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

DSpace Repository

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

Show full item record

Files for download

Find Full text There are no files associated with this item.

Facebook

Simple item record

Publication Article, peer reviewed scientific
Title Effect of Si addition on Ca- and P-impregnated implant surfaces with nanometer-scale roughness: an experimental study in dogs
Author(s) Coelho, Paulo G ; Granato, Rodrigo ; Marin, Charles ; Jimbo, Ryo ; Lin, Siyan ; Witek, Lukasz ; Suzuki, Marcel ; Bonfante, Estevam Augusto
Date 2012
English 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.
DOI http://dx.doi.org/10.1111/j.1600-0501.2010.02150.x (link to publisher's fulltext)
Publisher Wiley
Host/Issue Clinical Oral Implants Research;3
Volume 23
ISSN 0905-7161
Pages 373-378
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY
Handle http://hdl.handle.net/2043/14690 (link to this page)

This item appears in the following Collection(s)

Show full item record

Search


Browse

My Account

Statistics