Minimally invasive mandibular bone augmentation using injectable hydrogels.
J Tissue Eng Regen Med
; 6 Suppl 3: s15-23, 2012 Dec.
Article
in En
| MEDLINE
| ID: mdl-22941759
ABSTRACT
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 150 µg/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 8 weeks the mandibles were evaluated by peripheral quantitative computed tomography (pQCT), micro-computed tomography (µCT), 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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bone Substitutes
/
Hydrogels
/
Mandible
Limits:
Animals
Language:
En
Journal:
J Tissue Eng Regen Med
Journal subject:
BIOTECNOLOGIA
/
HISTOLOGIA
Year:
2012
Document type:
Article
Affiliation country:
España
Publication country:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
/
UNITED KINGDOM