Temporary root canal sealer dispersion

A - Human Necessities – 61 – K

Patent

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A61K 6/00 (2006.01)

Patent

CA 2756382

A temporary root canal sealer dispersion having a pH of at least 9 and comprising: (i) an aqueous dispersion medium comprising an oligomer and/or polymer having Lewis basic groups, and optionally a hydroxide of an alkali metal and/or a hydroxide of an alkaline earth metal, and (ii) a dispersed phase comprising a radio- opaque filler, wherein the weight ratio of oligomer and/or polymer having Lewis basic groups to hydroxide of an alkali metal and/or hydroxide of an alkaline earth metal is at least 0.5 when said aqueous dispersion medium comprises a hydroxide of an alkali metal and/or a hydroxide of an alkaline earth metal.

La présente invention concerne une dispersion de produit colmatant pour canal radiculaire temporaire, présentant un pH au moins égal à 9 et comprenant les éléments suivants : (i) un milieu de dispersion aqueuse comprenant un oligomère et/ou un polymère doté de groupes de base de Lewis, et éventuellement un hydroxyde d'un métal alcalin et/ou un hydroxyde d'un métal alcalino-terreux ; et (ii) une phase dispersée comprenant un produit de remplissage radio-opaque. Le rapport pondéral entre l'oligomère et/ou le polymère ayant des groupes de bases de Lewis d'une part, et l'hydroxyde d'un métal alcalin et/ou l'hydroxyde d'un métal alcalino-terreux d'autre part, est au moins égal à 0,5 lorsque ledit milieu de dispersion aqueuse comprend un hydroxyde d'un métal alcalin et/ou un hydroxyde d'un métal alcalino-terreux.

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