Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/63718
Type: Artigo de periódico
Title: Effect of Accelerated Aging on Permanent Deformation and Tensile Bond Strength of Autopolymerizing Soft Denture Liners
Author: Takahashi, JMFK
Consani, RLX
Henriques, GEP
Nobilo, MAD
Mesquita, MF
Abstract: Purpose: The aim of this study was to evaluate the effect of different accelerated aging times on permanent deformation and tensile bond strength of two soft chairside liners, acrylic resin (T) and silicone (MS) based. Materials and Methods: Different specimens were made for each test of each reliner. The specimens (n = 10) were submitted to accelerated aging for 2, 4, 8, 16, 32, and 64 cycles. Tensile bond strength testing was performed at a crosshead speed of 5 mm/min and permanent deformation with a compressive load of 750 gf. Data were submitted to Mann-Whitney test to compare the materials at different times, and Kruskal-Wallis and Dunn tests were used for comparing aging intervals within a given reliner. Results: MS presented a lower percentage of permanent deformation (p < 0.0001) and higher tensile bond strength (p < 0.0001) than T in all time intervals and was not affected by the accelerated aging process, which reduced the permanent deformation and increased tensile bond strength of T (p < 0.05). Conclusion: MS presented lower permanent deformation and higher tensile bond strength than T. Although T presented changes in those properties after accelerated aging, both materials might be suited for long-term use.
Subject: Resiliency
softness
resistance
reliner
acrylic resin
prosthesis
accelerated aging
Country: EUA
Editor: Wiley-blackwell
Rights: fechado
Identifier DOI: 10.1111/j.1532-849X.2010.00679.x
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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