Fluoride – Whilst the benefits of fluoride in reducing the efficacy of soft drinks in promoting erosive tooth wear has been reported by a multitude of in vitro studies, this claim has not been sub- stantiated consistently by in vitro clinical analysis. In 1987, Sorvari et al.31 showed that the addition of fluoride to potentially erosive sports beverages reduced their erosive potential. Similar results have been reported by in vitro studies involv- ing the addition of fluoride and xylitol to orange juice.