Dentistry – Apparatus – Work support
Patent
1984-05-17
1985-12-03
Peshock, Robert
Dentistry
Apparatus
Work support
A61C 1100
Patent
active
045563870
ABSTRACT:
A dental articulator is disclosed, having a lower frame with a pair of condyles thereon defining a hinge axis, an upper frame carrying a pair of guides for slideably and pivotally receiving the condyles to permit the relative positions of the upper and lower frames to simulate movements of the human jaw, and retainers outboard of the condyles on opposite sides of the articulator connecting the upper frame to the lower frame and urging the upper and lower frames into a centric relationship while permitting the frames to be moved to simulate human jaw movements. The retainers are preferably pivotally joined to the upper frames on the hinge axis and may be loops of elastomeric material. A sleeve may be provided on each retainer so that a loop of the retainer protrudes from each end of the sleeve. The sleeve and retainer function as a hinge when pivoting the articulator to a fully opened position. An incisal pin is provided at the front of the articulator extending downwardly from the upper frame and supported by the lower frame. A forward-extending horizontal guide rod is provided along side the incisal pin for locating the upper and lower frames in a non-centric relationship.
REFERENCES:
patent: 2235524 (1941-03-01), Lentz
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