Preparation of a dental implant crown has a bolt pin fitted to the implant threaded shaft drilling with a rounded/replaceable tip and occlusion markings are registered by a video camera as a digitized 3-D presentation for the grinding

摘要

To set the bite of a dental implant, a bolt pin (3) which matches the implant threaded shaft drilling has a spring (4) and screw bolts (5,8) to set its length to position the rounded and exchangeable tip (7), to give the occlusion with registration of eccentricity and protrusion by an occlusion spray. The action is started by release (8) of the bolt (5) in the required position. The register of the occlusion color markings in the implant site and the facing tooth is taken by a video camera, and digitized to give a three-dimensional presentation for grinding the tooth crown blank, to tighten (5,8) the bolt pin (3) and set the length. The system uses a CEREC (RTM) program modified with extrapolation and correlation programs.