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KMID : 1004520150310020096
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Journal of Dental Rehabilitation and Applied Science
2015 Volume.31 No. 2 p.96 ~ p.103
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Spectrophotometic analysis of the influence of substrate on the color of dental ceramics
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Song Young-Gyun
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Abstract
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Purpose: The purpose of this study was to spectrophotometrically evaluate the influence of porcelain layer thickness and substructure.
Materials and Methods: Four groups of porcelain specimens (metal and ceramic substructure) was prepared for analysis. Color parameters were measured with spectrophotometer and color difference (ΔE*) were calculated. T-test and one-way ANOVA test were used to find out significant difference and Tukey test was used to identify where the difference ware.
Results: Increasing the thickness of porcelain decreased values (P < 0.05). Increasing the thickness of porcelain on ceramic substructure decreased the a* (P < 0.05) but, the b* were not statistically different. Total color difference (ΔE*) were below 1 when the difference of porcelain thickness were 0.5 mm.
Conclusion: The thickness of porcelain are the factor effecting on color. This study will help the color are controlled by changing the thickness of porcelain clinically. (J D
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KEYWORD
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spectrophotometer, dental porcelain, color
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