Patent ID: 7854611
Filing Date: 2010-12-21
Classification: A61C,G16H

Abstract:
1. A method of generating a digital supplementary device for dental implantation, comprising the steps of: a) preparing a mouth model based on the internal shape of the oral cavity of the patient; b) using a 3D scanner to scan said mouth model so as to obtain a digital model and defining the digital model as a positioning object, and then loading a digital tooth model of the missing tooth or teeth in said positioning object in the place where the tooth or teeth are missing and defining said digital tooth model as an attached positioning object; c) scanning the oral cavity of the patient by means of CT (computed tomography) scan to obtain a digital model and defining the digital model as a reference object; d) selecting multiple corresponding points of said positioning object and said reference object as characteristic points; e) overlapping said positioning object and said reference object by means of the characteristic points of said positioning object and said reference object to have said attached positioning object be positioned on said reference object; and f) obtaining positioning data of said attached positioning object and outputting said attached positioning object and said positioning data to provide a digital supplementary device for dental implant planning, wherein the positioning data obtained during step f) comprises at least the coordinates and stress-bearing axis of said attached positioning object, and wherein during step b), three cusp points are selected from the occlusal surface of said digital tooth model to define an occlusal plane, and then a straight line is defined such that it is based on the reference point of the recessed portion of the occlusal surface of said digital tooth model and is extended perpendicularly to the occlusal surface of said digital tooth model, where the straight line is the stress-bearing axis of said digital tooth model.