Abstract
An in situ crosslinkable, biodegradable, methacrylate-encapped porous bone scaffold composed of d,l-lactide, ɛ-caprolactone, 1,6-hexanediol and poly(ortho-esters), in which crosslinkage is achieved by photoinitiators, was developed for bone tissue regeneration. Three different polymer mixtures (pure polymer and 30% bioactive glass or α-tricalcium phosphate added) were tested in a uni-cortical tibial defect model in eight goats. The polymers were randomly applicated in one of four (6.0 mm diameter) defects leaving a fourth defect unfilled. Biocompatibility and bone healing properties were evaluated by serial radiographies, histology and histomorphometry. The pure polymer clearly showed excellent biocompatibility and moderate osteoconductive properties. The addition of α-TCP increased the latter characteristics. This product offers potentials as a carrier for bone healing promoter substances.
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The authors thank Cindy De Baere, Bart De Pauw, Liliana Standaert and Lobke De Bels for technical assistance.
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Vertenten, G., Vlaminck, L., Gorski, T. et al. Evaluation of an injectable, photopolymerizable three-dimensional scaffold based on d,l-lactide and ɛ-caprolactone in a tibial goat model. J Mater Sci: Mater Med 19, 2761–2769 (2008). https://doi.org/10.1007/s10856-008-3404-7
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DOI: https://doi.org/10.1007/s10856-008-3404-7