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KMID : 0353420160400030124
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Oral Biology Research
2016 Volume.40 No. 3 p.124 ~ p.128
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Color difference of lithium disilicate ceramic veneer on glazing effect
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Kahm Se-Hoon
Lee Byoung-Jin
Seo Min-Seock
Kim Sung-Joon
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Abstract
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The purpose of this study was to compare the color difference (ΔE*) of lithium disilicate ceramic veneers with and without glazing. Square specimens 0.6 mm thick were made of the following materials with or without glazing (n=40): IPS e.maxPress and Styleveneers. The color coordinates (CIE L* a* b*) of the specimens were measured with a colorimeter (ShadeEye NCC®). The total color difference (ΔE*) was calculated from the color difference of the materials with and without glazing. Data were analyzed with an unpaired t-test and multiple regression analysis using SPSS 18.0 (p=0.05). The ΔL* of IPS e.maxPress and Styleveneers specimens were -0.35±0.99 and - 0.42±0.78, respectively. The Δa* of these specimens were 0.09±0.16 and -0.01±0.14. The Δb* of these specimens were -1.60±0.84 and -1.22±0.42. The ΔE* of the specimens were 1.95±0.69 and 1.45±0.58. The differences between the products were not statistically different. Multiple regression analysis showed that Δb* and ΔL* improve ΔE*. Within the limitations of this study, we can conclude that the glazing process influences color change of lithium disilicate ceramic veneers.
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KEYWORD
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Ceramic, Color chamnge, Glazing, Lithium disilicate, Veneer
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