Compositions for altering the color of teeth, including tooth-coating compositions comprising a colorant and an acrylate polymer. Colorants among those useful herein include whiteness-imparting particulate materials, such as hydroxyapatite.改變牙齒顏色之組成物,包括含有一種著色劑和一種丙烯酸酯聚合物之牙齒-塗覆組成物。可用於本發明中之著色劑包括賦予潔白度之顆粒物質,諸如羥基磷灰石。