A solution is put on the tooth that makes the surface a little rough. (it is easier for the sealant to stick to a slightly rough surface.)
在牙齿上涂上一层溶液，使得牙齿表面变得一点点粗糙。(保护胶更容易在有点粗糙的表面粘牢)。
Surface paint molecules provide inlaid evenly and slightly rough, organic or inorganic material coating shall contain polar groups charged.
提供镶嵌油漆分子均匀而微粗糙的表面，涂漆层中的有机或无机材料应含有带电荷的极性官能团。
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