Loss of enamel due to dietary causes, either by acid erosion or the fe
rmentation of dietary sugars, is well known. These processes will be a
ffected by a number of factors, one of which is the ability of the foo
d to adhere to the enamel. The aim of this study was to determine the
thermodynamic work of adhesion of a number of soft drinks to enamel. T
he results indicated significant differences in the ability of various
drinks to adhere to enamel in vivo. In addition to obtaining a rankin
g of the drinks under test, the likelihood of them being displaced by
saliva was considered.