Dental treatment method
US5205743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a method of decreasing the risk of injury from mercury in conjunction with dental treatment. The invention is characterized by passing an effective air flow immediately outside the oral cavity in which the dental treatment is effected. The air flow, together with air removed by suction from the oral cavity when sucking saliva therefrom is passed through a first filter in which solid and liquid particles are extracted from the air flow. The air is then passed through a second filter which is capable of taking up essentially all of the mercury vapor present in the air. This filter is preferably a selenium filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.