Method and apparatus for producing datasets for making dental prostheses

US7623693B2 · kind B2 · utility

Assignee

• INSTITUT STRAUMANN AG · CH

Inventors

• Stephan Holzner · Burghausen, DE
• Gerhard Weber · Landsberg am Lech, DE

Key dates

• Filing date: Oct 19, 2005
• Grant date: Nov 24, 2009
• Expiry date: Oct 25, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30004
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and apparatus for producing data for making dental prostheses, wherein the data can be produced on the basis of a model (2) which comprises individual segments (3a, 3b, 3c, . . . ), such as representing a tooth, a preparation, a gingival area, a tooth gap or a small group of teeth, from different directions in space, and a storing device for storing the shape data obtained thereby, and—second shape data (12) of only the one segment (3a, 3b, 3c, . . . ), only part of the segment (3a, 3b, 3c, . . . ) being scanned, and the segment (3a, 3b, 3c, . . . ) being arranged in a fixed orientation relative to a reference, and b) a comparing device for comparing the first and second shape data (1, 12) to determine the orientation of the first shape data (1) relative to the reference.