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Study Findings from University of Massachusetts Provide New Insights into Dentistry (Modification of Ti6Al4V Substrates with Well-defined...

July 2, 2014



Study Findings from University of Massachusetts Provide New Insights into Dentistry (Modification of Ti6Al4V Substrates with Well-defined Zwitterionic Polysulfobetaine Brushes for Improved Surface Mineralization)

By a News Reporter-Staff News Editor at Biotech Week -- Fresh data on Dentistry are presented in a new report. According to news reporting originating in Worcester, Massachusetts, by NewsRx journalists, research stated, "Osteoconductive mineral coatings are beneficial for improving the osteointegration of metallic orthopedic/dental implants, but achieving adequate structural integration between the surface minerals and underlying metallic substrates has been a significant challenge. Here, we report covalent grafting of zwitterionic poly(sulfobetaine methacrylate) (pSBMA) brushes on the Ti6Al4V substrates to promote the surface-mineralization of hydroxyapatite with enhanced surface mineral coverage and mineral-substrate interfacial adhesion."

The news reporters obtained a quote from the research from the University of Massachusetts, "We first optimized the atom transfer radical polymerization (ATRP) conditions for synthesizing pSBMA polymers in solution. Well-controlled pSBMA polymers (relative molecular weight up to 26kD, PDI = 1.17) with high conversions were obtained when the ATRP was carried out in trifluoroethanol/ionic liquid system at 60 degrees C. Applying identical polymerization conditions, surface-initiated atom transfer radical polymerization (SI-ATRP) was carried out to graft zwitterionic pSBMA brushes (PDI < 1.20) from the Ti6Al4V substrates, generating a stable superhydrophilic and low-fouling surface coating without compromising the bulk mechanic property of the Ti6Al4V substrates. The zwitterionic pSBMA surface brushes, capable of attracting both cationic and anionic precursor ions during calcium phosphate apatite mineralization, increased the surface mineral coverage from 32% to 71%, and significantly reinforced the attachment of the apatite crystals on the Ti6Al4V substrate."

According to the news reporters, the research concluded: "This facile approach to surface modification of metallic substrates can be exploited to generate multifunctional polymer coatings and improve the performance of metallic implants in skeletal tissue engineering and orthopedic and dental care."

For more information on this research see: Modification of Ti6Al4V Substrates with Well-defined Zwitterionic Polysulfobetaine Brushes for Improved Surface Mineralization. ACS Applied Materials & Interfaces, 2014;6(10):7141-7152. ACS Applied Materials & Interfaces can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Applied Materials & Interfaces - www.pubs.acs.org/journal/aamick)

Our news correspondents report that additional information may be obtained by contacting P.S. Liu, University of Massachusetts, Sch Med, Dept. of Orthoped & Phys Rehabil, Dept. of Cell & Dev Biol, Worcester, MA 01655, United States. Additional authors for this research include E. Domingue, D.C. Ayers and J. Song (see also Dentistry).

Keywords for this news article include: Tissue Engineering, Worcester, Dentistry, Massachusetts, United States, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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