Apparatus and method for determining tooth mobility
US4034476A · kind A · utility
4Cited by
3References
8Claims
0Family size
Inventor
Key dates
| Filing date | Dec 15, 1975 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Dec 15, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0053
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental impression tray fastened to teeth in one quadrant, supports through a semi-rigid, non-resilient member, an electric transducer having an input probe positioned against the lingual surface of a tooth. A strip chart recorder is electrically coupled to the transducer and produces a graph in response to movement of the tooth caused by externally manually applied bi-directional forces on the tooth. A special tool is employed to apply forces, being adapted not only to movement of molars, but also incisors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.