An in vivo study on the effect of coating stability on osteointegration performance of collagen/hyaluronic acid multilayer modified titanium implants.
Bioact Mater 2017;
3:97-101. [PMID:
29744446 PMCID:
PMC5935658 DOI:
10.1016/j.bioactmat.2017.07.004]
[Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/20/2017] [Accepted: 07/21/2017] [Indexed: 11/25/2022] Open
Abstract
Aseptic loosening of implant is one of the main causes of Ti-based implant failure. In our previous work, a novel stable collagen/hyaluronic acid (Col/HA) multilayer modified titanium coatings (TCs) was developed by layer-by-layer (LBL) covalent immobilization technique, which showed enhanced biological properties compared with TCs that were physically absorbed with Col/HA multilayer in vitro. In this study, a rabbit model with femur condyle defect was employed to compare the osteointegration performance of them. Results indicated that Col/HA multilayer with favourable stability could better facilitate osteogenesis around implants and bone-implant contact. The Col/HA multilayer covalent-immobilized TC may reduce aseptic loosening of implant.
Stability of Col/HA multilayer could promote the growth of trabecular bone around implants.
New bone was induced to grow into the hole of Col/HA multilayer covalently immobilized TC implants.
New bone contacted with Col/HA multilayer covalently immobilized TC implants closely.
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