This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Ma, T. Articles by Koran, A. Search for Related Content PubMed PubMed Citation Articles by Ma, T. Articles by Koran, A. Social Bookmarking                         What's this?

The Color Accuracy of the Kubelka-Munk Theory for Various Colorants in Maxillofacial Prosthetic Material

Department of Fixed Prosthodontics, School of Dentistry, University of the Pacific, San Francisco, California 94115

W.M. Johnston

Section of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio 43210

A. Koran

Department of Biomaterials, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109

The reflectance model developed by Kubelka and Munk was evaluated for agreement in color prediction of thick pigmented samples and for linearity of optical absorption and scattering coefficients with concentration of colorant in maxillofacial elastomer. The colorants tested were generic opacifiers, dry mineral earth pigments, and fibrous colorants. Significant linear relationships were commonly found between the optical coefficients and the concentration of the colorants. These relationships indicated occasional optical interaction between the colorants and the elastomer. Color differences between theoretical and observed colors of the thick samples averaged 2.96, 3.47, and 1.60 for the opacifiers, mineral earth pigments, and fibrous colorants, respectively, when measured using the CIELAB uniform-color space. The agreement between theoretical and observed colors was significantly closer for the fibrous colorants than for the dry mineral earth pigments of the same labeled color.

REFERENCES

• Billmeyer, F.W., Jr. and Abrams, R.L. (1972): Predicting Color by the Kubelka-Munk Equations in Opaque and Translucent Systems, Soc Plast Eng Tech Paper 18:117-120.
• Billmeyer, F.W., Jr. and Abrams, R.L. (1973): Predicting Reflectance and Color of Paint Films by Kubelka-Munk Analysis. I. Turbid Medium Theory, J Paint Tech 45:23-30.
• Billmeyer, F.W., Jr. and Richards, L.W. (1973): Scattering and Absorption of Radiation by Lighting Materials, J Color Appearance 2:4-15.
• C.Le., Commission Internationale de l'Eclairage ( 1976): Recommendations on Uniform Colour Spaces, Colour Difference Equations, and Metric Colour Terms, Supplement No. 2 to Publication No. 15, Bureau Central de la CIE, Paris.
• C.I.E., Commission Internationale de l'Eclairage (1985): Colorimetry, Official Recommendations of the International Commission on Illumination, 2nd ed., Publication CIE No. 15.2(TC-3.1), Bureau Central de la CIE, Paris.
• Duntley, S.Q. (1942): The Optical Properties of Diffusing Materials, J Opt Soc Am 32:61-70.
• Johnston, R.M. (1973): Color Theory. In: Pigments Handbook, Vol. 3, T.C. Patton, Ed., New York: Wiley, pp. 229-288.
• Johnston, W.M.; O'Brien, W.J.; and Tien, T.-Y. (1986): The Determination of Optical Absorption and Scattering in Translucent Porcelain, Color Res Appl 11:125-130.
• Judd, D.B. (1937): Optical Specification of Light-scattering Materials, Natl Bur Stand J Res 19:287-317.
• Kubelka, P. (1948): New Contributions to the Optics of Intensely Light-scattering Materials. Part I, J Opt Soc 38:448-457.
• Kubelka, P. and Munk, F. (1931): Ein Beitrag zur Optik der Farbanstriche, Z Tech Phys 12:593-601.
• Kuehni, R.G. (1975): Computer Colorant Formulation, Lexington, MA: Lexington Books, pp. 11-29, 72-74.
• Miagawa, Y.; Powers, J.M.; and O'Brien, W.J. (1981): Optical Properties of Direct Restorative Materials, J Dent Res 60:890-894.[Abstract/Free Full Text]
• Mudgett, P.S. and Richards, L.W. (1973): Kubelka-Munk Scattering and Absorption Coefficients for Use with Glossy, Opaque Objects, J Paint Technol 45:44-53.
• O'Brien, W.J.; Johnston, W.M.; and Fanian, F. (1985): Double-layer Color Effects in Porcelain Systems, J Dent Res 64:940-943.[Abstract/Free Full Text]
• Saunderson, J.L. (1942): Calculation of the Color of Pigmented Plastics, J Opt Soc Am 32:727-736.[CrossRef]
• Woolsey, G.D.; Johnston, W.M.; and O'Brien, W.J. (1984): Masking Power of Dental Opaque Porcelains, J Dent Res 63:936-939 ( Erratum, J Dent Res 63:1115).[Free Full Text]

Journal of Dental Research, Vol. 66, No. 9, 1438-1444 (1987)
DOI: 10.1177/00220345870660090601


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Ma, T. Articles by Koran, A. Search for Related Content PubMed PubMed Citation Articles by Ma, T. Articles by Koran, A. Social Bookmarking                         What's this?