Endodontic dental instrument
US5735689A · kind A · utility
37Cited by
34References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1995 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Dec 11, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to improved endodontic dental instruments for extirpating and enlarging a root canal and methods for use thereof. The dental instruments of the invention include a helical radial land and a helical blade edge spaced from the land on its opposite sides by helical flutes. Dental instruments according to the invention exhibit improved and more balanced side cutting in curvilinear canals and non-circular canal areas such as fins or anastomosis canal regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.