Dental impression tray assembly
US4375965A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1981 |
| Grant date | Mar 8, 1983 |
| Priority date | — |
| Expiry date | Jun 15, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C9/0006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental impression forming apparatus including a dental impression tray in which a negative impression of a dental area is to be formed in dental impression material. Apertures are provided in the tray for passage of dental impression material therethrough. A cover member is supplied with the dental impression material, and is fitted over the tray. Upon application, in situ, of the cover member onto the tray, the dental impression material is forced through the apertures into the tray and around the dental area so that the negative impression can be formed. Preferably, guide pins are provided on the tray and corresponding holes are provided in the cover member to align the cover member with the tray, and guide the cover member toward the tray when a force is applied on the cover member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.