Bioresorbable osteoconductive compositions for bone...

A - Human Necessities – 61 – L

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A61L 27/14 (2006.01) A61L 27/02 (2006.01) A61L 27/16 (2006.01) A61L 27/44 (2006.01) A61L 27/46 (2006.01) A61L 27/56 (2006.01) A61L 27/58 (2006.01)

Patent

CA 2475110

Bioresorbable osteoconductive compositions and methods of using the composition as a scaffold for bone repair in periodontal, alveolar or maxillary regeneration, bony cranial defects, and spinal regeneration are disclosed. The bioresorbable compositions contain a bioresorbable polymer, a micro or nano particulate filler and a pore creating substance. The bioresorbable polymer can be electronically unsaturated and cross-linkable with a cross-linking agent. The micro or nano filler can be any natural biocompatible material such as a metals, calcium carbonate, carbon, a biocompatible synthetic material, or a bioceramics such as hydroxyapatite. The pore creating substance can be an efferverscent agent such as a carbonate and an acid.

L'invention concerne des compositions ostéoconductrices biorésorbables et des méthodes utilisant ces compositions comme structure de support pour la réparation osseuse, notamment pour la régénération périodontique, alvéolaire ou maxillaire et pour la régénération de défauts crâniens et la régénération vertébrale. Ces compositions biorésorbables contiennent un polymère biorésorbable, une charge micro- ou nano-particulaire et une substance porogène. Le polymère biorésorbable peut être insaturé électroniquement et réticulé à l'aide d'un agent de réticulation. La charge micro- ou nano-particulaire peut être constituée de n'importe quelle matière biocompatible naturelle, telle qu'un métal, du carbonate de calcium, du carbone, une matière synthétique biocompatible, ou une biocéramique, telle que l'hydroxyapatite. La substance porogène utilisée peut être un agent effervescent, tel qu'un carbonate et un acide.

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