Evaluation of an injectable bioactive borate glass cement to heal bone defects in a rabbit femoral condyle model
- PMID: 28183648
- DOI: 10.1016/j.msec.2016.12.101
Evaluation of an injectable bioactive borate glass cement to heal bone defects in a rabbit femoral condyle model
Abstract
There is a need for synthetic biomaterials to heal bone defects using minimal invasive surgery. In the present study, an injectable cement composed of bioactive borate glass particles and a chitosan bonding solution was developed and evaluated for its capacity to heal bone defects in a rabbit femoral condyle model. The injectability and setting time of the cement in vitro decreased but the compressive strength increased (8±2MPa to 31±2MPa) as the ratio of glass particles to chitosan solution increased (from 1.0gml-1 to 2.5gml-1). Upon immersing the cement in phosphate-buffered saline, the glass particles reacted and converted to hydroxyapatite, imparting bioactivity to the cement. Osteoblastic MC3T3-E1 cells showed enhanced proliferation and alkaline phosphatase activity when incubated in media containing the soluble ionic product of the cement. The bioactive glass cement showed a better capacity to stimulate bone formation in rabbit femoral condyle defects at 12weeks postimplantation when compared to a commercial calcium sulfate cement. The injectable bioactive borate glass cement developed in this study could provide a promising biomaterial to heal bone defects by minimal invasive surgery.
Keywords: Bioactive borate glass; Bone cement; Bone repair; Injectable bioactive glass cement; Rabbit femoral condyle model.
Copyright © 2016 Elsevier B.V. All rights reserved.
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