One step gingiva retraction and impression material and method
US11160641B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2018 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Jan 1, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/90
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dental retraction and impression system providing self-retracting and impression taking of a prepared tooth in one step. Paired setting materials simultaneously retract gingiva, widen a sulcus around the tooth, and take an impression of the tooth and margins. A low viscosity setting gingival retracting impression material having an astringent and a high viscosity setting impression material set together. The high viscosity setting impression material is heavy body and has a higher viscosity than the low viscosity setting gingival retracting material so as to force the low viscosity setting gingival retracting impression material into the gingival space or sulcus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.