치질 잔존량에 따른 색조변화에 관한 연구
A Study on the Color Changes According to the Amount of Remaining Tooth Material
염태호, 김정범, 홍정표, 황의환,
소속 상세정보
염태호 ( ) - 경희대학교
김정범 ( ) - 경희대학교
홍정표 ( ) - 경희대학교
황의환 ( ) - 경희대학교
KMID : 0362319860120010131
Abstract
The purpose of this study was to observe the color matching of lining or filling materials according to the remaining tooth material.
Twenty-seven freshly extracted human central incisors were used in this experiments. The teeth were stored in saline solution at room temperature after extraction.
All teeth were cut parallel to the tangent to height of contour on labial surface from the lingual surface until the pulp were completely removed. Then 27 teeth were devided into 0.5mm, 1.0mm and 1.5mm reduction groups according to the thickness of cutting the lingual surfaces of teeth.
The specimens of control group were three teeth of 27teeth with cutting the lingual surface same mode as above described.
In the specimens of experimental groups, 8 kinds of lining and filling materials ; FUJI IONOMER TYPE Ⅱ(G-C Co. Japan), LINING CEMENT(G-C Co. Japan), Dycal(Caulk, U.S.A.), CLEARFIL FⅡ(Kuraray Co. U.S.A.), HY-BOND(G-C Co. Japan) and LIV-CENERA(G-C Co. Japan); applied on the back of 24 teeth with 0.5mm, 1.0mm and 1.5mm cut thickness of lingual surfaces.
Three teeth of control group did not applied linging or filling materials on the back of 3 kinds of different thickness of cutting the lingual surfaces.
The absorbances of total 27 specimens were obtained by reflection spectrophotometer. (Cary 17 D, Varian Co, U.S.A.)
The following conclusions were drawn from above the results ;
1. The absorbance patterns in both experiment and control groups were gradually decreased with increasing wavelength of spectra.
2. The absorbance patterns were not decreased in relation to the kinds of lining or filling materials, but the amount of the remaining tooth materials.
3. In 0.5mm reduction group, FUJI IONOMER TYPE Ⅱ, LINING CEMENT, LIV-CENERA and Copalite applied on the back of cut lingual surface showed similar absorbance patterns as control group.
4. The specimens which were reduced up to 1.0mm thickness and lined with FUJI IONOMER TYPE Ⅱ and LINING CEMENT showed the comparable absorbance patterns to the control group.
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