despite almost similar fluoride dosage of both regimens , the early increase in the bone mineral density ( bmd ) of the lumbar spine was higher with mfp than with naf , reaching 11 % and 4 % , respectively , at 1 year ( p = 0.007 ) , and 21 % and 6 % , respectively , at 18 months ( p less than 0.001 ) .
C0016327
fluoride
C0037508
naf