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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/14573

Title: Effects of curing units and staining solutions on the color susceptibility of a microhybrid composite resin
Authors: AbdulAziz Abdullah Al-Kheraif Ph.D.
Keywords: color; light-curing unit; resin composite; staining solution
Issue Date: 2011
Publisher: Journal of Dental Sciences
Abstract: Abstract Background/purpose: To examine the effect of different light-curing units and staining solutions on a microhybrid composite resin. Materials and methods: Two shades (A3 and B3) of a light-activated composite (Ecusit resin) were cured in polytetrafluoroethylene disk rings (45 each) using 3 different light-curing units: 1) a quartzetungstenehalogen (QTH) unit, 2) a light-emitting diode (LED) unit, and 3) a plasma-arc curing (PAC) unit. Two beverages (coffee and tea) were used as staining solutions, and distilled water was used as a control. Evaluations were made after 1, 7, 15, and 30 days by means of reflectance spectrophotometry. Results: Data were statistically analyzed using one-way analysis of variance, and post-hoc comparisons were made using Tukey’s test with a significance level of 5%. A Kruskale Wallis multiple-comparison test was performed to evaluate DE* values among water, tea, and coffee immersion with 2 shades of the composite. Statistically significant color changes were observed between water and coffee, and tea and coffee for different time periods; whereas no difference was seen between water and tea in LED-cured A3 Ecusit resin specimens after either 1 or 15 days of immersion, those cured by PAC after 15 days of immersion, or in LED cured B3 Ecusit resin specimens after 7 days. Conclusions: PAC-cured Ecusit resin specimens showed significantly higher discoloration than the other specimens. The staining solutions produced discoloration, while water caused the least changes.
URI: http://hdl.handle.net/123456789/14573
Appears in Collections:College of Applied Medical Sciences

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