Surface treatment of screw shaped titanium dental implants by high intensity laser pulses

Machined and Al 2O 3 blasted surfaces of screw shaped Ti dental implants were irradiated by 30 ns pulses of Nd:glass laser at 1064 nm wavelength with 0.5–3 J pulse energy. The laser treatment increased the temperature of the Ti surface well above the melting temperature. The resulting ablation of so...

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Bibliographic Details
Published in:Applied surface science 2002-01, Vol.186 (1), p.7-13
Main Authors: Pető, G., Karacs, A., Pászti, Z., Guczi, L., Divinyi, T., Joób, A.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Dental implants
Exact sciences and technology
Laser ablation
Laser pulses
Laser surface treatment
Materials science
Melting
Osseointegration
Physics
Rapid solidification
Surface structure
Surface treatment
Surface treatments
Thermal effects
Titanium
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Summary:Machined and Al 2O 3 blasted surfaces of screw shaped Ti dental implants were irradiated by 30 ns pulses of Nd:glass laser at 1064 nm wavelength with 0.5–3 J pulse energy. The laser treatment increased the temperature of the Ti surface well above the melting temperature. The resulting ablation of some surface layers was followed by a very rapid solidification. These thermal processes strongly modified the original morphology of the surface and removed the contaminations. The new morphology was characterized by features mostly in ten micron and partly in submicron ranges. The surface composition was the same as the bulk titanium without any segregation. Animal experiments demonstrated that this surface treatment seems to be promising for the improvement of the osseointegration of dental implants.
ISSN:0169-4332
1873-5584
DOI:10.1016/S0169-4332(01)00769-3