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Assessment of visible light absorption using different curing cycles and colorant drinks. In vitro study | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 21, Issue 2, 2009, Pages 10-13 | ||
| Authors | ||
| Thikra M. Hachim; Abdalbasit A. Fatihallah; Ghassan A. Al-Taie | ||
| Abstract | ||
| ABSTRACTBackground: This study concerned with the stainability of acrylic resin cured by different methods of curing immersedin different colorant drinks and time intervals.Materials and methods: Thirty-six specimens were prepared, eighteen specimen were cured by conventional (shortcycle) and other eighteen specimens were cured by Ivomate or pressure curing then the specimens immersed indifferent colorant drinks (Tea, Coffee and water), and the reading for amount of visible light absorption obtained atthe end of each time intervals then the values obtained statistically analyzed by both ANOVA Table and studentspaired t-test .Results: The short curing cycle significantly affect the color stability less than that of ivomate curing cycle whencompare the results by using ANOVA Table, while comparing the measurement of visible light absorption at the endof each time intervals of both curing cycles by using student t-test show that samples made by using short curingcycle significantly higher stain resistance than that made by ivomate curing cycle.Conclusion: Color stability affected by porosity, residual monomer and fog percentage presents in the acrylic resinsamples .those variables directly affected by heat and pressure applied in the curing cycle .so that reducing theheat and decrease pressure result in lowering their percentage.Keywords: Acrylic resin, spectrophotometer, colorant drinks. J Bagh Coll Dentistry 2009; 21(2):10-13) | ||
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