Method for making custom dental impression trays
US4401616A · kind A · utility
35Cited by
11References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 19, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Aug 19, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C9/0006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flat uniform thickness or flat sheet of thermoplastic material is heated to deformable, nonresilient, nonliquid condition, shaped over a built-up study model of the jaw ridge of a patient requiring a dental prosthesis and cooled to substantially rigid condition to form a custom dental impression tray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.