scholarly journals Adhesion strength characterization of PVDF/HA coating on cp Ti surface modified by laser beam irradiation

2012 ◽  
Vol 258 (24) ◽  
pp. 10110-10114 ◽  
Author(s):  
A.A. Ribeiro ◽  
L.G. Vaz ◽  
A.C. Guastaldi ◽  
J.S.C. Campos
Keyword(s):  
Laser Beam ◽  
Adhesion Strength ◽  
Beam Irradiation ◽  
Ha Coating ◽  
Laser Beam Irradiation ◽  
Strength Characterization ◽  
Surface Modified ◽  
Cp Ti

scholarly journals Behavior of rat bone marrow stem cells on titanium surfaces modified by laser-beam and deposition of calcium phosphate

2021 ◽  
Vol 32 (6) ◽  
Author(s):  
F. Florian ◽  
F. P. S. Guastaldi ◽  
M. A. Cominotte ◽  
L. C. Pires ◽  
A. C. Guastaldi ◽  
...  
Keyword(s):  
Gene Expression ◽  
Stem Cells ◽  
Bone Marrow ◽  
Calcium Phosphate ◽  
Laser Beam ◽  
Laser Irradiation ◽  
Beam Irradiation ◽  
Laser Beam Irradiation ◽  
Surface Modified ◽  
Rat Bone

Abstract Objectives The aim of this study was to evaluate the behavior of rat bone marrow stem cells seeded on a Ti-15Mo alloy surface modified by laser-beam irradiation followed by calcium phosphate deposition. Materials and methods A total of four groups were evaluated: polished commercially pure titanium (cpTi): Ti-P; laser irradiation + calcium phosphate deposition on cpTi: Ti-LCP; polished Ti-15Mo alloy: Ti15Mo-P; and laser irradiation + calcium phosphate deposition on Ti-15Mo alloy: Ti15Mo-LCP. Before and after laser irradiation and calcium phosphate deposition on the surfaces, physicochemical and morphological analyses were performed: Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDX). The wettability of the samples was evaluated by contact angle measurement. In addition, the behavior of osteoblast-like cells to these surfaces was evaluated for cell morphology, adhesion, proliferation and viability, evaluation of alkaline phosphatase formation and gene expression of osteogenesis markers. Results Surfaces wet-abrade with grit paper (P) showed oriented groves, while the laser irradiation and calcium phosphate deposition (LCP) produced porosity on both cpTi and Ti15Mo alloy groups with deposits of hydroxyapatite (HA) crystals (SEM). EDX showed no contamination after surface modification in both metal samples. A complete wetting was observed for both LCP groups, whereas P surfaces exhibited high degree of hydrophobicity. There was a statistical difference in the intragroup comparison of proliferation and viability (p < 0.05). The ALP activity showed higher values in the Ti15Mo alloy at 10 days of culture. The gene expression of bone related molecules did not present significant differences at 7 and 14 days among different metals and surface treatments. Conclusion Ti15-Mo seems to be an alternative alloy to cpTi for dental implants. Surface treatment by laser irradiation followed by phosphate deposition seems to positively interact with bone cells. Clinical relevance Ti-15Mo alloy surface modified by laser-beam irradiation followed by calcium phosphate deposition may improve and accelerate the osseointegration process of dental implants.

Physicochemical, morphological, and biological analyses of Ti-15Mo alloy surface modified by laser beam irradiation

2018 ◽  
Vol 34 (3) ◽  
pp. 537-546 ◽  
Author(s):  
Luana C. Pires ◽  
Fernando P. S. Guastaldi ◽  
Andressa V. B. Nogueira ◽  
Nilson T. C. Oliveira ◽  
Antonio C. Guastaldi ◽  
...  
Keyword(s):  
Laser Beam ◽  
Alloy Surface ◽  
Beam Irradiation ◽  
Laser Beam Irradiation ◽  
Surface Modified

scholarly journals Effects of ultraviolet laser beam irradiation on rabbit cornea and lens.

Sangyo Igaku ◽  
1988 ◽  
Vol 30 (2) ◽  
pp. 112-120 ◽  
Author(s):  
Sadafumi TAKISE ◽  
Shun'ichi HORIGUCHI ◽  
Ichiro KARAI ◽  
Shinya MATSUMURA ◽  
Makoto HARIMA ◽  
...  
Keyword(s):  
Laser Beam ◽  
Beam Irradiation ◽  
Rabbit Cornea ◽  
Ultraviolet Laser ◽  
Laser Beam Irradiation

scholarly journals Active Shock-tube-diaphragm Rupture with Laser Beam Irradiation

2004 ◽  
Author(s):  
Toru Takahashi ◽  
Keiko Watanabe ◽  
Akihiro Sasoh ◽  
Hiroyuki Torikai ◽  
Qian-Suo Yang
Keyword(s):  
Laser Beam ◽  
Shock Tube ◽  
Beam Irradiation ◽  
Diaphragm Rupture ◽  
Laser Beam Irradiation

scholarly journals Fundamental plasma diagnostic study for guiding TIG arc phenomenon by laser beam irradiation

2020 ◽  
Vol 38 (2) ◽  
pp. 60-67
Author(s):  
Hiroyuki OKUDA ◽  
Kazufumi NOMURA ◽  
Satoru ASAI ◽  
Shohei IWATA ◽  
Yasushi KITANI ◽  
...  
Keyword(s):  
Laser Beam ◽  
Diagnostic Study ◽  
Plasma Diagnostic ◽  
Beam Irradiation ◽  
Laser Beam Irradiation

Analysis of the Thermal Distribution by Using Laser-Beam Irradiation

2007 ◽  
Vol 51 (2) ◽  
pp. 503-508 ◽  
Author(s):  
Youngseop Kim ◽  
Eun Seo Choi ◽  
Wooseop Kwak ◽  
Yongjin Shin
Keyword(s):  
Laser Beam ◽  
Beam Irradiation ◽  
Thermal Distribution ◽  
Laser Beam Irradiation

Examination of tooth pulp following laser beam irradiation

1987 ◽  
Vol 7 (3) ◽  
pp. 236-239 ◽  
Author(s):  
Leslie Serebro ◽  
Trevor Segal ◽  
Daniel Nordenberg ◽  
Colin Gorfil ◽  
Moshe Bar-Lev
Keyword(s):  
Laser Beam ◽  
Tooth Pulp ◽  
Beam Irradiation ◽  
Laser Beam Irradiation

Two-dimensional energy transfer and plasma formation under laser beam irradiation of a subcritical-density material

2000 ◽  
Vol 30 (7) ◽  
pp. 601-605 ◽  
Author(s):  
Sergei Yu Gus'kov ◽  
N V Zmitrenko ◽  
I V Popov ◽  
Vladislav B Rozanov ◽  
V F Tishkin
Keyword(s):  
Energy Transfer ◽  
Laser Beam ◽  
Plasma Formation ◽  
Two Dimensional ◽  
Beam Irradiation ◽  
Laser Beam Irradiation
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