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Search Results: 1 - 10 of 37762 matches for " Paulo Hemerson; Costa "
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Estudio Morfométrico del Seno Maxilar Mediante Tomografías Computadorizadas: Evaluación de la Reconstrucción Total de Piso Sinusal Morphometric Study of Maxillary Sinus by Computed Tomography: Assessment of Sinus Floor Bone Reconstruction
Paulo Hemerson de Moraes,Marcelo Victor Omena Caldas Costa,Sergio Olate,Paulo Henrique Ferreira Caria
International Journal of Morphology , 2012,
Abstract: 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 reconstructivas intra sinusales a partir de los sitios donantes intrabucales mas frecuentemente evaluados en la literatura mundial. El grupo I (1mm a 4mm de reborde alveolar remanente) presentaba déficit óseo de hasta 1,98cm3, el grupo II (4mm a 7mm) presentaba déficit de 1,06cm3; el grupo III (7mm a 10mm) presentaba un déficit de 0,67 cm3; a partir de estos resultados podemos concluir que los sitios intrabucales pueden ser utilizados en la mayoría de los grupo estudiados, incluyendo las reconstrucciones bilaterales. Rehabilitation with dental implants in posterior maxilla is difficult because of the presence of maxillary sinus with anatomical variations. The aim of this research was to evaluate the sinus volume to install one or more implants without invading the sinus membrane. Forty (40) maxillary sinuses were evaluated in 22 skulls by computed tomography measuring in the axial, coronal and sagittal slice. The sinus were classified according to the remaining alveolar bone and a dental implant in the place of the upper first molar was virtually installed by implant view software. With this final volumetric measurement the surgical indications were established for inlay reconstruction from intra oral donor sites frequently evaluated in world literature. Group I (1mm to 4mm of alveolar ridge) showed a bone deficit of 1.98 cm3, group II (4mm to 7mm) showed a deficit of 1.06 cm3; group III (7mm to 10mm) showed a 0.67 cm3 deficit. In view of these results we concluded that intra oral donor site can be used for the three study groups and in some cases in bilateral reconstruction.
Estudio Morfométrico del Seno Maxilar Mediante Tomografías Computadorizadas: Evaluación de la Reconstrucción Total de Piso Sinusal
de Moraes,Paulo Hemerson; Costa,Marcelo Victor Omena Caldas; Olate,Sergio; Caria,Paulo Henrique Ferreira; Barbosa,José Ricardo de Albergaria;
International Journal of Morphology , 2012, DOI: 10.4067/S0717-95022012000200039
Abstract: rehabilitation with dental implants in posterior maxilla is difficult because of the presence of maxillary sinus with anatomical variations. the aim of this research was to evaluate the sinus volume to install one or more implants without invading the sinus membrane. forty (40) maxillary sinuses were evaluated in 22 skulls by computed tomography measuring in the axial, coronal and sagittal slice. the sinus were classified according to the remaining alveolar bone and a dental implant in the place of the upper first molar was virtually installed by implant view software. with this final volumetric measurement the surgical indications were established for inlay reconstruction from intra oral donor sites frequently evaluated in world literature. group i (1mm to 4mm of alveolar ridge) showed a bone deficit of 1.98 cm3, group ii (4mm to 7mm) showed a deficit of 1.06 cm3; group iii (7mm to 10mm) showed a 0.67 cm3 deficit. in view of these results we concluded that intra oral donor site can be used for the three study groups and in some cases in bilateral reconstruction.
