The present invention refers to oral care and oral hygiene products having photocatalytic activity comprising particles of a calcium phosphate compound, superficially functionalised with TiO2 nanoparticles in crystalline form, said TiO2 nanoparticles having: a) a substantially lamellar morphology; b) an aspect ratio (AR) comprised between 5 and 30; c) a surface structure having face (001) as outermost face of the crystalline lattice; and d) wherein the TiO2 is in the form of anatase, optionally mixed with rutile and/or brookite.本發明係一種具有光催化活性且包含以二氧化鈦奈米粒子完成表面官能基化之無機粒子之口腔保健與口腔衛生產品,該等二氧化鈦(TiO2)奈米粒子的特徵在於:a)實質為頁片狀之形態;b)介於5與30之間之長寬比(AR);c)表面結構係以(001)晶面作為晶格之最外層晶面:及d)該TiO2為銳鈦礦,且在需要時,尚可混入金紅石及/或板鈦礦。