Color difference of lithium disilicate ceramic veneer on glazing effect
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초록
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.
Abstract
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.
참고문헌 (28)
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