Disclosed herein are compositions comprising a fluoride ion source, a poly(propylene oxide)/poly(ethylene oxide) copolymer, and optionally a sparingly soluble acid; and methods of using and of making the same.本發明係關於包含氟化物離子來源、聚(氧化丙烯)/聚(氧化乙烯)共聚物,及任意難溶性酸之組成物;及其使用及製造之方法。