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Advances in Materials Science and Engineering
Volume 2017, Article ID 3709171, 6 pages
https://doi.org/10.1155/2017/3709171
Research Article

A Novel Silica-Nylon Mesh Reinforcement for Dental Prostheses

1Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos, SP, Brazil
2Postgraduation Program in Prosthodontics, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos, SP, Brazil
3Postgraduation Program in Dentistry, Dental School, University of Passo Fundo, Passo Fundo, RS, Brazil
4Postdoctoral Program, Institute of Aeronautics Technology (ITA), São José dos Campos, SP, Brazil

Correspondence should be addressed to Tarcisio José de Arruda Paes-Junior; rb.psenu.cjsof@oisicrat

Received 9 June 2017; Revised 25 August 2017; Accepted 12 September 2017; Published 16 October 2017

Academic Editor: Jun Liu

Copyright © 2017 Tarcisio José de Arruda Paes-Junior et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Statement of the Problem. Acrylic resin-based dentures can fracture; thus they can benefit from reinforcement. Purpose. To evaluate the effect of a novel reinforcement structure made of nylon fibers and silica particles on the flexural strength of acrylic resin after relining and aging. Materials and Methods. Bar-shaped specimens were fabricated and divided into the following experimental groups (): control (acrylic resin without reinforcement); acrylic resin nylon fiber-reinforced; acrylic nylon and silica fiber-reinforced; acrylic nylon fiber-reinforced-relined; acrylic nylon and silica fiber-reinforced-relined. Half of the specimens from each group were aged by thermomechanical cycling (10000 cycles between 5°C and 55°C) before flexural strength testing to failure using a universal testing machine. Data (MPa) were statistically analyzed using analysis of variance and Tukey tests (). Results. Adding nylon fibers or silica-containing nylon fibers significantly increased the flexural strength of all the groups tested. Within the similar groups processed in the same manner, the relining procedure reduced the flexural strength of the specimens, whereas aging process had no effect on the strength values. Conclusion. Incorporating a silica-containing nylon fiber mesh into acrylic resin yielded the greatest flexural strength for the evaluated structures.