Gum Containing Calcium Fluoride Reinforces Enamel Subsurface Lesions in situ. J Dent Res. 2012 Feb 15; Authors: Kitasako Y, Sadr A, Hamba H, Ikeda M, Tagami J Abstract The aim of this study was to assess the effect of chewing gum containing phosphoryl oligosaccharides of calcium (POs-Ca) and a low concentration of fluoride (F) on …