Análise do processo de fraturamento em componentes de cimento Portland para aplicação em tratamentos odontológicos

Abstract

Because of recent studies with order to use the cement as a material for application in endodontic treatment, in addition to it being one of the most used building materials in civil construction, for this wide range of applications, which are necessary degradation studies. For this study, using Portland cement, the specimens were prepared with the following measures 45 mm x 6.4 mm x 6.4 mm, and they have notches with lengths of 1 mm, 2 mm or 3 mm. Subsequently, it was applied an assay of flexion in three point for studying the fracture toughness, to verify the applied load (F) as a function of deflectionto determine the point at which occurs the exact moment when initiating damage spreading from the tip of the discontinuity created artificially in the material (notch). Thus, it was found the critical stress intensity factor (K1c), its value being 0,044 Mpa.m0,5. Subsequently, we performed a computer simulation model based on Finite Element Method.