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在龋病预防封闭及修复体的直接粘接中,为了使合成树脂粘着于牙面,而要预先用酸对牙釉质进行蚀刻处理。这个蚀刻操作虽显著地提高了树脂的粘着力,但也使牙齿遭到了很强的脱钙。用氟化物来增强蚀刻釉面,因其应用的时间不同而分为以下几种方法: 1.将氟化物溶于磷酸溶液中在蚀刻操作时应用。操作和普通的蚀刻法相同。应用含不同浓度的氟化钠的30%磷酸溶液的结果,以用0.02%的氟化钠磷酸溶液进行蚀刻时,
In the direct adhesion of the caries preventive seal and the prosthesis, the enamel has to be etched with an acid in advance in order to adhere the synthetic resin to the tooth surface. Although this etching operation significantly improves the adhesion of the resin, it also causes the tooth to be strongly decalcified. Fluoride to enhance the etching glaze, because of its application time is divided into the following methods: 1. The fluoride dissolved in phosphoric acid solution used in the etching operation. The operation is the same as normal etching. Using the results of 30% phosphoric acid solutions containing different concentrations of sodium fluoride for etching with 0.02% sodium fluoride phosphoric acid solution,