Diagnostic Value of Saliva in Oral and Systemic Diseases: A Literature Rewiew
Sérgio Adriane Bezerra de MOURA,Ana Míryam Costa de MEDEIROS,Fernando Rafael Hortêncio da COSTA,Paulo Hemerson de MORAES
Pesquisa Brasileira em Odontopediatria e Clínica Integrada , 2007,
Abstract: Introduction: The value of saliva as a diagnostic resource of oral and systemic diseases has been object of study of several researchers that intend to add a possible complementary examination. The analysis of saliva, as analyses based on the use of blood, has two goals: first, to identify individuals with disease, and second, to follow the evolution of the affected individual, evaluating the effectiveness of the treatment. Among the advantages of the use of this resource, it may be mentioned ease of material collection and handing, which are important points in the technical operationalization of this type of examination. Saliva can be useful in the evaluation of caries risk as well as in the diagnosis of other diseases by means of syalometric and syalochemical methods (flow salivary). These methods allow that substances are dosed and thus contribute to the diagnosis of diseases from the assessment of the levels of inorganic and organic elements, such as hormonal dosages, analysis of biological, viral, bacterial and fungal agents, in addition to bacterial markers that are useful in cancer diagnosis and prognosis. It is necessary to consider a hierarchical model used for diagnostic evaluation of the technology, which consists in five basic levels of analysis in which the efficacy of the entire diagnostic test should be evaluated: the analytical, which considers the accuracy and exactness; the diagnostic sensitivity and specificity; the efficacy of the result for the patient based on the medical decision making; the operational evaluation, which considers the predictive value and the test efficiency; and the cost/benefit.Purpose: To perform an ample literature review on the use of saliva as a diagnostic resource of diseases and monitoring of oral and systemic health.Conclusion: The advances in the studies of diagnostic methods that use saliva as a biological mean for diagnosis and surveillance of oral and systemic conditions present promising results, which could constitute an examination resource used in routine practice.
In vitro and in vivo antiproliferative activity of Calotropis procera stem extracts
Magalh?es, Hemerson I.F.;Ferreira, Paulo M.P.;Moura, Eraldo S.;Torres, Márcia R.;Alves, Ana P.N.N.;Pessoa, Otília D.L.;Costa-Lotufo, Letícia V.;Moraes, Manoel O.;Pessoa, Cláudia;
Anais da Academia Brasileira de Ciências , 2010, DOI: 10.1590/S0001-37652010000200017
Abstract: the cytotoxic potential of stem organic extracts from calotropis procera (asclepiadaceae) was firstly evaluated against cancer cell lines by mtt assay. subsequently, samples considered cytotoxic were tested for antimitotic activity on sea urchin egg development and for in vivo antiproliferative activity in mice bearing sarcoma 180 tumor. among the five extracts (hexane, dichloromethane, ethyl acetate, acetone and methanol), ethyl acetate and acetone extracts displayed higher cytotoxic potential against tumor cells, with ic50 ranging from 0.8 to 4.4 μg/ml, while methanolic extract was weakly cytotoxic. cytotoxic extracts also exhibited cell division inhibition capacity by antimitotic assay, revealing ic50 values lower than 5 μg/ml. in the in vivo antitumor assessments, ethyl acetate- and acetone-treated animals showed tumor growth inhibition ratios of 64.3 and 53.1%, respectively, with reversible toxic effects on liver and kidneys. further studies are in progress in order to identify c. procera cytotoxic compound(s) and to understand the mechanism of action responsible for this tumor-decreasing potential.
Anemia e transfus?es de concentrados de hemácias em pacientes graves nas UTI brasileiras (pelo FUNDO-AMIB)
Lobo, Suzana Margareth;Vieira, Silvia Rios;Knibel, Marcos Freitas;Grion, Cintia Magalh?es Carvalho;Friedman, Gilberto;Valiatti, Jorge Luis;Machado, Flávia Ribeiro;Chiavone, Paulo Antonio;Paciência, Luis Eduardo Miranda;Paula, Juarez de;Guimar?es, Sérgio Mussi;Costa, Jo?o Luiz Ferreira;Costa Filho, Rubens Carmo;Borges, Gleida Alves;Gama, Hemerson Casado;Grilo, Marcellus Gazola;Torres, Kerginaldo Paulo;Franco, Rubens Sérgio da Silva;Pinto, Jorge Eduardo Silva Soares;David, Cid Marcos;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000300004
Abstract: background and objectives: anemia of critical illness is a multifactorial condition caused by blood loss, frequent phlebotomies and inadequate production of red blood cells (rbc). controversy surrounds the most appropriate hemoglobin concentration "trigger" for transfusion of rbc. we aimed to evaluate transfusion practices in brazilian icus. methods: a prospective study throughout a 2-week period in 19 brazilian icus. hemoglobin (hb) level, transfusion rate, organ dysfunction assessment and 28-day mortality were evaluated. primary indication for transfusion and pretransfusion hemoglobin level were collected for each transfusion. results: two hundred thirty-one patients with an icu length of stay longer than 48h were included. an hb level lower than 10 g/dl was found in 33% on admission in the icu. a total of 348 rbc units were transfused in 86 patients (36.5%). the mean pretransfusion hemoglobin level was 7.7 ± 1.1 g/dl. transfused-patients had significantly higher sofa score (7.9 ± 4.6 vs 5.6 ± 3.8, p < 0.05, respectively), days on mechanical ventilation (10.7 ± 8.2 vs 7.2 ± 6.4, p < 0.05) and days on vasoactive drugs (6.7 ± 6.4 vs 4.2 ± 4.0, p < 0.05) than non-transfused patients despite similar apache ii scores (15.2 ± 8.1 vs 14.2 ± 8.1, ns). transfused patients had higher mortality rate (43.5%) than non-transfused patients (36.3%) (rr 0.60-1.15, ns). only one patient (0.28%) had febrile non-hemolytic transfusion and urticarial reactions. conclusions: anemia is common in critically ill patients.it seems from the present study that transfusion practices in brazil have had a more restrictive approach with a lower limit "transfusion trigger".
