Dental impression tray
US4867682A · kind A · utility
44Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1987 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Nov 13, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C19/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental impression tray and method of using it to form in a light-polymerizable impression material an impression of a portion of dental anatomy in an oral cavity, the tray being formed of transparent material, preferably clear plastic, and molded into a channel-like shape defined by walls capable of having visible actinic light applied to the walls transmitted both through and within the walls. At least some of the outer edge portions of the tray are beveled, guiding light that has entered the walls of the tray against exiting loss that would not be effective in initiating polymerization of the impression material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.