Orthodontic digital setups
US8897902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2012 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Feb 17, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H50/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods for recognizing a virtual tooth surface, defining a virtual tooth coordinate system, and simulating a collision between virtual teeth are provided. Methods include receiving input data specifying a point on the rendered surface model associated with a tooth, deriving a perimeter on the surface model of the tooth, and analyzing the surface model along a plurality of paths outwardly extending from points on the perimeter. Methods also include receiving point input data, receiving axis input data that defines first and second axes associated with the virtual tooth, computing a substantially normal vector for a portion of the tooth surface surrounding the point, and computing a coordinate system. Methods also include receiving permissible movement input data directed to permissible movement of a first virtual tooth, bringing the first virtual tooth into contact with a second virtual tooth, and displaying data resulting from the simulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.