Orthodontic archwire
US5131843A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | May 6, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C7/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orthodonic archwire and method of making same. The archwire through a unique combination of physical and material properties can be activated for providing a variety of teeth corrective forces simultaneously. The archwire is provided with a pair of loop structures substantially equidistant from the center line of the arch form., The posterior sections of the archwire are curved in two directions so as to provide both toe in forces, for rotation of the posterior teeth, and forces for extrusion of the posterior teeth and bite opening. The method of manufacturing the archwire is such that substantially no residual torque is present in the finally formed archwire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.