Minimally invasive mandibular bone augmentation using injectable hydrogels
2012 (English)In: Journal of Tissue Engineering and Regenerative Medicine, ISSN 1932-6254, Vol. 6, no S3, s15-s23 p.Article in journal (Refereed) Published
Hyaluronic acid-based hydrogels are proven biocompatible materials and excellent carriers of bone morphogenetic protein-2 (BMP-2) that have been successfully tested for bone generation in vivo. Different formulations, with or without nanohydroxyapatite, have shown promise for craniofacial applications. In this study, 28 rats were used to investigate whether it is possible to achieve mandibular bone augmentation upon injection of novel hyaluronic acid-based hydrogels containing nanohydroxyapatite and different concentrations of BMP-2 (0, 5 and 150ÎŒg/ml). The biomaterials were injected subperiosteally through fine needles into the innate mandibular diastema, imitating a clinical procedure for resorbed mandibles. No incisions, flaps or sutures were necessary. After 8weeks the mandibles were evaluated by peripheral quantitative computed tomography (pQCT), micro-computed tomography (ÎŒCT), histology, immunohistochemistry and fluorochrome labelling. As a result, engineered bone was observed in all treated mandibles, with a statistically significant increase in mandibular bone volume correlated with the amount of BMP-2 loaded in the hydrogel formula. We therefore demonstrated that minimally invasive mandibular bone augmentation is possible upon injection in rats, when using the appropriate injectable scaffolds. This represents an attractive clinical alternative for oral implantology patients.
Place, publisher, year, edition, pages
2012. Vol. 6, no S3, s15-s23 p.
Bone morphogenetic protein-2, Bone tissue engineering, Hyaluronic acid, Hydroxyapatite, Injectable hydrogel, Mandible, Minimally invasive, Rat animal model
Natural Sciences Polymer Chemistry
Research subject Chemistry with specialization in Polymer Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-181021DOI: 10.1002/term.1593ISI: 000313431100003OAI: oai:DiVA.org:uu-181021DiVA: diva2:552690
Correspondence Address: Hilborn, J.; Polymer Chemistry, Department of Chemistry - Å
ngström Laboratory, Science for Life Laboratory email: firstname.lastname@example.orgBibliographically approved