심미충전재의 적층에 따른 색좌표에 관한 연구
REGRESSION ANALYSIS OF COLOR COORDINATES AFTER LAYERING ESTHETIC FILLING MATERIALS
전재훈, 이성재,
소속 상세정보
전재훈 ( ) - 원광대학교 치과대학
이성재 ( ) - 원광대학교 치과대학 치과재료학교실
KMID : 0362219970240020259
Abstract
요약
1. 겹쳐서 측정한 CIE b* 값과 겹치기 이전 재료의 색좌표간의 다중상관계
수는 재료의 종류 및 조합에 따라 차이가 있었으나 0.852∼0.986으로 긴밀한 상관관계를 보
였으며, 주로 위쪽에 놓여진 재료의 b*값의 영향을 받았는데 상관계수는
0.765∼0.972이었다(p<0.05).
2. 겹쳐서 측정한 CIE L*값과 겹치기 이전 재료의 색좌표간의 다중상관계
수는 재료의 종류 및 조합에 따라 차이가 있었으나 0.548∼0.879이었으며, 주로 위쪽에 놓여
진 재료의 L* 값의 영향을 받았는데 상관계수는 0.297∼0.602이었다(p<0.05).
3. 겹쳐서 측정한 CIE a* 값과 겹치기 이전 재료의 색좌표간의 다중상관계
수는 재료의 종류 및 조합에 따라 차이가 있었으나 0.317∼0.460으로 상관의 정도가 낮았으
며, 겹치는 재료의 조합에 따라 영향을 가장 많이 주는 색좌표가 차이가 있었다.
4. 겹쳐서 측정한 CIE b* 값은 겹치기 이전 재료의 색좌표를 통하여 예측
할 수 있는 다중상관계수에 의한 설명력이 가장 높았으며, CIE a*값의 설명력
이 가장 낮았다.
#초록#
When filling teeth with light cured composite resins, shade matching can be
effectively accomplished by layering. The darker shade filling material should be placed
first and then overlaid with the more translucent or lighter shade filling material. In the
sandwich technique, which uses glass ionomer base or liner and composite resin, the
same optical principles can be applied.
Shade matching is one of the important steps in an esthetic filling procedure. Using
the incremental layering technique, more life-like esthetic vitality characterization is
possible. However, the resultant shade of filled materials is not predictable simply by
the color matching with a shade guide. Most layering procedures are performed by
experience rather than prescribed scientific procedure.
In this study, multiple regression analyses among each color coordinates(CIE
L*, a*, b*) of layered filling material and those
of upper and lower part constituent materials were performed. Two kinds of light cured
composite resins and two kinds of resin-modified glass ionomers of each 5∼6 shades
were studied. Specimens of 1 mm thickness were made, and the color coordinates of
each material were measured with the Colorimeter(Model TC-6FX, Tokyo Denshoku Co.,
Japan). After layering 2 specimens of different shades, the color coordinates were
measured. Each coordinate after layering was used as a dependant variabte, and six of
the color coordinates before layering(CIE L*, a*,
b* of lower and upper part material) were used as independent variables
in forward regression analysis. The analyses were performed by the grouping of
composite resin layering, resin-modified glass ionomer layering, or the simulated
sandwich technique. From this experiment, the following results were obtained :
1. The multiple R value of the CIE b* after layering by the color
coordinates before layering Was different depending on the type and combination of the
materials, and was 0.852∼0.986. The CIE b* after layering was closely
correlated with the b* value of upper part material, and the correlation
coefficient was 0.765∼0.972(p<0.05).
2. The multiple R value of the CIE L* after layering by the color
coordinates before layering was different depending on the type and combination of the
materials, and was 0.548∼0.879. The CIE L* after layering was mainly
influenced by the L* value of upper part material, and the correlation
coefficient was 0.297∼0.602(p<0.05).
3. The multiple R value of the CIE a* after layering by the color
coordinates before layering was different depending on the type and combination of the
materials, and was 0.317∼0.460(P<0.05). However, the color coordinate of before layering
mainly affecting the CIE a* after layering was different depending on the
combination of material.
4. The multiple R value of CIE b* after layering by the color
coordinates before layering was higher than those of a* or
L* after layering.
composite rosin; resin-modified glass ionomer; incremental layering; color coordinate; regression analysis;
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