The evaluation of prepared microgroove pattern by femtosecond laser on alumina-zirconia nano-composite for endosseous dental implant application

Lasers Med Sci. 2016 Dec;31(9):1837-1843. doi: 10.1007/s10103-016-2059-8. Epub 2016 Sep 28.


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.

Keywords: Alumina; Endosseous dental implant; Femtosecond laser; Yttrium stabilized tetragonal zirconia poly crystal nano-composite.

MeSH terms

  • Aluminum Oxide / chemistry
  • Dental Implantation, Endosseous / methods*
  • Dental Implants*
  • Dental Materials / chemistry*
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Nanocomposites / chemistry*
  • Spectrometry, X-Ray Emission
  • Surface Properties
  • X-Ray Diffraction
  • Yttrium / chemistry
  • Zirconium / chemistry


  • Dental Implants
  • Dental Materials
  • Yttrium
  • Zirconium
  • Aluminum Oxide
  • zirconium oxide