Gutta-percha compositions for obturating dental root canals
AssigneeDENTSPLY International Inc.
InventorsCarolyn M. Primus, James L. Gutmann
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Abstract
Improved compositions comprising a mixture of gutta-percha and a hydraulic material containing calcium silicate, calcium aluminate, calcium phosphate, and calcium sulfate compounds are provided. Preferably, the composition includes hydroxylapatite mineral. The composition is particularly suitable for obturating and sealing dental root canals. The composition should provide a stable barrier to bacterial and fluid leakage in the root canal system of a tooth. In addition, the composition should help promote the growth of new bone and tissue surrounding the root tip area.
Claims11
A composition for sealing a tooth root canal, comprising a mixture of about 10% to about 50% by weight of gutta-percha and about 1% to about 30% by weight of Dentalcrete material,
- wherein the Dentalcrete material comprises tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite, calcium sulfate dihydrate, and radiopaque component, and
- wherein the radiopaque component is selected from the group consisting of bismuth oxide, tantalum oxide. cerium oxide tin oxide, zirconium oxide compounds and radiopaque glasses containing tantalum, barium and strontium, and mixtures thereof.
A method of sealing a tooth root canal, comprising the steps of:
- a) providing a sealing composition comprising a mixture of about 10% to about 50% by weight of gutta-percha and about 1% to about 30% by weight of Dentalcrete material;
- b) preparing the root canal in the tooth to be filled;
- and
- c) introducing the sealing composition into the root canal, compacting it and allowing the composition to harden and seal the root canal,
- wherein the Dentalcrete material comprises tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite. calcium sulfate dihydrate, and radiopaque component. and
- wherein the radiopaque component is selected from the group consisting of bismuth oxide, tantalum oxide, cerium oxide tin oxide, zirconium oxide compounds and radiopaque glasses containing tantalum, barium and strontium. and mixtures thereof.
Dependencies are inferred from the claim text.