Color difference of lithium disilicate ceramic veneer on glazing effect
감세훈, 이병진, 서민석, 김성준,
소속 상세정보
감세훈 ( Kahm Se-Hoon ) - Jeju National University School of Medicine Department of Dentistry
이병진 ( Lee Byoung-Jin ) - Beans Institute for Oral Health Research
서민석 ( Seo Min-Seock ) - Wonkwang University School of Dentistry
김성준 ( Kim Sung-Joon ) - Jeju National University School of Medicine Department of Dentistry
KMID : 0353420160400030124
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.
키워드
Ceramic; Color chamnge; Glazing; Lithium disilicate; Veneer
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