Evaluation of Osseointegration of Titanium Alloyed Implants Modified by Plasma Polymerization

International Journal of Molecular Sciences

Carolin Gabler¹  Tobias Lindner¹  Rebecca Göhler¹  Maximilian Haenle¹  Rainer Bader¹  Andreas Fritsche¹  Carmen Zietz¹  Frank Lüthen²  J. Barbara Nebe²  Bernhard Frerich³  Solvig Lenz³  Jürgen Meichsner⁴  Birgit Finke⁵ 

[1] Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, University Medical Center Rostock, Doberaner Straße 142, 18057 Rostock, Germany;Department of Cell Biology, University Medical Center Rostock, Schillingallee 69, 18057 Rostock, Germany;Department of Oral and Maxillofacial Surgery, University Medical Center Rostock,Schillingallee 35, 18057 Rostock, Germany;Institute of Physics, University of Greifswald, Felix-Hausdorff-Str. 6, 17487 Greifswald, Germany;Leibniz Institute for Plasma Science and Technology (INP e.V.) Greifswald, Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany;

关键词: implant coating;    plasma polymerization;    cell adhesion;    animal experiment;    osseointegration;   

DOI  :  10.3390/ijms15022454

来源: DOAJ

【 摘 要 】

By means of plasma polymerization, positively charged, nanometre-thin coatings can be applied to implant surfaces. The aim of the present study was to quantify the adhesion of human bone cells in vitro and to evaluate the bone ongrowth in vivo,on titanium surfaces modified by plasma polymer coatings. Different implant surface configurations were examined: titanium alloy (Ti6Al4V) coated with plasma-polymerized allylamine (PPAAm) and plasma-polymerized ethylenediamine (PPEDA) versus uncoated. Shear stress on human osteoblast-like MG-63 cells was investigated in vitro using a spinning disc device. Furthermore, bone-to-implant contact (BIC) was evaluated in vivo. Custom-made conical titanium implants were inserted at the medial tibia of female Sprague-Dawley rats. After a follow-up of six weeks, the BIC was determined by means of histomorphometry. The quantification of cell adhesion showed a significantly higher shear stress for MG-63 cells on PPAAm and PPEDA compared to uncoated Ti6Al4V. Uncoated titanium alloyed implants showed the lowest BIC (40.4%). Implants with PPAAm coating revealed a clear but not significant increase of the BIC (58.5%) and implants withPPEDA a significantly increased BIC (63.7%). In conclusion, plasma polymer coatings demonstrate enhanced cell adhesion and bone ongrowth compared to uncoatedtitanium surfaces.

【 授权许可】

Unknown