Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório do Centro Universitário Braz Cubas |
Texto Completo: | https://repositorio.cruzeirodosul.edu.br/handle/123456789/2064 |
Resumo: | Dental rehabilitation in an atrophic maxilla is a major challenge for dentistry. In order to facilitate the rehabilitation of the atrophic maxilla, an implant called transmaxillary was developed. The objective of the current study was to evaluate the stress distribution around the transmaxillary implant submitted to axial and oblique loads by photoelasticity. Fourteen specimens with transmaxillary implant assemblies and respective prosthetic components were made of rigid photoelastic resin. Three types of prosthetic situations were tested: pure metal bar (1), metal bar with acrylic resin and teeth (fixed metalloplastic) (2), and pure metal bar with occlusal projections (3) to prevent sliding at the oblique load . Prosthetic types 1 and 2 were submitted to axial loads and type 3 to oblique loads (20 °), all at 100, 200, 400 and 500 N. All prosthetic types were loaded centrally and in cantilever. Compressive loading (10 mm / min) was applied in a universal testing machine, coupled to a polariscope with a photographic camera. The tests were repeated 5 times at the same point, totaling 140 tests per prosthetic type, 420 in total, and 1680 images were collected. In each image, the magenta color of the fringes was selected and measured (pixels2 ), according to a previously validated protocol. In the same load situations (axial or oblique) and prosthetic types the data were submitted to the Shapiro Wilk test, followed by Fisher's or Kruskal-Wallis's LSD test (p <0.05). In the majority of situations, significant differences were observed in the area of stress distribution only between 100 and 400 N loads, with the central axial load and the prosthetic type 2 being between 100 and 500 N. The centralized oblique loading situation showed no significant difference in stress distribution among any of the loads. Thus, it can be concluded that the stress distribution around the transmaxillary implant favored its biomechanical behavior, since, even with a direct relation between load and area of distribution in some situations, the tension distribution area remained stable with increasing load in most situations. |
id |
CUB_a960b7317386a9c7eb8ec303ad38ad06 |
---|---|
oai_identifier_str |
oai:repositorio.cruzeirodosul.edu.br:123456789/2064 |
network_acronym_str |
CUB |
network_name_str |
Repositório do Centro Universitário Braz Cubas |
repository_id_str |
|
spelling |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticosImplante dentárioForça compressivaProcessamento de imagem assistida por computadorCNPQ::CIENCIAS DA SAUDE::ODONTOLOGIADental rehabilitation in an atrophic maxilla is a major challenge for dentistry. In order to facilitate the rehabilitation of the atrophic maxilla, an implant called transmaxillary was developed. The objective of the current study was to evaluate the stress distribution around the transmaxillary implant submitted to axial and oblique loads by photoelasticity. Fourteen specimens with transmaxillary implant assemblies and respective prosthetic components were made of rigid photoelastic resin. Three types of prosthetic situations were tested: pure metal bar (1), metal bar with acrylic resin and teeth (fixed metalloplastic) (2), and pure metal bar with occlusal projections (3) to prevent sliding at the oblique load . Prosthetic types 1 and 2 were submitted to axial loads and type 3 to oblique loads (20 °), all at 100, 200, 400 and 500 N. All prosthetic types were loaded centrally and in cantilever. Compressive loading (10 mm / min) was applied in a universal testing machine, coupled to a polariscope with a photographic camera. The tests were repeated 5 times at the same point, totaling 140 tests per prosthetic type, 420 in total, and 1680 images were collected. In each image, the magenta color of the fringes was selected and measured (pixels2 ), according to a previously validated protocol. In the same load situations (axial or oblique) and prosthetic types the data were submitted to the Shapiro Wilk test, followed by Fisher's or Kruskal-Wallis's LSD test (p <0.05). In the majority of situations, significant differences were observed in the area of stress distribution only between 100 and 400 N loads, with the central axial load and the prosthetic type 2 being between 100 and 500 N. The centralized oblique loading situation showed no significant difference in stress distribution among any of the loads. Thus, it can be concluded that the stress distribution around the transmaxillary implant favored its biomechanical behavior, since, even with a direct relation between load and area of distribution in some situations, the tension distribution area remained stable with increasing load in most situations.A reabilitação dentária em uma maxila atrófica é um grande desafio para a odontologia. No intuito de facilitar a reabilitação da maxila atrófica um implante chamado de transmaxilar foi desenvolvido. O objetivo do trabalho atual foi avaliar por fotoelasticidade a distribuição de tensões ao redor do implante transmaxilar submetido a cargas axiais e oblíquas. Foram confeccionados 14 corpos de prova com conjuntos implantes transmaxilares e respectivos componentes protéticos em resina fotoelástica rígida. Três tipos de situações protéticas foram testadas: barra metálica pura (1), barra metálica adicionada de resina acrílica e dentes (fixa metaloplástica) (2), e barra metálica pura com projeções no sentido oclusal (3) para impedir o deslizamento à carga oblíqua. Os tipos protéticos 1 e 2 foram submetidos a cargas axiais e o tipo 3 a cargas oblíquas (20°), todos a 100, 200, 400 e 500 N. Todos os tipos protéticos foram carregados centralmente e em cantiléver. O carregamento compressivo (10 mm/min.) foi aplicado em uma máquina universal de ensaios, acoplada a um polariscópio com uma câmera fotográfica. Os testes foram repetidos 5 vezes no mesmo ponto, totalizando 140 testes por tipo protético, 420 no total, e 1680 imagens coletadas. Em cada imagem, a cor magenta das franjas foi selecionada e medida (pixels2 ), de acordo com protocolo validado previamente. Dentro