The aim of this study will be to evaluate the fracture load testing on interim partial fixed dental prostheses of three upper anterior teeth, made by acrylic resin or bisacrylic resin, which will containing a silica-nylon reinforcement and a surface treatment will be made in that mesh. The experimental groups will be established as follow (n = 10): acrylic resin without nylon mesh, acrylic resin with nylon mesh, acrylic resin with nylon mesh with surface treatment, bisacrylic resin without nylon mesh, bisacrylic resin with mesh nylon and nylon mesh with surface treatment, will be made of 60 specimens which will be submitted to fracture load testing that was performed in a universal testing machine. The load will be applied with a cylindrical tip rounded end to the center point of the interim prostheses until fracture of the restoration occurred or the maximum load will be reached. The data obstine will be compared statistically.
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