Expandable dental impression tray
US5040976A · kind A · utility
48Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Feb 23, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C9/0006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental impression tray is made of thermoplastic material which may be heated in order to shape the tray to accommodate the patient's dental arch. The tray includes a channel for receiving impression material, and the channel has a folded section which may be unfolded when the tray is heated in order to increase the height, width or length of the channel. The folded section extends outwardly from the channel and provides convenient gripping structure for removing the tray from the mouth after the impression is taken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.