Anatomically contoured matrix bands for use in dental restoration procedures
US6712608B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2001 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Sep 25, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/85
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention comprises an asymmetrically shaped matrix band. The asymmetrical shape of the matrix band provides form for molding a dental filling into a shape that closely approximates the asymmetrical and generally trapezoidal shape of a tooth. The matrix band comprises a cross-sectional area that curves asymmetrically in the vertical direction along a curve that is constrained by two radii. The first radius is applied near the top of the matrix band and has a magnitude that is approximately one third of the magnitude of the second radius that is applied at the bottom of the matrix band. The curvature of the cross-sectional area enables the matrix band to also provide form for molding a dental filling with a contact point in the anatomically correct location on a restored tooth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.