http://www.monash.edu.au/policy/midas.htmRecaldentProfessor Eric...

http://www.monash.edu.au/policy/midas.htm

Recaldent

Professor Eric Reynolds' research into tooth decay led to the discovery of milk-based compounds that combat and repair the effect of acid on teeth and reduce the risk of dental caries.

Dr Reynolds and his team developed the protective compound Recaldent over 15 years. It was commercialised in 1999. Drug company Pfizer now sells chewing gum containing the product in the US, Japan and Europe. Recaldent has world market potential of more than $500 million a year."

Different method of action - Recaldent actually gets into the teeth and strengthens them. BOS compounds are different, I think they're only bound to the tooth fillings?