Fluoride ion-releasing dental composition

A - Human Necessities – 61 – K

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A61K 6/08 (2006.01) A61K 6/00 (2006.01)

Patent

CA 2601816

A fluorine ion-releasable composition for dental purposes comprising (a) an inorganic powder, (b) a fluorine ion-releasable 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 of a polysiloxane formed on the surface 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 hydrogenfluoride, a metal fluoride, a polymer having a vinyl monomer bearing an acid fluoride group as the constitutional unit and a fluorine-containing phosphazene monomer. The composition can provide a high anti-cariogenicity to tooth structure for 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.

L'invention concerne une composition libérant des ions fluor à des fins dentaires comprenant (a) une poudre inorganique, (b) une substance libérant des ions fluor, (c) un monomère polymérisable et (d) un initiateur de polymérisation. La poudre inorganique (a) contient une particule complexe comprenant une particule de base composée d'une substance inorganique et une couche composée d'un polysiloxane formé sur la surface de la particule de base, et la substance libérant des ions fluor (b) comprend au moins un composant choisi parmi le groupe constitué de fluorure d'ammonium, fluorure d'hydrogène d'ammonium, fluorure métallique, un polymère ayant un monomère vinylique portant un groupe fluorure acide en tant que motif squelettique et un monomère phosphazène contenant du fluor. La composition peut fournir une grande résistance aux caries de longue durée à la structure dentaire via l'action de l'ion fluor libéré de manière contrôlée par la composition. De ce fait, la composition peut être utilisée de manière appropriée en tant qu'adhésif dentaire, agent de remplissage des dents, résine de reconstitution de la partie centrale de la dent, produit d'étanchéité de cavités et de fissures, matériau de revêtement dentaire (manucure), ciment dentaire ou similaires.

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