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KMID : 0362220100370030205
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Journal of The Korean Research Society for Dental Materials
2010 Volume.37 No. 3 p.205 ~ p.210
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Effect of Denture Cleaners on the Flexural Properties of Denture Base Resin
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Choi Esther
Yu Sang-Hui
Oh Seung-Han
Bae Ji-Myung
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Abstract
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The aim of this study was to evaluate the effect of denture cleaners on the flexural properties of denture base resins according to the type and immersion times of denture cleaners. The heat-polymerized resin(VertexRS, Dentimax, Netherlands) was used as the matrix, and 4 kinds of denture cleaner (Denfix-A, polident, cleadent, and Bony Plus) were tested in this research. The test specimens(n=5) of each group were immersed in 4 kinds of denture cleaners. After 1week, 2, 3, and 4weeks of immersion periods, the test specimens were evaluated by using mechanical strength test. The solution of denture cleaner were exchanged every 24 hours. The flexural s trength and modulus were measured by an universal t esting machine(Z02 0, Zwick, Germany) at a crosshead speed of 5 mm/min in a three-point bending mode. The data was analyzed by one-way ANOVA and the Duncan’s multiple range test(��=0.05).
The results of dental cleaner comparison test indicated that there was no significant difference between all
test groups and control group regardless of immersion periods(p>0.05). However, the flexural modulus of
Polident and Bony Plus groups were significantly lower than that of the control group(p<0.05) on the condition
of 2 weeks of immersion. From the results of immersion period comparison test, flexural strength of all experimental
group immersed for 1 week were significantly higher than that of the group immersed for 4
weeks(p<0.05). However, the flexural modulus of all experimental groups did not show any significant difference
compared to that of control group regardless of immersion periods(p>0.05).
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KEYWORD
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Denture base resin, Denture cleaner, Flexural properties
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