das mesmas situações de carga (axial ou oblíqua) e tipos protéticos os dados foram submetidos ao teste de Shapiro Wilk, seguidos do teste LSD de Fisher ou Kruskal-Wallis (p<0,05). Na maior parte das situações observaram-se diferenças significantes de aumento na área de distribuição de tensões somente entre as cargas de 100 e 400 N, sendo que na carga axial centralizada e tipo protético 2 a diferença ficou entre as cargas 100 e 500 N. A situação de carga oblíqua centralizada não demonstrou diferença significante de distribuição de tensão entre nenhuma das cargas. Assim, pode-se concluir que a distribuição de tensões ao redor do implante transmaxilar favoreceu seu comportamento biomecânico, uma vez que, mesmo com uma relação direta entre carga e área de distribuição em algumas situações, prevaleceu a estabilidade da área de distribuição de tensões com o aumento da carga na maior parte das situações.Universidade PositivoBrasilPrograma de Pós-GraduaçãoPrograma de Pós-Graduação em Odontologia ClínicaUPZielak, João Césarhttp://lattes.cnpq.br/5991949730989569Balluta, Alexandra2021-05-05T22:14:58Z20172021-05-05T22:14:58Z2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttps://repositorio.cruzeirodosul.edu.br/handle/123456789/2064porinfo:eu-repo/semantics/openAccessreponame:Repositório do Centro Universitário Braz Cubasinstname:Centro Universitário Braz Cubas (CUB)instacron:CUB2021-06-14T13:27:44Zoai:repositorio.cruzeirodosul.edu.br:123456789/2064Repositório InstitucionalPUBhttps://repositorio.brazcubas.edu.br/oai/requestbibli@brazcubas.edu.bropendoar:2021-06-14T13:27:44Repositório do Centro Universitário Braz Cubas - Centro Universitário Braz Cubas (CUB)false |
dc.title.none.fl_str_mv |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
title |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
spellingShingle |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos Balluta, Alexandra Implante dentário Força compressiva Processamento de imagem assistida por computador CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
title_short |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
title_full |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
title_fullStr |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
title_full_unstemmed |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
title_sort |
Avaliação fotoelástica do implante transmaxilar com múltiplos munhões protéticos |
author |
Balluta, Alexandra |
author_facet |
Balluta, Alexandra |
author_role |
author |
dc.contributor.none.fl_str_mv |
Zielak, João César http://lattes.cnpq.br/5991949730989569 |
dc.contributor.author.fl_str_mv |
Balluta, Alexandra |
dc.subject.por.fl_str_mv |
Implante dentário Força compressiva Processamento de imagem assistida por computador CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
topic |
Implante dentário Força compressiva Processamento de imagem assistida por computador CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
description |
Dental rehabilitation in an atrophic maxilla is a major challenge for dentistry. In order to facilitate the rehabilitation of the atrophic maxilla, an implant called transmaxillary was developed. The objective of the current study was to evaluate the stress distribution around the transmaxillary implant submitted to axial and oblique loads by photoelasticity. Fourteen specimens with transmaxillary implant assemblies and respective prosthetic components were made of rigid photoelastic resin. Three types of prosthetic situations were tested: pure metal bar (1), metal bar with acrylic resin and teeth (fixed metalloplastic) (2), and pure metal bar with occlusal projections (3) to prevent sliding at the oblique load . Prosthetic types 1 and 2 were submitted to axial loads and type 3 to oblique loads (20 °), all at 100, 200, 400 and 500 N. All prosthetic types were loaded centrally and in cantilever. Compressive loading (10 mm / min) was applied in a universal testing machine, coupled to a polariscope with a photographic camera. The tests were repeated 5 times at the same point, totaling 140 tests per prosthetic type, 420 in total, and 1680 images were collected. In each image, the magenta color of the fringes was selected and measured (pixels2 ), according to a previously validated protocol. In the same load situations (axial or oblique) and prosthetic types the data were submitted to the Shapiro Wilk test, followed by Fisher's or Kruskal-Wallis's LSD test (p <0.05). In the majority of situations, significant differences were observed in the area of stress distribution only between 100 and 400 N loads, with the central axial load and the prosthetic type 2 being between 100 and 500 N. The centralized oblique loading situation showed no significant difference in stress distribution among any of the loads. Thus, it can be concluded that the stress distribution around the transmaxillary implant favored its biomechanical behavior, since, even with a direct relation between load and area of distribution in some situations, the tension distribution area remained stable with increasing load in most situations. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 2017 2021-05-05T22:14:58Z 2021-05-05T22:14:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.cruzeirodosul.edu.br/handle/123456789/2064 |
url |
https://repositorio.cruzeirodosul.edu.br/handle/123456789/2064 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Positivo Brasil Programa de Pós-Graduação Programa de Pós-Graduação em Odontologia Clínica UP |
publisher.none.fl_str_mv |
Universidade Positivo Brasil Programa de Pós-Graduação Programa de Pós-Graduação em Odontologia Clínica UP |
dc.source.none.fl_str_mv |
reponame:Repositório do Centro Universitário Braz Cubas instname:Centro Universitário Braz Cubas (CUB) instacron:CUB |
instname_str |
Centro Universitário Braz Cubas (CUB) |
instacron_str |
CUB |
institution |
CUB |
reponame_str |
Repositório do Centro Universitário Braz Cubas |
collection |
Repositório do Centro Universitário Braz Cubas |
repository.name.fl_str_mv |
Repositório do Centro Universitário Braz Cubas - Centro Universitário Braz Cubas (CUB) |
repository.mail.fl_str_mv |
bibli@brazcubas.edu.br |
_version_ |
1798311356326215680 |