Composite dental cement composition containing a lanthanide...

A - Human Necessities – 61 – K

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A61K 6/08 (2006.01) A61K 6/083 (2006.01) A61K 6/087 (2006.01) C08K 3/10 (2006.01)

Patent

CA 2131188

A composite dental cement composition that is suitable for application with dental posts for either post insertion in a tooth or during core formation is provided, The cement composition includes a polymer matrix in an amount between about 15 and 50 weight percent, a filler in an amount between about 35 and 80 weight percent, and a lanthanide series compound in an amount between about 1 and 20 weight percent. The lanthanide series compound chemically interacts or pushes the air voids out between with the polymer matrix in order to increase compressive strength of the cement composition. Titanium powder may be added in order to increase compressive strength. A fluoride compound may further be added in order to substantially eliminate caries and further tooth decay.

a présente divulgation décrit une composition de ciment dentaire composite qui peut être appliquée avec des tenons radiculaires lors de l'insertion d'un pivot dans une dent ou durant la formation d'une clé. Cette composition est composée d'une matrice de polymère constituant entre 15 et 50 % en poids, d'un agent d'obturation constituant entre 35 et 80 % en poids et d'un composé à base de lanthanides constituant entre 1 et 20 % en poids. Le composé à base de lanthanides interagit chimiquement avec la matrice de polymère ou chasse le vide d'air qui se crée entre cette dernière et accroît ainsi la résistance à la compression de la composition de ciment. L'ajout d'une poudre de titanium permet d'accroître encore davantage la résistance à la compression, et l'addition d'un composé fluoré réduit substantiellement le risque de carie dentaire.

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