| 简介 |
(57) Abstract : A fluorine ion-releasable composition for dental purposes comprising (a) an inorganic powder, (b) a fluorine ion-re- leasable substance, (c) a polymerizable monomer and (d) a polymerization initiator, the inorganic powder (a) comprising a complex particle comprising a base particle composed of an inorganic substance and a layer composed ofa polysiloxan¢ formed on the sur- lhce of the base particle, and the fluorine ion-releasable substance (b) comprising at least one component selected from the group consisting of ammonium fluoride, ammonium hydrogcnfluoride, a metal fluoride, a polymer having a vinyl monomer bearing an acid fluoride group as the constitutional unit and a fluorine-containing phosphazen¢ monomer. The composition can provide a high anti-cariogenicity to tooth structure lbr a prolonged period of time by the action of a fluorine ion released from the composition in a controlled manner. Therefore, the composition can be used suitably as a dental adhesive, a dental filler, a resin for core build-up for dental purposes, a pit and fissure sealant, a dental coating material (manicure), a dental cement or the like. |
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