Abstract
In the present study, the bone response of titanium implants at early bone healing stages, was evaluated using a tensile test. Test surface of coin-shaped cp. titanium implants were standardized by grit blasting with TiO2, grain size 180–220 μm. The surface topography of the implant specimens was examined by SEM, and by a confocal laser scanner for evaluation of S a, S t and S dr. The implants were placed onto the leveled site on the tibia of 12 New Zealand White rabbits, 4 implants in each animal. The rabbits were divided into three groups with different observation times i.e. 2, 4 and 6 weeks. The retention of 12 implants were tested by measuring the pull-out force needed to detach the implant from the bone. There was a significant increase in implant retention from 2 to 4 and to 6 weeks healing time (p<0.05). Four implants from each time point were randomly chosen for histological evaluation. The histological appearance of the implant–bone interface at the different healing times showed noticeable differences in the degree of bone healing and maturation, suggesting that, in rabbits, 6 weeks healing time is a suitable observation point for tensile testing of surface optimized osseointegrating implants.
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Rønold, H.J., Ellingsen, J.E. & Lyngstadaas, S.P. Tensile force testing of optimized coin-shaped titanium implant attachment kinetics in the rabbit tibiae. Journal of Materials Science: Materials in Medicine 14, 843–849 (2003). https://doi.org/10.1023/A:1025622407727
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DOI: https://doi.org/10.1023/A:1025622407727