de seno maxilar; Reconstrucción ósea.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000200039
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Comparación Antropométrica entre Mandíbulas de las Poblaciones Uruguaya y Brasileña International Journal of Morphology
Sassi,Carlos; Picapedra,Alicia; Caria,Paulo Henrique Ferreira; Groppo,Francisco; Francesquini Júnior,Luiz; Daruge Júnior,Eduardo; Prado,Felippe Bevilacqua.
Las mandíbulas humanas pertenecientes a la población uruguaya presentan ciertas diferencias anatómicas con las de la brasileña. Tal hecho parecería deberse a las particularidades raciales y étnicas de cada país. Este estudio examinó las características morfológicas de 100 mandíbulas de uruguayos y las cotejó con las correspondientes a idéntico número de piezas óseas de brasileños, por medio de trece mediciones estipuladas por Humphrey et al. (1999). Las variaciones significativas entre los valores promedios fueron determinadas mediante el test de Mann-Whitney (alfa=5%). Se constataron expresivas discrepancias entre algunas de las dimensiones analizadas, producto de las modificaciones de forma y estructura de las mandíbulas de ambos grupos. Las uruguayas...
Tipo: Journal article Palavras-chave: Mandíbula; Morfología; Antropometría; Brasil; Uruguay.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000200003
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Comparaciones Morfológicas Entre las Mandíbulas de Brasileños y de Poblaciones de Otros Continentes International Journal of Morphology
Prado,Felippe Bevilacqua; Caria,Paulo Henrique Ferreira.
Las mandíbulas encontradas en diferentes regiones del mundo presentan considerables diferencias morfológicas, provocando dudas sobre las alteraciones y las características morfológicas de las mandíbulas humanas. La pluralidad racial y la consecuente mezcla de la población brasileña deben promover cambios morfológicos. Esta investigación analizó y comparó las características morfológicas de 100 mandíbulas humanas brasileñas con las dimensiones de las mandíbulas de individuos australianos, asiáticos, europeos y africanos, usando 13 dimensiones mandibulares definidas por Humphrey et al. (1999). Las diferencias significativas entre los valores medios fueran calculados través del test t student (p<0,05 e 0,01). Hubo diferencias significativas en las...
Tipo: Journal article Palavras-chave: Mandíbula; Morfología; Morfometría; Brasil.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000200013
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Incidence of Retromolar Foramen in Human Mandibles: Ethnic and Clinical Aspects International Journal of Morphology
Rossi,Ana Cláudia; Freire,Alexandre Rodrigues; Prado,Guilherme Bevilacqua; Prado,Felippe Bevilacqua; Botacin,Paulo Roberto; Caria,Paulo Henrique Ferreira.
The retromolar foramen allows the passage of the neurovascular bundles that contribute to nutrition and innervation of the pulp and periodontium of the lower teeth. Knowledge of this anatomical variation may prevent complications in the anesthesia and surgical procedures in this area and serve as an anatomical landmark for ethnic identification. The aim of this study was to evaluate the impact of the retromolar foramen in human mandibles of adult Brazilians and discuss the clinical and ethnic related to the presence of this foramen. Were evaluated 222 human mandibles, dry, adults, Brazilians, independent of gender. The evaluation was performed by two examiners who standardized search from a previous anatomical study. The mandibles were analyzed: the...
Tipo: Journal article Palavras-chave: Foramen; Retromolar; Anesthesia; Mandible.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300051
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Emissary Foramens of the Human Skull: Anatomical Characteristics and its Relations with Clinical Neurosurgery International Journal of Morphology
Freire,Alexandre Rodrigues; Rossi,Ana Cláudia; de Oliveira,Viviane Cristina Souza; Prado,Felippe Bevilacqua; Caria,Paulo Henrique Ferreira; Botacin,Paulo Roberto.
