Dental file
US4299571A · kind A · utility
39Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1979 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Aug 3, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a dental file for use in cleaning out or extirpating root canals, particularly those which are curved, wherein the file which conventionally is provided with cutting or abrading flutes, typically in a spiraled manner, is also provided with a smooth, non-abrading pilot end which rides on the deep inner portion of the root canal wall and prevents the file from straightening out and causing the end thereof to "zip" or slice into the canal wall in an uncontrolled manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.