A method for implanting a tooth implant in an at least partially edentulous patient including the steps of anchoring at least one attachment element in a patient's jaw bone, removeably and replaceably mounting a carrier assembly bearing at least one fiducial marker onto the at least one attachment element in a precisely repeatable position with respect to the patient's jaw bone, employing the carrier assembly for providing registration between the at least one fiducial marker and the patient's jaw bone and implanting the tooth implant by employing a tracking system which uses the registration to guide a drilling assembly.