The recognition of emissary foramens is important not only for understanding the regional neurovascular anatomy, but also to distinguish normal from potentially abnormal structures. Thus, the aim of this study was to review the literature on anatomical and clinical aspects of the mastoid, parietal and sphenoid emissary foramens. It was found that the emissary foramen presents importance in clinical practice because it acts as a route of spread of extracranial infection to the intracranial structures and also possible complications in neurosurgery, due to its influence in the performance of techniques such as radiofrequency rhizotomy for treatment of trigeminal neuralgia. The anatomical knowledge of the emissary foramens is important due to variability in...
Tipo: Journal article Palavras-chave: Emissary foramens; Veins; Neurosurgery; Dura mater.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000100045
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Estudio Morfométrico de la Región Orbitaria para la Instalación de Implantes Craneofaciales International Journal of Morphology
Olate,Sergio; de Moraes,Paulo Hemerson; Caria,Paulo Henrique Ferreira; Vásquez,Bélgica; Barbosa,José Ricardo de Albergaria.
El objetivo de esta investigación es establecer las relaciones morfométricas presentes en las regiones periorbitarias utilizadas para la instalación de implantes craneofaciales. Se diseñó un estudio descriptivo utilizando 40 cráneos humanos de entre 20 y 60 años del Laboratorio de Anatomía del Departamento de Morfología de la Facultad de Odontología de Piracicaba de la Universidad Estadual de Campinas. Fueron realizadas tomografías volumétricas cone beam y a partir de la reconstrucción virtual se precisaron los puntos de análisis, basados en la literatura científica, tanto clínica como anatómica de la región. Se realizaron divisiones de la órbita respetando distancias mínimas y reparos anatómicos como el seno frontal y seno maxilar. En las mediciones...
Tipo: Journal article Palavras-chave: Implante craneofacial; Morfometría órbita; Rehabilitación facial.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100003
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Relations Between the Mandibular Canal and I, II and III Angle Classes in Panoramic Radiographs International Journal of Morphology
Falkine,Raisa Zago; Rossi,Ana Cláudia; Freire,Alexandre Rodrigues; Figueroba,Sidney Raimundo; Groppo,Francisco Carlos; Caria,Paulo Henrique Ferreira; Prado,Felippe Bevilacqua.
To prevent injury to the inferior alveolar nerve during dental procedures, knowledge of its anatomical location and course of the mandibular canal is imperative. The aim of this study was evaluate the location on panoramic radiographs of the mandibular canal in relation to the apices of the permanent mandibular molars and base mandible, and relate the type of mandibular canal with Angle classes I, II and III. We evaluated 748 panoramic radiographs distributed according to sex and occlusal class (Angle I, II and III) of fully dentate individuals, 18­51 age group. The radiographs were divided according to Angle classes based on cephalometric tracing, clinical data from the medical records of each individual and the analysis of of the maxillar and mandibular...
Tipo: Journal article Palavras-chave: Mandibular canal; Mandible; Panoramic radiograph; Malocclusion; Molars.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200012
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Biomechanics of the Human Canine Pillar Based on its Geometry Using Finite Element Analysis International Journal of Morphology
Freire,Alexandre Rodrigues; Prado,Felippe Bevilacqua; Rossi,Ana Cláudia; Noritomi,Pedro Yoshito; Neto,Francisco Haiter; Caria,Paulo Henrique Ferreira.
This study evaluated the stress distribution based on the canine pillar geometry in human skull, using a finite element analysis. Computed tomography of human skull was used to build a finite element model, which was composed by all bony structures of canine pillar: canine eminence, canine fossa, frontal process of maxilla, glabellum and superciliary arch. A support on the bite contact of maxillary canine tooth and a resultant force of the masticatory muscles was applied in the simulation. Equivalent Von-mises and maximum principal stresses were analyzed along the structures that compose the canine pillar geometry. Von-mises stress presented high stress concentrated at the canine fossa and frontal process of maxilla. Maximum principal stress showed...
Tipo: Journal article Palavras-chave: Skull; Biomechanics; Finite element analysis.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100036
Registros recuperados: 11
Primeira ... 1 ... Última
 

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