| abstract |
A method for producing an artificial tooth fastened to a jawbone (4), comprising:fastening an implant screw (2) having a seat (6), in the jawbone; applying a pin (8) to the screw for indicating the screw orientation; taking an impression, and making a plaster model. Furthermore, the method comprises: scanning the plaster model; using the scanned data to determine an angle (a) between the implant screw (2) and tooth to be formed; designing the exterior for a possibly required coping (18) or re-duced crown shape (18'); providing a preformed abutment blank (12) having a pre-formed external anchoring portion (10) fitting into the seat (6) of the implant screw and having a preformed through bore (20) for a fixing screw (22) used for attaching the abutment blank (12) to the implant screw (2). When a coping is not required, an external reduced crown shape (18') is machined in a desired, predetermined direc-tion directly on a tooth-forming portion (24) of the abutment blank (12) opposite to the anchoring portion (10). A polyhedral external shape (25) is suitably machined on a specific support-forming portion (24) of the abutment blank (12). When a coping (18) is required, a coping blank (28) is provided which has a preformed polyhedral inside seat (26) fitting on said correspondingly shaped support-forming portion (24) of the abutment blank. |