With the increased use of topical fluorides in young children, there are concerns about possible adverse side-effects, in particular the development of dental fluorosis. A recent Cochrane systematic review found weak evidence that children starting to use fluoride toothpaste under 12 months of age may have increased risk of mild fluorosis, but drew no conclusion regarding the risk of using other types of topical fluorides, due to lack of information (Wong et al., 2010).