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J Dent Res 54(6): 1154-1160, 1975
© 1975 International and American Associations for Dental Research
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Effect of Prior Acid Etch on Rate of Sn3F3PO4 Formation Subsequent to Topical Application of SnF2

WILLIAM D. NORDQUIST 1, DAVID J. KRUTCHKOFF 1, and STEPHEN H. Y. WEI 1

1 School of Dental Medicine, University of Louisville, Louisville, Kentucky 40201, USA; School of Dental Medicine, University of Connecticut, Farmington, Connecticut 06032; and College of Dentistry, University of Iowa, Iowa City, Iowa 52242

The effect of prior acid etch on the rate of Sn3F3PO4 formation subsequent to in vitro SnF2 interaction with human dental mineral has been investigated using light microscopy, surface replicas, and internal reflection spectroscopy. Results showed that Sn3F3PO4 forms more rapidly on etched surfaces as compared with nonetched controls. The observed accelerated rate was attributed to increased reaction surface provided by prior acid etch plus a rougher surface conducive to crystal nidus formation.

Submitted on February 14, 1975
Accepted on June 13, 1975






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