Method and workstation for generating virtual tooth models from three-dimensional tooth data

US7740476B2 · kind B2 · utility

Assignee

• Ora Metrix, Inc. · US

Inventors

• Rudger Rubbert · Berlin, DE
• Thomas Weise · Berlin, DE
• Peer Sporbert · Berlin, DE
• Hans Imgrund · Berlin, DE
• Mario Leichner · Hohen Neuendorf, DE
• Rohit Sachdeva · Plano, US

Key dates

• Filing date: May 19, 2006
• Grant date: Jun 22, 2010
• Expiry date: Oct 27, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H40/63
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method is described for taking a three-dimensional virtual model of the dentition and associated anatomical structures of a patient and isolating individual teeth from the rest of the anatomical structure, e.g. gums, to thereby produce individual, virtual three-dimensional tooth objects. The individual tooth objects can be displayed on the display of an orthodontic workstation and moved independently from each other, and thereby form the basis of planning treatment for the patient. The individual, virtual three-dimensional tooth objects are created by comparing the virtual model of the dentition to virtual, three-dimensional template teeth that are stored in memory in a process described in detail herein. The template teeth can include roots as well as crowns. The template teeth can be stored objects acquired from some external source or alternatively developed from a database of patient scans. Virtual three-dimensional brackets are also stored in the memory of the workstation. The virtual brackets can be placed on the virtual teeth and moved relative to the teeth as needed in a preliminary step in treatment planning.