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  • Title: Osseointegration of titanium implants with a roughened surface containing hydride ion in a rabbit model.
    Author: Cheng Z, Zhang F, He F, Zhang L, Guo C, Zhao S, Yang G.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2010 Jul; 110(1):e5-12. PubMed ID: 20610295.
    Abstract:
    OBJECTIVE: The objective of this study was to investigate the effect of hydride ion on bone formation and bone-bonding strength at the early stage of implantation. STUDY DESIGN: Implants and plates were treated in 2 ways: test implant (implant surface with hydride ion) and control implant (implant surface without hydride ion). Crystal structure of plate surfaces was analyzed by low angle x-ray diffractometry (XRD). Sixty implants (30 test implants and 30 control implants) were inserted into tibias of 10 rabbits. At 2 and 8 weeks postimplantation, tibias were retrieved and prepared for removal torque tests (RTQ) and histomorphometric evaluation, respectively. RESULTS: TiH(2) diffractions appeared on the XRD pattern of the test surface whereas TiH(2) did not appear on the control surface. The test implants showed 51.28% and 64.63% greater RTQ values than did the control implants at 2 and 8 weeks (P = .010, .011, respectively). Histomorphometric evaluation demonstrated the test implants significantly increased bone-implant contact and peri-implant bone formation at 2 and 8 weeks. CONCLUSION: These results suggest the presence of hydride ion in the implant surface may improve bone integration with implant surfaces at the early stage of implantation.
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