Aivazi, Moluk, Fathi, Mohammad, Nejatidanesh, Farahnaz, Mortazavi, Vajihesadat, HashemiBeni, Batoul, Matinlinna, Jukka Pekka, and Savabi, Omid
Lasers in Medical Science. Dec 2016, Vol. 31 Issue 9, p1837, 7 p.
Crystals -- Structure, Rare earth metals, Implant dentures, Aluminum oxide, Biological products, X-ray spectroscopy, Zirconium oxide, Medical colleges, and Zirconium
Ceramic dental materials, especially alumina (20 %vol)-yttrium stabilized tetragonal zirconia poly crystal (A-Y-TZP20), have been considered as alternatives to metals for endosseous dental implant application. For increasing the bone-to-implant contact as well as the speed of bone formation, a new surface modification can be effective. The aim of this study was to design microgroove patterns by femtosecond laser on A-Y-TZP20 nano-composite disks for endosseous dental implant application. The phase composition and the morphology of the A-Y-TZP20 nano-composite samples were characterized using X-ray diffraction and Scanning electron microscopy equipped with energy dispersive X-ray spectroscopy techniques. Statistical analysis was submitted to Kolmogorov-Smirnov test and Student's t test for independent variables, with a 5 % significance level. EDAX analysis revealed a significant decrease in the relative content of contaminants like carbon (p<0.05) in laser surface-treated group as compared to non surface-treated group. X-ray diffraction did not show any change in the crystalline structure induced by laser processing. It was concluded that the femtosecond laser is a clean and safe method for surface modification of A-Y-TZP20.