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1 Department of Preventive Dentistry, The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
The etching effect of 50% H3PO4 applied together with 2% NaF or SnF2 was compared with the effect of H3PO4 on pre- and postfluoridated enamel by scanning electron microscopy. Substantial etching of enamel resulted with use of 50% H3PO4 with 2% NaF. High fluoride incorporation in the surface provided additional protection of the conditioned enamel.
Submitted on March 27, 1974
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