AN ORAL CARE COMPOSITION COMPRISING A LIQUID PHASE DISSOLVED TIN; FLUORIDE IONS, A C3-5 SUGAR ALCOHOL; AN ORGANIC AND AMMONIUM CATIONS OF FORMULA (I) : R-NH+RA-[(CH2)U-NH+RB]V-RC, WHEREIN R IS A SATURATED OR UNSATURATED STRAIGHT-CHAIN HYDROCARBON RESIDUE OF 10 TO 20 CARBON ATOMS, V IS AN INTEGER FROM 0 TO 1, U IS AN INTEGER FROM 2 TO 3, AND RA,RB AND RC ARE INDEPENDENTLY SELECTED FROM HYDROGEN AND -CH2CH2OH, AND METHODS OF USING THESE COMPOSITIONS IN THE TREATMENT OR PREVENTION OF EROSIVE TEETH DEMINERALIZATION CAUSED BY FOOD ACIDS.