Abstract

The extent of the resistance of human dental enamel against acid decalcification by using a normal pulse Nd:YAG laser was observed. Furthermore, specimens of human enamel were topically applied with a solution of acidulated phosphate fluoride (APF) before and after the laser irradiation. APF treatment after the laser irradiation caused the most remarkable acid resistance of the enamel with a greater fluoride uptake into the enamel structure, whereas the APF treatment before laser irradiation caused a lesser effect.

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