Effect of Si addition on Ca- and P-impregnated implant surfaces with nanometer-scale roughness: an experimental study in dogs

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Effect of Si addition on Ca- and P-impregnated implant surfaces with nanometer-scale roughness: an experimental study in dogs

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dc.contributor.author Coelho, Paulo G
dc.contributor.author Granato, Rodrigo
dc.contributor.author Marin, Charles
dc.contributor.author Jimbo, Ryo
dc.contributor.author Lin, Siyan
dc.contributor.author Witek, Lukasz
dc.contributor.author Suzuki, Marcel
dc.contributor.author Bonfante, Estevam Augusto
dc.date.accessioned 2012-12-21T08:10:36Z
dc.date.available 2012-12-21T08:10:36Z
dc.date.issued 2012 en_US
dc.identifier.issn 0905-7161 en_US
dc.identifier.uri http://hdl.handle.net/2043/14690
dc.description.abstract OBJECTIVES: To investigate the effect of Si addition on a nanometer-scale roughness Ca and P implant surfaces in a canine tibia model by biomechanical and histomorphometric evaluations. MATERIAL AND METHODS: The implant surfaces comprised a resorbable media CaP microblasted (control) and a CaP resorbable media+silica-boost microblasted (experimental) surfaces. Surfaces were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and optical interferometry (IFM) down to the nanometric level. The animal model involved the bilateral placement of control (n=24) and experimental surface (n=24) implants along the proximal tibiae of six dogs, remaining in vivo for 2 or 4 weeks. After euthanization, half of the specimens were torqued-to-interface failure, and the other half was subjected to histomorphologic and bone-to-implant contact (BIC) evaluation. Torque and BIC statistical evaluation was performed by the Friedman test at 95% level of significance, and comparisons between groups was performed by the Dunn test. RESULTS: IFM and SEM observations depicted comparable roughness parameters for both implant surfaces on the micrometer and nanometer scales. XPS analysis revealed similar chemical composition, except for the addition of Si on the experimental group. Torque-to-interface failure and BIC mean values showed no significant differences (P=0.25 and 0.51, respectively) at both 2- and 4-week evaluation points for experimental and control groups. Early bone healing histomorphologic events were similar between groups. CONCLUSIONS: The experimental surface resulted in not significantly different biomechanical fixation and BIC relative to control. Both surfaces were biocompatible and osseoconductive. en_US
dc.format.extent 6
dc.language.iso eng en_US
dc.publisher Wiley en_US
dc.subject.classification Medicine en_US
dc.title Effect of Si addition on Ca- and P-impregnated implant surfaces with nanometer-scale roughness: an experimental study in dogs en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Odontology
dc.identifier.doi 10.1111/j.1600-0501.2010.02150.x en_US
dc.subject.srsc Research Subject Categories::ODONTOLOGY en_US
dc.relation.ispartofpublication Clinical Oral Implants Research;3
dc.relation.ispartofpublicationvolume 23 en_US
dc.format.ePage 378
dc.format.sPage 373
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