Journal of the Korean Academy of Pediatric Dentistry 2002;29(3):376-381.
Published online August 31, 2002.
THE COMPARATIVE STUDY ON THE COLOR OF THE DECIDUOUS TEETH AND RESTORATIVE MATERIALS
 
Abstract
The purpose of this study was to analyse the color of natural deciduous teeth in Korean children and to compare with that of composite resin specimens. The subjects were 148 children (80 boys and 68 girls) with good general condition and normal teeth color, aged between 3 and 6 years. The color of middle third of maxillary central incisor in deciduous teeth was examined with shade guide and then measured by means of the colorimeter CV300 which can be measured by CIELAB system. The data were analyzed statistically by SPSS program. The results were summerized as follows; 1. Over 90% of the color for the deciduous anterior teeth was in A1, A2, B1, B2 and P shade. 2. The means of deciduous teeth color were L*=58.72,a*=-1.18,b*=-0.63 by colorimeter CV300. 3. L*;a*andb* prices for A1, A2, B1, B2, P were L*,=52.52,a*=-1.90,b*=1.18* in A1 specimen, L*=54.90,a*=-1.87,b*=1.60 in A2 specimen, L*=59.80,a*=-2.70,b*=-0.63 in B1 specimen, L*=56.90,a*=-1.70,b*=1.63 in B2 specimen, L*=52.93,a*=-2.33,b*=1.10 in P specimen. The means of B1 color specimen were most similar to those of deciduous teeth color. The A1 color values were similar to the P color values. 4. The standard deviation of L*,a* was small among colors, but that of b*, in the yellowish color, was large.
Key Words: Shade, Colorimeter, Colorimeter CV300


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