Disclosed are dental compositions and methods. In accordance with one embodiment, a dental composition includes calcium, fluorine, which is generally present in the form of fluoride, and phosphate or another stabilizing anion. The composition is stable as against precipitation of calcium fluoride during transport and storage, but is unstable against the precipitation of calcium fluoride in the oral cavity of a human. In many embodiments, the amount of fluoride may be less than the amount of fluoride used in a comparable composition intended for a similar purpose. A dental method comprises applying the composition to the oral cavity of a patient, whereupon calcium fluoride precipitates from the composition.