Are you referring to iCAT? What you need would be depending on what software will be used to fabricate the eventual surgical guide digitally. Nobel has it's own specs, and Materialise have their own. I believe it is 5% on teeth and less on the other non dental area. Ask your surgeon before proceeding. If not, just get the VivoTac teeth from Ivoclar if surgeon wants to 'look see' . . . http://www.ivoclarvivadent.us/en/pr...-prosthetics/teeth/sr-vivotac-and-posteriors/ LCM