a 3-year , double-blind , randomized caries trial was conducted to evaluate the relative anticaries efficacy of four sodium fluoride dentifrices containing 250 ppm fluoride , 1,000 ppm fluoride in combination with 1 % disodium 1-hydroxyethylidene-1.1-bisphosphonate ( hebp ) , and 1,000 ppm fluoride in combination with 1 % disodium azacycloheptylidene-2.2-bisphosphonate ( ahbp ) .
C0011334
caries
C0037508
sodium fluoride