Dental file
US4332561A · kind A · utility
72Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1981 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | May 14, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental file is disclosed which is particularly useful in endodontia for removing dead or damaged tissue from a curved tooth root canal. The file has a flexible tapered shank which has a cutting surface on its periphery and a pilot projecting from the tapered end of the file for guiding the shank along the curved root canal preventing the cutting surface near the end of the shank from gouging into the wall of the curved root canal or penetrating too far through the apical foramen of the root canal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.