Effects of a chewing gum containing phosphoryl oligosaccharides of calcium (POs-Ca) and fluoride on remineralization and crystallization of enamel subsurface lesions in situ. J Dent. 2011 Aug 19; Authors: Kitasako Y, Tanaka M, Sadr A, Hamba H, Ikeda M, Tagami J Abstract OBJECTIVES: Manufacturers are adding fluoride (F) to calcium-containing chewing gums to further promote …