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Tensões ósseas peri-implantares em implantes colocados justa e infra crestalmente: uma análise por elementos finitos
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| PPG_19705 | 2.62 MB | Adobe PDF |
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Advisor(s)
Abstract(s)
Este trabalho divide-se em duas partes distintas: uma longa e detalhada revisão
bibliográfica acerca das temáticas anatomia peri-implantar, espaço biológico, osso
alveolar, osteointegração, cone Morse e platform-switching e FEA (Finit Element
Analisys) ; e um estudo sobre tensões peri-implantares em implantes do tipo cone
Morse colocados infra e justa crestalmente.
Foi possível concluir com este estudo laboratorial que os implantes colocados justacrestalmente
apresentam melhores resultados biomecanicamente, ou seja, apresentam
um menor volume de osso em tensão.
Materiais e métodos:
Foi realizada uma pesquisa bibliográfica na PubMed e Medline explorando os seguintes
items: “osteointegração”, “saucerização”, “platform switching”, “cone Morse”, “osso
alveolar”, “anatomina peri-implantar”, “espaço biológico”, “osteoclastos”,
“osteoblastos”, “remodelação óssea”, “colocação de implantes justacrestalmente”,
“colocação de implantes infra-crestalmente” e “análise de FEA”.
Na bibliografia encontrada com as temáticas supra-citadas foi feita uma cuidadosa
selecção de acordo com aquilo a que este trabalho se propunha.
Simultaneamente, um modelo 3D de dois implantes, um de conexão externa hexagonal
e outro de conexão interna do tipo cone Morse, exactamente iguais com exceção da já
referida conexão, de 10mm de comprimento e 4mm de diâmetro, foram inseridos num
bloco ósseo obtido através de uma CT e sujeitos a uma força axial de 150N e uma força
oblíqua de 150N a 45º, tendo sido avaliados por uma análise de elementos finitos.
This work divides itself in two distinct parts: a long and detailed bibliographic revision about the following themes: peri-implant anatomy, biological width, alveolar bone, osseointegration, Morse taper and platform-switching and FEA (Finit Element Analysis); and a study about peri-implant tensions on Morse taper implants placed crestaly and infra-crestaly. With this study, it was possible to conclude that the implants placed equi-crestaly presente better biomechanical results, that is, a lower volume of boné in stress. Materials and methods: A bibliographic research was made on PubMed and Medline exploring the following itms: “osseointegration”, “saucerization”, “platform switching”, Morse taper”, “alveolar bone”, “peri-implantar anatomy”, “biological width”, “osteoclasts”, “osteoblasts”, “boné remodeling”, “crestal implants placement”, “infra-crestal implants placement” and “FEA analysis”. In the bibliography found with the themes above cited, it was made a careful selection according to the purpose of this work. Simultaneously, a 3D modelo f two implants, one of hexagonal external connection and one of internal connection from the Morse taper type, exactly the same with exception of the already refered connection, of 10mm length and 4mm diameter, were inserted in a bone block obtained from a CT and subjected to an axial force of 150N anda n obliqúe force of 50N at 45º, having been evaluated by a finit elemento analysis.
This work divides itself in two distinct parts: a long and detailed bibliographic revision about the following themes: peri-implant anatomy, biological width, alveolar bone, osseointegration, Morse taper and platform-switching and FEA (Finit Element Analysis); and a study about peri-implant tensions on Morse taper implants placed crestaly and infra-crestaly. With this study, it was possible to conclude that the implants placed equi-crestaly presente better biomechanical results, that is, a lower volume of boné in stress. Materials and methods: A bibliographic research was made on PubMed and Medline exploring the following itms: “osseointegration”, “saucerization”, “platform switching”, Morse taper”, “alveolar bone”, “peri-implantar anatomy”, “biological width”, “osteoclasts”, “osteoblasts”, “boné remodeling”, “crestal implants placement”, “infra-crestal implants placement” and “FEA analysis”. In the bibliography found with the themes above cited, it was made a careful selection according to the purpose of this work. Simultaneously, a 3D modelo f two implants, one of hexagonal external connection and one of internal connection from the Morse taper type, exactly the same with exception of the already refered connection, of 10mm length and 4mm diameter, were inserted in a bone block obtained from a CT and subjected to an axial force of 150N anda n obliqúe force of 50N at 45º, having been evaluated by a finit elemento analysis.
Description
Keywords
Osteointegração Saucerização Platform switching Cone Morse Osso alveolar Anatomina peri-implantar Espaço biológico Osteoclastos Osteoblastos Remodelação óssea Colocação de implantes justacrestalmente Colocação de implantes infra-crestalmente Análise de FEA Osseointegration Saucerization Platform switching Morse taper Alveolar bone Peri-implantar anatomy Biological width Osteoclasts Osteoblasts Boné remodeling Crestal implants placement Infra-crestal implants placement FEA analysis