PURPOSE: This study was undertaken to evaluate ion beam-assisted deposition (IBAD) of hydroxyapatite (HA) on the grit-blasted surface of endosseous dental implants 6 weeks postplacement. MATERIALS AND METHODS: A total of 40 implants was placed in the tibiae of 10 New Zealand white rabbits. Twenty implants were grit-blasted only and the other 20 were grit-blasted and coated with HA by the IBAD method. After 6 weeks of healing, the rabbits were sacrificed and removal torque tests, histomorphometry, and morphometric analysis of microtomographic images were performed. RESULTS: The HA-coated group showed significantly higher removal torque, bone-to-implant contact, and bone volume than the other group. DISCUSSION AND CONCLUSION: In a previous study, the authors suggested that HA coating deposited on a machined surface by the IBAD method showed results comparable to or more favorable than the results obtained with a blasted surface. This study indicated that the HA coating produced by the IBAD method was also very effective on the aluminum oxide-blasted surface, as demonstrated by the early formation of osseointegration. Morphometric analysis by microtomography showed some promise in measuring the osseointegration rate. (More than 50 references.)
PURPOSE: This study was undertaken to evaluate ion beam-assisted deposition (IBAD) of hydroxyapatite (HA) on the grit-blasted surface of endosseous dental implants 6 weeks postplacement. MATERIALS AND METHODS: A total of 40 implants was placed in the tibiae of 10 New Zealand white rabbits. Twenty implants were grit-blasted only and the other 20 were grit-blasted and coated with HA by the IBAD method. After 6 weeks of healing, the rabbits were sacrificed and removal torque tests, histomorphometry, and morphometric analysis of microtomographic images were performed. RESULTS: The HA-coated group showed significantly higher removal torque, bone-to-implant contact, and bone volume than the other group. DISCUSSION AND CONCLUSION: In a previous study, the authors suggested that HA coating deposited on a machined surface by the IBAD method showed results comparable to or more favorable than the results obtained with a blasted surface. This study indicated that the HA coating produced by the IBAD method was also very effective on the aluminum oxide-blasted surface, as demonstrated by the early formation of osseointegration. Morphometric analysis by microtomography showed some promise in measuring the osseointegration rate. (More than 50 references.)
Authors: Y Hashimoto; M Kawashima; R Hatanaka; M Kusunoki; H Nishikawa; S Hontsu; M Nakamura Journal: J Mater Sci Mater Med Date: 2007-07 Impact factor: 3.896
Authors: Y Hashimoto; M Kawashima; R Hatanaka; M Kusunoki; H Nishikawa; S Hontsu; M Nakamura Journal: J Mater Sci Mater Med Date: 2007-06-28 Impact factor: 3.896
Authors: Jeanne-Marie Damerau; Susanne Bierbaum; Daniel Wiedemeier; Paula Korn; Ralf Smeets; Gregor Jenny; Johanna Nadalini; Bernd Stadlinger Journal: J Biomed Mater Res B Appl Biomater Date: 2021-07-16 Impact factor: 3.405