Orthodontic arch wire
US4412819A · kind A · utility
38Cited by
2References
14Claims
0Family size
Inventor
Key dates
| Filing date | Sep 15, 1982 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Sep 15, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C7/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orthodontic arch wire having anterior and posterior segments of different elasticity or stiffness to enable early and simultaneous treatment of teeth in the entire dental arch. The wire is preferably made by uniting a central segment of relatively resilient wire with end or posterior segments of a different and more rigid wire. Different cross-sectional shapes may also be used in the several segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.