Comparative study of the fatigue strength of five acrylic denture resins.

Abstract

The aim of this in vitro study was to compare the fatigue resistance of three kinds of heat-polymerized acrylic resins (conventional heat-polymerized, rapid heat-polymerized, high impact acrylic resin), a kind of visible light-cured resin and a kind of self-cured acrylic resin. A total of 60 notched and un-notched specimens (65 mm x 10 mm x 3 mm) were fabricated, 12 from each material. The fatigue resistance was measured by applying repeated three-point bending deflection to the specimens. For statistical analysis, Kruskal-Wallis test followed by Dunn's multiple comparison tests were used. The Kruskal-Wallis test revealed significant differences in the fatigue resistance among some groups (p<0.05). Conventional- and rapid-heat polymerized resins had lower fatigue resistance values than heat-polymerized high impact acrylic resin, but the differences were statistically non-significant according to Dunn's test (p>0.05). High impact acrylic resin was also found to have significantly higher fatigue resistance value than that of self-cured resin and light-cured resin (p<0.05). Further, there was no statistically significant difference between the mean fatigue resistance value of visible light-cured resin and self-cured resin (p>0.05).

• Authors: Ozlem Gurbuz, Fatma Unalan, Idil Dikbas
• Journal: Journal of the mechanical behavior of biomedical materials (J Mech Behav Biomed Mater) Vol. 3 Issue 8 Pg. 636-9 (Nov 2010) ISSN: 1878-0180 [Electronic] Netherlands
• PMID: 20826371 (Publication Type: Comparative Study, Journal Article)
• Copyright: (c) 2010 Elsevier Ltd. All rights reserved.

Chemical References

• Acrylic Resins

Topics

• Acrylic Resins (chemistry)
• Dentures
• Hot Temperature
• Light
• Mechanical Phenomena
• Polymerization (radiation effects)