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Effect of the pore structure of bioactive glass balls on biocompatibility in vitro and in vivo

Paper ID Volume ID Publish Year Pages File Format Full-Text
1374 82 2011 10 PDF Available
Title
Effect of the pore structure of bioactive glass balls on biocompatibility in vitro and in vivo
Abstract

We prepared porous bioactive glass (BG) balls with various pore architectures using a modified version of a polymer templating technique which is generally used for the synthesis of mesoporous BG. Sol–gel derived porous BG is an excellent candidate as a graft material for bone tissue regeneration due to its good bone forming bioactivity and biodegradability. The biodegradability is largely related to the pore architecture and affects its biocompatibility. The pore architecture of the BG balls was controllable by changing the reaction time in chloroform. The relationship between the pore architecture of the BG balls and biocompatibility were studied using MC3T3-E1 pre-osteoblast cells in vitro and the rabbit calvarial model in vivo 8 weeks after implantation. The mesoporous BG balls (BG0) and porous BG beads with a hierarchical pore structure on the nano- to microscale (BG0.5 and BG2) showed a good cell proliferation response and differentiation behavior in vitro and in vivo without serious toxicity. These hierarchically porous structures also enhanced osteoconductivity. However, the existence of too many microscale pores in the BG balls (BG24) led to their rapid biodegradation and, consequently, to serious negative effects in vitro and in vivo. The pore architecture of the BG balls greatly influenced their biocompatibility, as well as bone formation, and should be carefully controlled when designing new materials for use in bioapplications. The porous BG balls with hierarchical pores on the nano- to microscale exhibit favorable biocompatibility in vitro and promise excellent potential applications in the field of biomaterials, such as tissue regeneration and drug storage.

Keywords
Bioactive glass; Self-assembly; Pore structure; Biocompatibility; Biodegradation
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Effect of the pore structure of bioactive glass balls on biocompatibility in vitro and in vivo
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 7, Issue 6, June 2011, Pages 2651–2660
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us