Analysis of Deformation in Ni-Cr Structures with New and Recast Alloys

Humberto Gennari Filho, Marcelo Coelho Goiato, José Vitor Quinelli Mazaro, Karina Helga Leal Túrcio

State Paulista University, São Paulo, Brazil.

DOI: 10.4236/msa.2015.67072                

Abstract

The present study analyzed new and recast Ni-Cr alloys, regarding the relationship between the applied force and the deformation in cantilevered bar segments, with dimensions of 4.0 mm, 3.5 mm, 3.0 mm in thickness, 4.5 mm width and 15 mm length, on a universal testing machine “EMIC”. The bars in the tests were initially obtained acrylic resin by 4.8 mm wide × 4.3 mm thick × 4 cm long. We obtained 30 bars divided into two groups, with 15 to test new alloys and 15 with alloys recast. The alloy used was Tilite. For the application of the load, the bars were attached to “EMIC” where the active tip of 200 kgf load cell was at a specific point of the bar (15 mm) with a speed of 0.5 mm per minute. The data showed statistically significant differences in relation to alloys and thickness among the bars, and all thicknesses evaluated were different. Thus, it was concluded that there was statistically significant difference between the groups and their variables, and that the alloys recast could be reused at least 1 time, without loss of properties.

Keywords

Alloys, Oral Protheses, Dental Materials

Conflicts of Interest

The authors declare no conflicts of interest.

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