Dental filling matrix band retainer method
US5788491A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Jul 14, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jul 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/85
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental matrix retention apparatus which comprises a longitudinally extending frame member, and two laterally extending fingers at an end of the frame member, the fingers being integral with the frame member, each finger having longitudinally spaced primary and secondary sides, there being a finger slot between the fingers and communicating with the primary and secondary sides of the fingers, the fingers projecting in laterally offset relation to a plane defined by the frame member; a holder carried by the longitudinally extending frame member for adjustable longitudinal movement therealong, the holder defining a holder slot, openingly facing the finger secondary sides; a band having a looping section to loop about a tooth, and overlapping sections, the band overlapping sections extending through the finger slot and then directly to the holder slot for retention therein, the band-looping sections extending adjacent the finger primary sides to be tightened toward the primary sides as the holder is adjustably moved longitudinally relative to the fingers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.