In vitro bioactivity of laser surface-treated Ti6Al4V alloy
| Autor: | Harika Ekşioğlu Yıldız, Ergün Keleşoğlu, Afife Binnaz Hazar Yoruç |
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| Rok vydání: | 2019 |
| Předmět: |
Titanium
Materials science Surface Properties Precipitation (chemistry) Simulated body fluid Analytical chemistry Spectrometry X-Ray Emission Titanium alloy Biocompatible Materials Lasers Solid-State 030206 dentistry Dermatology Surface finish Laser law.invention 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine law Alloys Surface roughness Computer Simulation Surgery Lasing threshold Er:YAG laser |
| Zdroj: | Lasers in Medical Science. 34:1567-1573 |
| ISSN: | 1435-604X 0268-8921 |
| DOI: | 10.1007/s10103-019-02746-z |
| Popis: | The effects of lasing parameters on the precipitation of hydroxyapatite (HA) on the commercial Ti6Al4V alloy in simulated body fluid (SBF) were investigated. Ti6Al4V plates were polished and ultrasonically cleaned in acetone and ethyl alcohol, respectively. The specimen surfaces were treated with Er:YAG laser using super short pulse (SSP, 50 μs) and very short pulse (VSP, 100 μs) modes. Surface roughness was measured before and after laser treatment. The specimens were immersed in simulated body fluid (SBF) for 1, 3, and 7 days and, then the amount of Ca and P precipitation on specimens was determined using SEM/EDS analysis. An average roughness varying between 0.19 and 0.81 μm in surface roughness was detected in all laser-treated specimens depending on the lasing parameters. The highest surface roughness and Ca precipitation were found in VSP group (20 Hz and 5 W). Laser treatment of specimen surfaces has dramatically increased the HA precipitation due to the increasing surface roughness. It is also concluded that the immersion time was effective on the HA precipitation as well. |
| Databáze: | OpenAIRE |
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