Dentistry – Apparatus – Work support
Patent
1990-09-27
1991-09-10
Wilson, John J.
Dentistry
Apparatus
Work support
433 61, A61C 1102
Patent
active
050469495
ABSTRACT:
An articular support system for dental model sets includes a fixture having an upper portion carried by a lower base portion. The base portion has a base plate which connects with an inner support post. This post is formed with a vertically extending inner passageway. The upper portion includes an inner and outer plate connected by a releasable hinge. To use the system a base of a dental model of a person's upper teeth and lower teeth are each molded with front and rear indentations. Each model then fits into a bracket having spaced apart end walls. On an inner side of each end wall is a locking tab that fits into the respective model indentations. The lower teeth model bracket next is affixed to the fixture base plate with mastic. The upper model teeth then are placed in contact with the lower model teeth to reproduce the bit that occurs inthe person's mouth. Next, the upper portion inner plate is loosely positioned in the base portion post passageway. With the outer plate positioned on top of the upper teeth model bracket, the plate and bracket are joined together with mastic. Lastly, the upper portion inner plate is secured with mastic in the post passageway. During preparation of crowns, dentures and like appliances, the models may be readily removed from the fixture and then reattached with the bite positioning accurately and reliably reproduced.
REFERENCES:
patent: 118242 (1871-08-01), Hoffstadt
patent: 321457 (1885-07-01), Smith
patent: 981430 (1911-01-01), Kennedy
patent: 3078577 (1963-02-01), Prentiki
patent: 4175325 (1979-11-01), Beckwith
C. J. Star Enterprises, Inc.
Schmitt John L.
Smith Jeffrey A.
Wilson John J.
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