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Production of osseointegrating (bone bonding) surfaces on titanium screws by laser melt disruption

Journal article
Authors R. Olsson
J. Powell
Anders Palmquist
Rickard Brånemark
J. Frostevarg
A. F. H. Kaplan
Published in Journal of Laser Applications
Volume 30
Issue 4
ISSN 1042-346X
Publication year 2018
Published at Institute of Clinical Sciences, Department of Biomaterials
Language en
Links dx.doi.org/10.2351/1.5078502
Keywords dental implants, high speed imaging, laser surface structuring, medical implants, osseointegration, titanium, Bonding, Bone, Chemical bonds, Dental prostheses, Energy dispersive spectroscopy, Medical imaging, Metal implants, Neodymium lasers, Scanning electron microscopy, Screws, Surface structure, Yttrium aluminum garnet, Chemical roughening, Clinical experience, Energy dispersive X ray spectroscopy, Laser surface, Nano-scale surfaces, Pulsed lasers
Subject categories Biomaterials Science

Abstract

Several techniques can be used to modify implant surfaces in order to accelerate bone growth around titanium implants. One method is to generate a surface structure which stimulates bone growth and remodeling. This paper describes and explains a nonablative method for producing osseointegrating (structural and functional bone bonding) surfaces on titanium implants using laser processing. The focus is especially on surface texturing of dental implant screws, where the ability of a Nd:YAG laser to generate "splashy" surfaces covered in resolidified microscale droplets coated with nanoscale surface oxides is assessed. The surfaces produced were analyzed by a scanning electron microscope and energy dispersive x-ray spectroscopy. It is concluded that laser processing using Q-pulsed Nd:YAG lasers can generate surfaces which match the demands set by clinical experience. One important characteristic of the surfaces discussed here is that they involve overhanging features which are suitable for trapping red blood cells and which cannot be created by mechanical or chemical roughening techniques. © 2018 Laser Institute of America.

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