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磷酸酸蚀粉面釉质已成为窝沟封闭的常规，采用激光先汽化窝沟裂隙内杂质，然后再封闭的研究国内外鲜见报道。对窝沟内杂质的有效去除，将有利于窝沟封闭剂的固位。本研究以磷酸酸蚀技术作为对照，采用脉冲Ｎｄ：ＹＡＧ激光照射 面窝沟，在电镜下观察其对窝沟内杂质的汽化作用，
Phosphoric acid etching noodles enamel has become a regular pit and fissure, the use of lasers first laser vaporization of fissures in the impurities, and then closed the study rarely seen at home and abroad. The effective removal of impurities in the pit and fissure will be conducive to the retention of pit and fissure sealant. In this study, phosphoric acid etching technology as a control, the use of pulsed Nd: YAG laser irradiation fissure groove, observed under electron microscopy vaporization of fissure impurities,