J-shaped pin for making dental prothesis
US3952415A · kind A · utility
Inventors
Key dates
| Filing date | Feb 18, 1975 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Feb 18, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C9/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In the making of fixed dental prothesis, a model is employed, which is an accurate replica of the patient's teeth and gums. For reinforcement, the model is fixed to a base. A model comprises a replica of the teeth remaining in the patient's mouth and a replica of teeth to be prepared by restorative dentistry. For preparing the teeth by restorative dental techniques, a die is used. It is desired that the die be removed from and replaced in the model with facility, be indexed accurately relative to the model, and have stability while positioned in the model against forces applied in the practice of prothesis, and also be removable from the base on which the model is secured. Toward this end, a pin is fixed in the die having a locating leg and an indexing leg interconnected by an arcuate portion of the pin. The legs extend outwardly from the die to be received by the base to which the model is secured. The locating leg and the indexing leg have conical or wedgelike configurations and the base has openings to receive the legs contoured to conform to the configuration of the legs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.