Laser Surface Pattering of Titanium for Improving the Biological Performance of Dental Implants

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Christoph Zwahr - , Professur für Laserbasierte Fertigung, Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)
  • Denise Günther - , Technische Universität Dresden, Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)
  • Tina Brinkmann - , Bego GmbH & Co. KG (Autor:in)
  • Nikolai Gulow - , Bego GmbH & Co. KG (Autor:in)
  • Steffen Oswald - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • Marzellus Grosse Holthaus - , Bego GmbH & Co. KG (Autor:in)
  • Andrés Fabián Lasagni - , Professur für Laserbasierte Fertigung, Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)

Abstract

Direct laser interference patterning (DLIP) is used to produce periodic line-like patterns on titanium surfaces. An Nd:YAG laser operating at 532 nm wavelength with a pulse duration of 8 ns is used for the laser patterning process. The generated periodic patterns with spatial periods of 5, 10, and 20 µm are produced with energy densities between 0.44 and 2.6 J cm - 2 with a single laser pulse. With variation of energy density, different shapes of the arising topography are observed due to the development of the solidification front of the molten material at the maxima positions. Characterization of the surface chemistry shows that the DLIP treatment enhances the content of nitrogen of the titanium reactive layer from 3.9% up to 23.4%. The structural analysis near the titanium surface shows no changes in microstructure after the laser treatment. Contact angles between 65° and 79° are measured on both structured and turned reference surfaces. Cell viability of human osteoblasts on line-like patterned surfaces after 7 d in cultivation medium is 16% higher compared to the grit-blasted and acid-etched references. Finally, the possibility of patterning complex 3D dental implants is shown.

Details

OriginalspracheEnglisch
Aufsatznummer1600858
FachzeitschriftAdvanced healthcare materials
Jahrgang6
Ausgabenummer3
PublikationsstatusVeröffentlicht - Feb. 2017
Peer-Review-StatusJa

Externe IDs

Scopus 85006377263
ORCID /0000-0003-4333-4636/work/196675531

Schlagworte

Schlagwörter

  • Cell Line, Dental Implants, Humans, Lasers, Materials Testing, Osteoblasts/cytology, Surface Properties, Titanium/chemistry