Chemical and Physical Properties of Altered and Sound Enamel
II. Relative Dissolution and Residue Light Absorption (Color)
JACK M. POSEN 1
1 Eastman Dental Dispensary, Rochester, New York
Similar volumes of altered and adjacent normal enamel were ground from teeth from a low-fluoride area. Altered enamel, as exemplified by white spots, brown spots, and
stained enamel, was significantly and consistently less soluble in pH 4.44, KAc buffer, than adjacent normal enamel. However, there did not seem to be any relationship between the extent of dissolution and the degree of discoloration, as measured by relative transmission and reflectance optical densities.
Submitted on August 14, 1961