Craniofacial Morphometry for Craniofacial Implant Morfometría Craneofacial para Implante Craneofacial
Sergio Olate,Paulo Hemerson de Moraes,Paulo Henrique Ferreira Caria,Henrique Duque de Miranda Chaves Netto
International Journal of Morphology , 2012,
Abstract: 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 other investigations with a similar aim were also made. In the supraorbital area, values of 7.92±1.82 mm were found and in the lateral area values of 7.54±0.98 mm, allowing the placement of implants 5 or 6 mm in length. In the area of the zygomatic bone, dimensions of 10.4±2.35 mm were obtained, allowing the placement of implants 8 mm in length. In the periauricular area values were obtained of 2.93±0.55 mm in the superior region and 3.1±0.7 mm in the inferior region, whereas in the perinasal area implants 4 mm in length can be placed. We concluded that the craniomaxillofacial bone structure presents acceptable widths for the installation of implants; the periauricular region presents lower dimensions, with the possibility of intracranial communication in areas above the external auditory meatus. Los implantes craneofaciales están siendo cada vez más utilizado para tratar a pacientes con secuelas de resecciones oncológicas, traumatismos, y deficiencias congénitas, entre otras. El objetivo de esta investigación fue establecer las dimensiones óseas mínimas y máximas presentes en los lugares más utilizados para la inserción de implantes craneofaciales. Se dise o un estudio descriptivo que analizó 40 cráneos humanos utilizando cono Tomografía computarizada Cone-Beam; en la reconstrucción volumétrica fueron seleccionados los puntos más utilizados en las investigaciones clínicas para la inserción de implantes, que representan la orbital, hueso perinasal, hueso cigomático y regiones periauriculares. La medición de la distancia entre los huesos corticales en los planos sagital, axial y coronal, y las comparaciones entre el sexo y otras investigaciones con el mismo objetivo fueron realizadas. En el área supraorbital, se encontraron valores de 7,92 ± 1,82 mm y en las áreas laterales de 7,54 ± 0,98 mm, lo que perm
Estudio Morfométrico de la Región Orbitaria para la Instalación de Implantes Craneofaciales Morphometric Study of Orbital Region for Craneofacial Implant Applications
Sergio Olate,Paulo Hemerson de Moraes,Paulo Henrique Ferreira Caria,Bélgica Vásquez
International Journal of Morphology , 2011,
Abstract: El objetivo de esta investigación es establecer las relaciones morfométricas presentes en las regiones periorbitarias utilizadas para la instalación de implantes craneofaciales. Se dise ó un estudio descriptivo utilizando 40 cráneos humanos de entre 20 y 60 a os 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 realizadas, se observó que el área supraorbitaria presentaba una distancia ósea sagital de 8,14mm ± 1,91mm, el reborde infraorbitario de 7mm ± 1,71mm y el área lateral de órbita un promedio de 7,91mm ± 1,15mm. Considerando que los implantes de mayor dimensión son de 6mm, la instalación de implantes en estas regiones está totalmente asegurada en términos de requerimientos de cantidad ósea regional. The aim of this research was to study the morphometric relation present in periorbital region, used in the installation of craniofacial implants. A descriptive study was carried out using 40 skulls between 20 and 60 years of age from the Laboratório de Anatomia do Departamento de Morfologia da Facultade de Odontologia de Piracicaba da Universidade Estadual de Campinas. Volumetric tomography with cone beam technique was used along with virtual reconstruction, with the point of analysis being selected based on the clinical and anatomical scientific literature. Orbital division was realized with minimal distance from the frontal and maxillary sinus. During measurement it was observed that the superior orbital rim presented a sagittal bone distance of 8.14mm±1.91 mm; inferior orbital rim of 7mm±1.71 mm, and the lateral orbital presented an average of 7.91 mm±1.15 mm, considering that craniofacial implants present up to 6 mm in length, the installation of implants in this area is considered safe in terms of regional bone quantity requirements.
