Extensometria: estudo das deformações ao redor de três implantes cone morse, com posicionamento linear, sob carga axial

O objetivo desse estudo foi avaliar a aplicacao de carga e distribuicao das Micro deformacoes ao redor de implantes com conexao protetica cone morse. Tres implantes foram inseridos num bloco de poliuretano e pilares microunit foram instalados nos implantes com torque de 20 Ncm. Tres coifas usinadas foram adaptadas nos pilares para configurar a supra estrutura protetica (n=5) e comparar com as supra-estruturas obtidas com coifas plasticas. Quatro extensometros foram colados na superficie superior do bloco. Uma carga vertical estatica de 30 Kg foi aplicada em cinco pontos das supra-estruturas. Os registros obtidos dos extensometros foram submetidos ao teste estatistico ANOVA e Tukey(_=5%). As medidas derivadas dessa simulacao revelaram que durante a aplicacao de carga: (1) existiu uma relacao direta do local de aplicacao e na distribuicao da micro deformacao ao redor dos implantes; (2) nao existiu diferenca na micro deformacao entre coifas plasticas e usinadas(AU) The aim of this study was to evaluate the load transfer and strain distribution by an implant-supported fixed partial prosthesis. Three implants Morse Taper were inserted in a polyurethane block and abutments microunit were installed on the implants with a torque of 20Ncm. Plastic cylinders and prefabricated cylinders were adapted on abutments to fabricate the framework (n=5). Four strain gauges were attached on the superior surface of the block and then each framework was tight on the abutments with a torque of 10 Ncm and vertical load of 30Kg was applied to five points on the framework. The data obtained inthe strain gauge analysis were submitted to the statistical tests ANOVA and Tukey (a=5%). The measurements derived from this simulation revealed that: (1) there was a direct proportion between the strain distribution in the metal framework and stresses created in the supporting structure around the implants; (2) there was not a strain difference between plastic and prefabricated cylinders during the load transfer.(AU)