Suzanne, My youngest child had decay on his four front teeth and two upper 1st molars. None of my other three had this. ALL were nursed 3+ years. NB: He was the only one to have a bout of oral thrush and the decay was noticed shortly afterwards, at about a year of age. ONLY the teeth erupted during the yeast bout were affected despite continued nursing at night, during the day etc., etc. While we were always careful about brushing I did not become a zealot with this child concerning rinsing or brushing. At about 2.5 yrs. one tooth was removed, the others capped. At 4.5 he has no further decay. comments? Rita