Titanium plates ( 51 mm x 25 mm x 1mm ) ( n ( plates ) = 25 , N = 80 , n = 10 per group ) were conditioned with chairside silica coating ( CoJet-Sand , 30 microm silica coated Al ( 2 ) O ( 3 ) ) from a distance of approximately 10mm at a pressure of 2.8 bar for 15 s/cm ( 2 ) and silanized .
