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An in Vitro Study of the Staining Resistance of Ceramage and Filtek Z350 Nanocomposite Resin

Author: YeYuanYuan
Tutor: ZhangYanZhen
School: Zhejiang University
Course: Stomatology
Keywords: Polymer ceramic Composite resin Staining resistance Component
CLC: R783
Type: Master's thesis
Year: 2011
Downloads: 33
Quote: 1
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Abstract


Objective: by vitro experimental studies Ceramage of polymer ceramics and Filtek Z350 nanocomposite resin outer color stability under Stain . Method : two materials prepared A2 color standard test pieces 12 each , were soaked in distilled water and a commercially available coffee , red wine , green tea , save the 60 ° C water bath . Application colorimeter respectively before soaking and soak for 24 hours , 48 hours , 72 hours after the test the chromaticity values ??of each test piece , referring CIE1976-L * a * b * colorimetric system , according to the formula of △ E = [ (△ L * ) 2 (△ a *) 2 (△ b *) 2] 1/2 to calculate the corresponding color difference value . Results: 1. Distilled water the color change on the two materials are visually imperceptible (△ E lt; 1.0), after a certain time is immersed in coffee, red wine , green tea , the two groups of materials are displayed visually perceptible color change (△ E gt; 1.0), and the color difference value with time increased after soaking 72h , all color values ??than clinically acceptable level ( △ E gt ; 3.7) . Filtek Z350 coffee color difference caused the most significant (p lt; 0.05); In on Ceramage , red wine color difference caused by the most significant ( p lt ; 0.05) . In the role of coffee , green tea , Ceramage color values ??were less than Filtek Z350 (p lt; 0.05), while in the wine under Ceramage the color difference value is greater than Filtek Z350 ( p lt ; 0.05) . 4 coffee and red wine color change mainly to : reduce the value of the L * , b * values ??increase , a * ??value change was not obvious , and the green tea is mainly for the increase in b * values ??, L * value and a * value change not obvious. Conclusion : Ceramage polymerization porcelain and Filtek Z350 nano composite resin exogenous colorant produced a significant color change after soaking , and color difference is increased with time . The anti coloring properties of the two materials related to the type of colorant , Ceramage polymerization porcelain resist coffee and green tea coloring capabilities are stronger than FiltekZ350 nano- composite resin resist red wine coloring the former than the latter , select two clinical kinds of materials can be the patient 's eating habits as a factor .

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