Micropillar fabrication on bovine cortical bone by direct write femtosecond laser ablation

2010 ◽  
Author(s):  
Y. C. Lim ◽  
K. Altman ◽  
D. F. Farson ◽  
K. M. Flores
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Cortical Bone ◽  
Femtosecond Laser Ablation ◽  
Direct Write

Micropillar fabrication on bovine cortical bone by direct-write femtosecond laser ablation

2009 ◽  
Vol 14 (6) ◽  
pp. 064021 ◽  
Author(s):  
Yong C. Lim ◽  
Katrina J. Altman ◽  
Dave F. Farson ◽  
Katharine M. Flores
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Cortical Bone ◽  
Femtosecond Laser Ablation ◽  
Direct Write

Femtosecond laser ablation of bovine cortical bone

2012 ◽  
Vol 17 (12) ◽  
pp. 125005 ◽  
Author(s):  
Liliana T. Cangueiro ◽  
Rui Vilar ◽  
Ana M. Botelho do Rego ◽  
Vania S. F. Muralha
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Cortical Bone ◽  
Femtosecond Laser Ablation

scholarly journals Effects of Drilling Technology on Mini-Implant Primary Stability: A Comparison of the Mechanical Drilling and Femtosecond Laser Ablation

2021 ◽  
Vol 9 ◽  
Author(s):  
Wenbin Zhang ◽  
Fahad Alghannam ◽  
Yingchao Zhu ◽  
Jianfei Zhang ◽  
Gregory R Wohl ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Cortical Bone ◽  
Primary Stability ◽  
Femtosecond Laser Ablation ◽  
Site Preparation ◽  
Pull Out ◽  
Subgroup Ii ◽  
Drilling Technology ◽  
Pull Out Strength

Objectives: Primary stability is a fundamental prerequisite in predicting the prognosis of a mini-implant (MI) as a skeletal anchorage. This study aims to evaluate the influence of implant site preparation technology on the primary stability of MI.Methods: A total of 108 bovine cortical bone samples were fabricated to three thicknesses (0.5, 1.0, and 1.5 mm). For each thickness group, the samples were divided into three subgroups: I (without site preparation), II (site preparation with a mechanical drill), and III (site preparation with femtosecond laser ablation). After MI insertion into these samples, the pull out strength of MI was measured by lateral pull out tests.Results: For the 0.5 mm thickness samples, the lateral pull-out strength was 9.9±2.7 N in subgroup I, 6.7±2.1 N in subgroup II, and 15.2±2.6 N in subgroup III. For the 1.0 mm thickness samples, the lateral pull-out strength was 39.3±2.5N in subgroup I, 38.2±2.7N in subgroup II, and 46.3±1.7 N in subgroup III. For the 1.5 mm thickness samples, the lateral pull-out strength was 73.9±4.8 N in subgroup I, 70.1±2.8 N in subgroup II, 75.0±2.2 N in subgroup III. No signs of carbonization or substantial cracking were visible in any of the bone samples.Conclusion: Site preparation with laser ablation significantly improved the lateral pull-out strength over mechanical preparation and control (no site preparation) in thinner cortical bone samples (1.0 and 0.5 mm). Such improvement in lateral pull-out strength decreases as the samples become thicker and diminishes in thick (1.5 mm) cortical bone samples.

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