Evaluation of bone tissue reaction in laser beamed implants

The purpose of this study was to evaluate alterations and bone tissue response on laser treated implant surfaces (Nd:YAG – 100W). Sixty grade II titanium (ASTM F67) mini-implants (1.5mm×4.0mm) were installed in femurs of 30 Wistar rats. The animals were divided into two groups: thirty mini-implants...

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Bibliographic Details
Published in:Applied surface science 2014-07, Vol.307, p.503-512
Main Authors: Allegrini, Sergio, Yoshimoto, Marcelo, Salles, Marcos Barbosa, Allegrini, Marcia Rivellino Facci, Pistarini, Luciana Crepaldi Yazawa, Braga, Francisco Jose Correa, Bressiani, Ana Helena de Almeida
Format: Article
Language:English
Subjects:
Animals
Biocompatibility
Bones
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Laser-treated surface
Lasers
Microscopy
Oxygen
Physics
Statistical analysis
Surface roughness
Surgical implants
Three dimensional
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Summary:The purpose of this study was to evaluate alterations and bone tissue response on laser treated implant surfaces (Nd:YAG – 100W). Sixty grade II titanium (ASTM F67) mini-implants (1.5mm×4.0mm) were installed in femurs of 30 Wistar rats. The animals were divided into two groups: thirty mini-implants were machined elements (Machined Group) and the other thirty had laser beamed surfaces (Laser Group). The animals were subdivided into three groups, according to bone healing periods of 15, 30 and 60 days. The samples were analyzed under light, scanning electron and confocal 3D microscopy as well as by EDS (energy dispersive spectroscopy) and Student's t test was used for statistical analyses. Light microscopy results showed new bone trabeculae formation toward laser-treated implants at 15 days’ bone repair as well as thin layers of osteoid matrix, indicating high biocompatibility. Similar features were observed in the Machined Group but only after 30 days. Bone/implant contact was better evidenced on laser-treated surfaces compared to that on simply machined implants. The only group that demonstrated change in level of significance was the laser-treated group at the 15-day-healing period (p
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2014.04.065