A careful topographical characterization is important for reliable interpretation of the role of implant surface roughness in bone incorporation. In this paper, the currently available measuring instruments and evaluation techniques are described and discussed first, than literature on the role of surface roughness for cell and bone tissue reactions in vitro and, with special emphasis, the in vivo studies are reviewed. Finally, the results from a series of the authors own animal studies evaluating screw-shaped implants with different surface roughnesses are summarized. The results demonstrated firmer bone fixation for blasted implants than for turned ones. A blasted surface with an average height deviation (Sa) of 1.5 µm had a better bone fixation than a blasted surface with an average height deviation (Sa) of 1.2 µm. A tendency towards more bone in contact and higher removal torques was found for blasted implant surfaces with an average height deviation (Sa) of 1.2 µm than with blasted surfaces with 2.2 µm average height deviation (Sa).
"The Role of Surface Roughness for Implant Incorporation in Bone,"
Cells and Materials: Vol. 9
, Article 1.
Available at: http://digitalcommons.usu.edu/cellsandmaterials/vol9/iss1/1