Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of Accelerated Aging on Permanent Deformation and Tensile Bond Strength of Autopolymerizing Soft Denture Liners

Full text
Author(s):
Ferreira Koyama Takahashi, Jessica Mie [1] ; Xediek Consani, Rafael Leonardo [1] ; Pessanha Henriques, Guilherme Elias [1] ; de Arruda Nobilo, Mauro Antonio [1] ; Mesquita, Marcelo Ferraz [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY; v. 20, n. 3, p. 200-204, APR 2011.
Web of Science Citations: 8
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. (AU)