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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 Marcelo,
Bonfante Estevam A.
Publication year - 2012
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/j.1600-0501.2010.02150.x
Subject(s) - materials science , implant , nanometre , osseointegration , surface roughness , x ray photoelectron spectroscopy , biomedical engineering , scanning electron microscope , surface finish , composite material , medicine , surgery , physics , nuclear magnetic resonance
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.To cite this article:
Coelho PG, Granato R, Marin C, Jimbo R, Lin S, Witek L, Suzuki M, Bonfante EA. Effect of Si addition on Ca‐ and P‐impregnated implant surfaces with nanometer‐scale roughness: an experimental study in dogs. Clin. Oral Impl. Res . 23 , 2012; 373–378.
doi: 10.1111/j.1600‐0501.2010.02150.x