Effect of simulated CO2and GaAlAs laser surface decontamination on temperature changes in Ti-plasma sprayed dental implants

2002 ◽  
Vol 30 (3) ◽  
pp. 233-239 ◽  
Author(s):  
Matthias Kreisler ◽  
Haitham Al Haj ◽  
Hermann Götz ◽  
Heinz Duschner ◽  
Bernd d'Hoedt
Keyword(s):  
Dental Implants ◽  
Laser Surface ◽  
Temperature Changes ◽  
Surface Decontamination ◽  
Plasma Sprayed

scholarly journals Mineralization of Titanium Surfaces: Biomimetic Implants

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2879
Author(s):  
Javier Gil ◽  
Jose Maria Manero ◽  
Elisa Ruperez ◽  
Eugenio Velasco-Ortega ◽  
Alvaro Jiménez-Guerra ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Dental Implants ◽  
Early Stage ◽  
Calcium Phosphates ◽  
Biological Fixation ◽  
Biomimetic Surfaces ◽  
Titanium Surfaces ◽  
Deposition Processes ◽  
Fast Dissolution ◽  
Plasma Sprayed

The surface modification by the formation of apatitic compounds, such as hydroxyapatite, improves biological fixation implants at an early stage after implantation. The structure, which is identical to mineral content of human bone, has the potential to be osteoinductive and/or osteoconductive materials. These calcium phosphates provoke the action of the cell signals that interact with the surface after implantation in order to quickly regenerate bone in contact with dental implants with mineral coating. A new generation of calcium phosphate coatings applied on the titanium surfaces of dental implants using laser, plasma-sprayed, laser-ablation, or electrochemical deposition processes produces that response. However, these modifications produce failures and bad responses in long-term behavior. Calcium phosphates films result in heterogeneous degradation due to the lack of crystallinity of the phosphates with a fast dissolution; conversely, the film presents cracks, which produce fractures in the coating. New thermochemical treatments have been developed to obtain biomimetic surfaces with calcium phosphate compounds that overcome the aforementioned problems. Among them, the chemical modification using biomineralization treatments has been extended to other materials, including composites, bioceramics, biopolymers, peptides, organic molecules, and other metallic materials, showing the potential for growing a calcium phosphate layer under biomimetic conditions.

A Process Model for Laser Surface Treatment of Plasma Sprayed Coatings

2004 ◽  
Author(s):  
J. Wu ◽  
J. Choi ◽  
S. Zhang ◽  
G. Hilmas
Keyword(s):  
Surface Roughness ◽  
Surface Treatment ◽  
Process Model ◽  
Laser Surface ◽  
Treatment Technique ◽  
Beam Diameter ◽  
Laser Surface Treatment ◽  
Coating Quality ◽  
Porosity Level ◽  
Plasma Sprayed

Advanced ceramics are not easily fabricated and consolidated by the plasma spray technique because of their extremely high melting temperature. Zirconium diboride (ZrB2) has been successfully plasma sprayed, but the coatings are quite porous. The high levels of porosity are usually a result of unmelted ZrB2 particles that have been incorporated into the coating during deposition. Applying a laser surface treatment to reduce both the porosity and the coating surface roughness, and to improve the coating quality, is of great interest. A laser based surface treatment technique provides a well-controlled heat input, with minimal or no distortion. In this study, a two dimensional mathematical model is developed to investigate the effects of laser power, beam diameter and level of porosity on the coating quality, incorporating melting, solidification, and evaporation phenomena. A continuum model is used to solve Navier-Stokes equations for both solid and liquid phases. Volume-of-Fluid (VOF) is incorporated to track the free surface. The surface force is incorporated as a body force instead of a boundary condition. The porosity level and surface roughness before and after the laser surface treatment are simulated and compared with experimental results.

scholarly journals Wettability Characteristics of Laser Surface Textured Plasma Sprayed TiO2/ZnO Coatings

2019 ◽  
Vol 14 (5) ◽  
pp. 279-284
Author(s):  
Yusliza Yusuf ◽  
Mariyam Jameelah Ghazali ◽  
Yuichi Otsuka ◽  
Sarita Morakul ◽  
Susumu Nakamura ◽  
...  
Keyword(s):  
Laser Surface ◽  
Plasma Sprayed

scholarly journals Laser surface treatment of plasma-sprayed yttria-stabilized zirconia coatings

2005 ◽  
Vol 41 (Extra) ◽  
pp. 154-159 ◽  
Author(s):  
M. A. Pinto ◽  
W. R. Osório ◽  
C. R. P. ◽  
A. García ◽  
M. C. F. Ierardi
Keyword(s):  
Surface Treatment ◽  
Laser Surface ◽  
Yttria Stabilized Zirconia ◽  
Laser Surface Treatment ◽  
Stabilized Zirconia ◽  
Plasma Sprayed

scholarly journals Laser surface patterning to enhance adhesion of plasma sprayed coatings

2015 ◽  
Vol 278 ◽  
pp. 171-182 ◽  
Author(s):  
R. Kromer ◽  
S. Costil ◽  
J. Cormier ◽  
D. Courapied ◽  
L. Berthe ◽  
...  
Keyword(s):  
Surface Patterning ◽  
Laser Surface ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

CO2 laser surface treatment of failed dental implants for re-implantation: an animal study

2016 ◽  
Vol 31 (5) ◽  
pp. 985-989
Author(s):  
Shahin Kasraei ◽  
Parviz Torkzaban ◽  
Bahar Shams ◽  
Seyed Mohammad Hosseinipanah ◽  
Maryam Farhadian
Keyword(s):  
Surface Treatment ◽  
Dental Implants ◽  
Animal Study ◽  
Co2 Laser ◽  
Laser Surface ◽  
Laser Surface Treatment
Sign in / Sign up

Export Citation Format

Share Document