Abstract: A method of bone repair that includes applying to a subject a composite that comprises at least one calcium phosphate, at least one polyamine polymer material; and a linking structure covalently crosslinking the calcium phosphate to the polyamine polymer material, wherein the linking structure is covalently bonded to the calcium phosphate via a —O—Si— moiety or an isocyanato moiety and the linking structure is covalently bonded to the polyamine polymer material via amine groups of the polyamine polymer. Also disclosed is a combination of ingredients comprising at least one polyamine polymer; and calcium phosphate particles that are substantially coated with at least one functional group that is covalently reactive with amine groups on the polyamine polymer; wherein the ingredients are adapted for injection into a subject for forming a bone replacement material in vivo.

Abstract: The invention generally relates to postnatal dental stem cells and methods for their use. More specifically, the invention relates in one aspect to postnatal dental pulp stem cells, use of the cells to generate dentin, and differentiation of the cells. In another aspect, the invention relates to human postnatal deciduous dental pulp multipotent stem cells, use of the cells to generate dentin, and differentiation of the cells.