두께에 따른 Gl Cement의 색상 변화 및 각 Shade 내의 색상 변화 추이도
COLOR CHANGE WITH CEMENT THICKNESS AND COLOR SHIFT PATTERN OF EACH SHADE ERIES IN GI CEMENT
박기연, 신동훈,
소속 상세정보
박기연 ( ) - 가톨릭대학교
신동훈 ( ) - 가톨릭대학교
KMID : 0362319970220020622
Abstract
Glass ionomer cements, which had been developed in 1972, were widely used as an
agent for cementation, base, pit and fissure sealant, and esthetic filling material with the
advantages of excellent biocompatibility, anti-cariogenic fluoride release.
Specimens were made to evaluate the color change of Glass ionomer cement with a
newly developed improved Fuji II LC. specimens for color change study with cement
thickness of 1, 2, 3㎜ were made and those for the study of color shift pattern were
made with the assumption that new mid-shade can be made by mixing of equal amount
of both shades in 2㎜ thickness.
After 24 hours in a 37℃ incubator, CIELAB color spaces were evaluated with a
spectrophotometer.
The results were as follows; 1. All specimens discolored to dark and blue with an
increased thickness in all shades (p<0.05).
2. There were significant a＊ space (red-green direction) changes in every A, B, C, D
shade series except the relationship between 1㎜ and 2㎜ thickness groups in B shade
series. But the changes were irregular, i.e., each shade series has its own pattern.
3. Each shade series showed its own specific color shift pattern in all L＊, a＊, b＊
spaces.
4. B shade series showed less amont of changes in △±E than those of A and C shade
series (p<0.05), but there was no significant difference in △E within each shade series.
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