Masking Power of Dental Opaque Porcelains

Author:

Woolsey G.D.1,Johnson W.M.1,O'Brien W.J.1

Affiliation:

1. U.S. Army Institute of Dental Research, and the University of Michigan Dental School, Ann Arbor, Michigan 48109

Abstract

A technique was developed to qualify the masking power of undiluted opaque dental porcelain by dilution of opaque powder with a clear glaze powder and by extrapolation of quantitative data gathered by reflectance spectrophotometry. Quantification of reflectance data was made on dilute opaque porcelains using the scattering and absorption coefficients in the Kubelka-Munk equation. Qualitative comparisons of undiluted opaque porcelains were made from quantitative data gathered from diluted opaque porcelains.

Publisher

SAGE Publications

Subject

General Dentistry

Reference16 articles.

1. Translucency of Dental Porcelains

2. The Optical Properties of Diffusing Materials

3. Gettleman, L.; Herzberg, T.W.; Webber, R.L.; and Mof-Fa, J.: The Effect of Metal Surface Treatment on Masking Power of Opaque Porcelain. In: Dental Porcelain: The State of the Art-1977, Yamada, H.N., Ed. Los Angeles: Univ. of Southern Calif., 1977, p. 317.

4. Jelenko, J.F.: Crown and Bridge Construction, 5th ed. New Rochelle: J.F. Jelenko Co., 1968, p. 123.

5. Johnston, J.F.; Phillips, R.W.; and Dykema, R.W.: Modern Practice in Crown and Bridge Prosthodontics, 3rd ed. Philadelphia : W.B. Saunders Co., 1971, p. 420.

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