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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 27 (2012), Nr. 2     15. Mär. 2012
Int J Oral Maxillofac Implants 27 (2012), Nr. 2  (15.03.2012)

Seite 369-374, PubMed:22442777, Sprache: Englisch


Bone Responses to Simvastatin-Loaded Porous Implant Surfaces in an Ovariectomized Model
Yang, Guoli / Song, Lina / Guo, Caihong / Zhao, Shifang / Liu, Li / He, Fuming
Purpose: The purpose of this study was to investigate bone responses to simvastatin-loaded porous implant surfaces in an ovariectomized model.
Materials and Methods: Roughened implants were divided into a control group (n = 32), test group 1 (n = 32), and test group 2 (n = 32). Test implants were immersed into 10-7 mol/L (test group 1) or 10-6 mol/L (test group 2) simvastatin solutions for drug adsorption onto implant surfaces. Forty-eight ovariectomized rats randomly received an implant in each tibia. One, 2, 4, and 12 weeks later, the tibiae were retrieved and prepared for histomorphometric evaluation. Bone-to-implant contact and bone area around the implant were determined, and histologic observations were made.
Results: New bone formation on test implant surfaces was seen after 1 week, while it was seen on the control implant surface after 2 weeks. There was more bone tissue and bone-to-implant contact along the test implant surfaces than along the control implant surface. The test group 1 and test group 2 implants showed significantly greater bone area and bone-to-implant contact compared to the control implant at all observed time points (P < .05). No differences were found between the two types of test group implants after 1, 2, 4, and 12 weeks (P > .05).
Conclusion: Simvastatin-loaded porous implant surfaces have the potential to improve implant osseointegration in an ovariectomized rat model.

Schlagwörter: bone area, bone-to-implant contact, dental implant, osseointegration, simvastatin
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