Dentistry – Apparatus – Work support
Patent
1979-04-24
1980-08-26
Peshock, Robert
Dentistry
Apparatus
Work support
A61C 1100
Patent
active
042193290
ABSTRACT:
The present invention relates to a device for use in dentistry as an aid to the production of very accurate dental restorations such as inlays, crowns, bridges and the like. In its essentials the invention provides an instrument having two parallel plate members, spaced apart, wherein the top plate preferably has one straight edge at the rear thereof and a forwardly projecting area to which a stone model may be secured. The lower plate is rectangular and is adapted to have secured thereto a stone model of the patient's mating jaw, the plates being mounted for relative vertical movement to bring the opposed teeth of the two jaws into the patient's functional bite position. The upper and lower plates are supported vertically and in spaced parallel relation by two posts disposed laterally of the central protruding portion of the top plate and on either side of the stone jaw reproductions. The posts slide within outer upper cylinders secured to the top plate.
REFERENCES:
patent: 2600899 (1952-06-01), McClain
patent: 3059336 (1962-10-01), Windish
patent: 3409986 (1968-11-01), Freeman
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