Orthodontic archwire
US4818226A · kind A · utility
31Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Sep 18, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C7/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orthodontic archwire having a specific, saddle-like configuration and being composed of a near-stoichiometric alloy of nickel and titanium which possesses memory retaining characteristics, the archwire having a first, second and third curved section, wherein the first and second curved sections include two different radii of curvature which extend distally from the midline of the archwire, and the third curved section includes two radii of curvature extending distally from the midline of the archwire, so that the preset form of the archwire resembles a saddle-like configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.