Length control marked gutta-percha cones and method of insertion
US6264471A · kind A · utility
Inventor
Key dates
| Filing date | Mar 8, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A new and improved gutta-percha point for obturation of root canals comprising a cone with a gripping hub and an insertion tip and generally tapered toward the tip. The cone is also defined by indicia running side-to-side at predetermined positions relative to the tip to allow a visual alignment relative to a point of reference plane. The indicia further comprises a marking scale that includes a succession of discrete ring markings spaced incrementally along the gutta-percha point. A method of using the above-described gutta-percha cone is also described and this includes the steps of establishing a reference plane relative to the prepared root canal, inserting the gutta-percha cone into the prepared root canal, visually ascertaining a position of the markings relative to the reference plane to determine if the gutta-percha cone is too long, and cutting back the gutta-percha cone with reference to the markings if the gutta-percha cone is determined to be too long. The gutta-percha cone is then reset into the prepared root canal to perfect a precise and accurate fit. The new and improved obturating cone facilitates the visual ease of point of reference plane insertion into a prepare…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.