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Pervasion of beta-tricalcium phosphate with nanodiamond particles yields efficient and safe bone replacement material
Robert G Stigler1, Magdalena M Schimke2, Simon Bigus1
1Medical University Innsbruck, Department of Oral and Maxillofacial Surgery, Innsbruck, Austria.
Abstract:
Biofunctionalization of scaffold materials can enable the healing of large bone defects. In case of minimally invasive guided-bone regeneration (GBR), limitations are however hard-to-control side effects related to the potential release of biofactors into the systemic environment. Biofactors can be stably bound to nanodiamond particles (ND) through physisorption. We therefore tested the biological and clinical effects of refining beta-tricalcium phosphate (βTCP) with ND in vitro and in vivo. In vitro, βTCP carrying 4% ND resulted in enhanced attachment of mesenchymal stem cells. When assessing GBR after lateral augmentation of the mandible in sheep showed that ND in βTCP resulted in a consistently steady bone formation when compared to pure βTCP, demonstrating the biological inert behavior and the potential clinical safety of ND.
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