1000 resultados para Estratificação cruzada hummocky
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Blood transfusion is a very important therapeutic and profilatic procedure. However, the most part of the transfusions in animals in Brazil are done with total blood. The transfusion therapy made in an appropriate way, with hemotherapic products, can save lives and warranties a better health to patients. In all transfusion procedures, the cross match test must be done because there are lots of different blood group types, based on erythrocytes antigen. A slow infusion rate and intensive patient monitoration help to prevent transfusion reactions, mainly hemolytic reactions
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Medicina Veterinária - FCAV
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Pós-graduação em Cirurgia Veterinária - FCAV
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Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV
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Pós-graduação em Microbiologia Agropecuária - FCAV
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Genética e Melhoramento Animal - FCAV
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Pós-graduação em Engenharia Mecânica - FEIS
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Pós-graduação em Ciência Odontólogica - FOA
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The maxillary atresia is a alteration in the transverse dimension that can result in a unilateral or bilateral crossbite. For correction of atresia of the upper dental arch appliances with the intent to expand the arch of orthopedic or orthodontic manner are used, obtaining across-compatibility between the dental arches. The purpose of this study was to evaluate the dimensional changes of the maxillary in patients in the mixed dentition with atresia in the upper dental arch, using occlusal radiographs taken before, after rapid maxillary expansion and after removal of the appliance. Methods: the sample consisted of 35 patients who used the appliance type conventional Haas, in the mixed dentition, according to the standard protocol for installation, activation, containment and removal of the appliances rapid maxillary expansion. Results: the results confirm that the suture opening occurs in greater quantities in the anterior (4.3 mm) than posterior to (3.74 mm), representing a triangular opening of 7 degrees on average with the posterior opening 87% of the quantity of anterior opening. The molars region expanded about 5 mm, and the base bone 3.7 mm, representing a 74% bone expansion of the expansion teeth.
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This study evaluated the maxillary transversal changes caused by the rapid maxillary expansion (RME) accomplished by Hyrax appliance. Sixteen children from both genders were selected and treated, with ages between 7.7 to 10.8 years, who presented unilateral or bilateral posterior crossbite. Postero-anterior radiographs were taken at the beginning of the treatment, end and post-retention period. The treatment promoted an average opening of 8.8 mm of IMD (intermolar distance), 2.33 mm of IAD (interapex distance) and none of IID (interincisal distance). At the end of retention period, relapse was observed, with a decrease of 4.3 mm of IMD, 1.23 mm of IAD, a non-significant enlargement of IID (0,38 mm).These results confirm the significant influence of Hyrax appliance on transverse dimensions, represented by enlargement of IMD and IAD and its effectiveness to solve posterior crossbites.
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The aim of an orthodontic treatment is the achievement of a balanced, esthetic and, most of all, stable, intra and inter arches relationship. A common problem observed in occlusion is posterior crossbite and atresic maxilla. This problem may be treated by slow expansion, rapid expansion or surgically assisted expansion. For the present study cast models of 14 children between 7 and 11 years old were evaluated. There were 7 male and 7 female subjects that presented posterior crossbite and needed rapid maxillary expansion. The Hyrax appliance performed the therapy for correction of this transversal alteration, which is a common possibility in the treatment of this malocclusion. It was observed that the distance between the upper first molars and upper cuspids increased significantly; the length of the upper arch decreased and its perimeter increased significantly. At the lower arch there were no dimensional changes.
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The use of bone grafts from bone tissue banks, also known as bone allografts, has increased in the last years, although most of its users still have concerns on resources and processing protocols. The objective of this paper was to make a literature review about the use of bone allografts in Dentistry, and also about the legal considerations regarding this biomaterial. Studies regarding the donor selection, the cross-infection risks and processing protocols of this biomaterial are still rare but essential, and allied to those regarding its clinical application, can base its use.
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A agenesia de dentes do grupamento anterossuperior é de fácil percepção pelo leigo por afetar a estética do sorriso, sendo esse o motivo principal da busca por tratamento nesses casos. Atualmente, as diferentes opções de tratamento ampliam as possibilidades clínicas mas também trazem dúvidas e discussões sobre qual abordagem seria a ideal. O objetivo desse estudo foi avaliar, por meio da execução de um caso clínico, os parâmetros de importância no planejamento da transformação de caninos em incisivos laterais pelo uso da técnica restauradora direta com resinas compostas. Com o avanço das propriedades mecânicas, das cores e técnicas de estratificação dos materiais compósitos atuais, resultados altamente estéticos e mais duráveis podem ser conquistados. Em casos de agenesia de incisivos laterais e reposicionamento de caninos, a reanatomização com resinas compostas em incisivos laterais é um procedimento viável e com previsibilidade de resultados quando um método multidisciplinar e racional de trabalho é utilizado pela equipe odontológica.