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- Title
Effect of long-term water immersion or thermal shock on mechanical properties of high-impact acrylic denture base resins.
- Authors
Hirono SASAKI; Ippei HAMANAKA; Yutaka TAKAHASHI; Tomohiro KAWAGUCHI
- Abstract
The purpose of this study was to investigate the effect of long-term water immersion or thermal shock on the mechanical properties of high-impact acrylic denture base resins. Two high-impact acrylic denture base resins were selected for the study. Specimens of each denture base material tested were fabricated according to the manufacturers' instructions (n=10). The flexural strength at the proportional limit, the elastic modulus and the impact strength of the specimens were evaluated. The flexural strength at the proportional limit of the high-impact acrylic denture base resins did not change after six months' water immersion or thermocycling 50,000 times. The elastic moduli of the high-impact acrylic denture base resins significantly increased after six months' water immersion or thermocycling 50,000 times. The impact strengths of the high-impact acrylic denture base resins significantly decreased after water immersion or thermocycling as described above.
- Subjects
MECHANICAL properties of condensed matter; ACRYLIC resins; WATER immersion; DENTURE adhesives; FLEXURAL strength; THERMOCYCLING
- Publication
Dental Materials Journal, 2016, Vol 35, Issue 2, p204
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2015-291