Material e técnica para análise fotoelástica plana da distribuição de tensões produzidas por implantes odontológicos

Abstract

The photoelasticity tecnique has been properly used by the engeneering sharing strength studies. However, its increasingly usage in dentistry, especially in the last decade with the osseointegrated implants, can be explained because of its easiness in tests and understanding results, moreover its low price and importance of the results that explains the function of those components. Considering the brazilian diffículties in accomplish cientifíc researches, limited by financial resources, it is necessary the quest of a national raw material for tests development. The aim of this research is the development of a photoelastic material, using an epoxi resin (bisfenol A + epoliglicol) accelerated by a benzenometanol + isoforonadiamina, comercially named Adesivo B Flexível A and B respectivelly, manufactured by Polipox Indústria e Comércio LTDA. A model containing a Branemark externai hex implant was embedded with that mentioned resin and the ensemble loaded with 0,5; 1,0; 1,5 and 2,0 Kgf. For better comprehention of the results, the fringes observed through a polariscope were pictured and qualitatively analysed, describing precisely the order number and its value for each levei of stress gradually applied. It was accessed that the resin permit great view because of its photoelastic proprieties, doesn’t has residual tension and therefore can be stressed for the visualization of a big amount of fringes. That’s because it constitutes a potential raw material for dental usage in scientific researches.