| abstract |
Together with other accessories components, the material comprises a mixture of ion exchange resins, cationic and anionic, charged with Ca2+, F- and PO¿4?3- ions, with an approximative molar ratio of 2:1:1, respectively. The specially preferred material is the material when the resins have additionally a charge of Zn2+ ions which represents a proportion smaller than 1 %, preferably closed to 0.2 %, of the dry weight of the resin. The preferred resins are those of which the base is cross-linked polystyrene with a 2-14 % of divinylbenzene. The material is useful as primary filler in the treatment of dental decay, specially in deep caries, through remineralisation of the dentine with a composition quite similar to the original, as well as a high microhardness. It is also useful as component of toothpastes, elixirs and dental floss. |