Compétence de communication et didactique Des langues étrangères : La liaison ratée !
Paulo Costa
Synergies Pologne , 2005,
Abstract:
A experiência dos clássicos adaptados: caminhos ínvios na promo o da leitura de textos literários?
Paulo Costa
álabe , 2011,
Abstract: A adapta o de obras consideradas como “clássicos da literatura portuguesa”, n o sendo uma prática nem recente nem inovadora tem, desde há algum tempo, conhecido novos contornos no mercado editorial nacional. Procuraremos, com a presente reflex o, colocar criticamenteem destaque alguns aspectos: a) algumas reflex es teóricas em torno do texto literário e do canone; b) leitura de textos literários e fun es que aquela pode desempenhar c) características e quest es denatureza geral levantadas pelas adapta es de textos literários n o direccionados inicialmente para uma recep o infantil e/ou juvenil (a quem se destinam efectivamente estes textos?).Tomando como objecto de análise alguns exemplos recentemente publicados, tentaremos questionar os aspectos anteriormentereferidos. Neste percuso, procuraremos ver em que medida se visa omelhor de dois mundos: o das crian as e jovens, o dos pais e educadores, o do nicho de mercado eventualmente ainda porexplorar. Talvez o ‘mapa’ nos guie até uma ‘Terra do Nunca’ na qual uma aparência de produto pedagógico ou similar sirva prioritariamentepropósitos comerciais.
Condylar Resorption After Orthognathic Surgery: A Systematic Review Reabsorción Condilar Después de Cirugía Ortognática: Una Revisión Sistemática
Paulo Hemerson de Moraes,Célia Marisa Rizzati-Barbosa,Sergio Olate,Roger Willian Fernandes Moreira
International Journal of Morphology , 2012,
Abstract: The aim of this research was to evaluate the risk factors related to condylar resorption (CR) after orthognathic surgery. Was realized a systematic review with a search of the literature performed in the electronic databases PubMed, MedLine, Ovid, Cochrane Library for current evidence in the world literature as conducted, and relevant articles were selected in according to inclusion and exclusion criteria and the findings were compared. Eight papers, (follow-up 12 months to 69 months) were including. A sample of 2567 patient with mandible or bi maxillary surgery with an age range from 14 to 46 year old was observed. In 137 patients (5.3%) CR was observed , with a 97.6% (122) female. CR was related to 118 cases with mandibular deficiencies with high mandibular plane (advancement surgery). CR were present principally in bi maxillary surgery with a 103 cases (75.2%) and only two papers show any analysis to the relation with TMJ dysfunction. Current evidence in CR is poor but supports those female patients with mandibular deficiency and high mandibular plane angle submitted to bi maxillary surgery with change in occlusal plane (counterclockwise) are associated with condylar resorption after orthognathic surgery. El objetivo de esta investigación fue evaluar los factores de riesgo asociados a reabsorción condilar (RC) posterior a cirugía ortognática. Fue realizada una revisión sistemática con una búsqueda de la literatura realizada en bases de dato electrónicos como PubMed, MedLine, Ovid, Cochrane Library buscando actual evidencia en la literatura mundial; artículos relevantes fueron seleccionados según los criterios de inclusión y exclusión, comparando sus resultados. Ocho artículos (tiempo de seguimiento de 12 a 69 meses) fueron incluidos. Se observó una muestra de 2567 pacientes con cirugía mandibular o bimaxilar con una edad de entre 14 y 46 a os. En 137 pacientes (5,3%) se observó reabsorción condilar, siendo el 97,6% (122 casos) de sexo femenino. La RC fue observada n 118 casos de deficiencia mandibular con un plano mandibular alto (cirugía de avance mandibular). La RC estuvo presente principalmente en cirugías bimaxilares con 103 casos afectados (75,2%) y solo dos artículos evidenciaron análisis previo de disfunción de ATM. Actualmente la evidencia en RC es limitada pero fundamenta que mujeres con deficiencia mandibular y alto plano mandibular sometidas a cirugía bimaxilar con alteración del plano oclusal (giro horario) son asociadas a la reabsorción condilar después de la cirugía ortognática.
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