Method and device for the retraction and hemostasis of tissue during crown and bridge procedures
US6890177B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Dec 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C9/0033
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and a device for effecting the cordless retraction of the gingival sulcus tissue prior to the taking of an impression of a tooth for making a crown or bridge which is attained by controlling any bleeding in the gingival sulcus area, and utilizing a dental dam preferably formed of a sponge or foam like material to contain an astringent fortified silicone impression material embedded about the prepared tooth, and using the patient's biting force to apply the necessary pressure onto the dam until the silicone impression material sets and adheres to the dam to enhance easy removal of the set impression material from the tooth. The dam is formed to accommodate either the posterior teeth or the anterior teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.