Self-healing dental composites and related methods

A - Human Necessities – 61 – K

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A61K 6/08 (2006.01)

Patent

CA 2689031

Dental restorative composites having self-healing capabilities to repair discontinuities in the composite are provided. Dental restorative composites according to the present invention include a microsphere that encapsulates a monomer. When a fracture occurs, the microsphere is ruptured and the monomer fills the fracture. Depending on the monomer present in the microsphere, it is polymerized by a polymerization initiator or by an olefin metathesis catalyst present in the dental restorative composite. Self-healing dental restorative composites provide increased resistance to fracturing, and thus remain substantially intact for a longer period of time, preserving the remedial integrity of the dental repair or reconstruction.

La présente invention concerne des composites de restauration dentaire dotés d'une capacité d'auto-régénération, qui permet la réparation des discontinuités du composite. Les composites de restauration dentaires selon la présente invention incluent une microsphère qui encapsule un monomère. Lorsqu'une fracture survient, la microsphère est rompue et le monomère remplit la fracture. En fonction du monomère présent dans la microsphère, il se produit une polymérisation par un initiateur de polymérisation ou par un catalyseur de métathèse d'oléfine présent dans le composite de restauration dentaire. Les composites de restauration dentaire d'auto-régénération fournissent une résistance accrue à la fracture. Ils restent ainsi substantiellement intacts pendant une plus longue période, préservant ainsi l'intégrité correctrice de la réparation ou de la reconstruction dentaire.

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