Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created

摘要

A 3D virtual model of an intra oral cavity in which at least a part of a finish line of a preparation is obscured is manipulated in virtual space by means of a computer or the like to create, recreate or reconstruct finish line data and other geometrical corresponding to the obscured part. Trimmed virtual models, and trimmed physical models, can then be created utilizing data thus created. The virtual models and/or the physical models may be used in the design and manufacture of copings or of prostheses.

主权项

1. A system for manipulating a virtual dental model, the system comprising a computer having instructions that, when executed, cause the computer to:
receive a 3D virtual model of a dental site comprising dental surfaces, wherein a first portion of the dental site is obscured by a material; manipulate the 3D virtual model to create an auxiliary 3D virtual model that includes a representation of the first portion of the dental site in which the first portion is not obscured by the material; and provide topographical data of the first portion from the virtual model and the auxiliary virtual model so as to reconstruct data of the first portion of the dental site.