1975-10-08
1977-03-29
Peshock, Robert
A61C 1300
Patent
active
040140954
ABSTRACT:
An artificial tooth for use in a denture comprising a base portion, an occlusal portion, and an intermediate portion sandwiched between and secured to the base portion and occlusal portion, the intermediate portion being resilient to permit the occlusal portion yieldably to move relative to the base portion. The intermediate portion is disposed generally at equal vertical distances from the occlusal surface of the occlusal portion and the ridge lap surface of the base portion. Two connecting members, spaced apart in the mesial-distal direction, are provided for limiting the movement of the occlusal portion relative to the base position. Such members are rigidly connected to the occlusal portion and loosely pivotally connected to the base portion. The loose pivotal connection permits the occlusal portion to move from its normal portion toward the base portion even by tipping movement. The tooth may also include vertically extending tabs or projections connected to the occlusal portion or the base portion or both to limit the movement of the occlusal portion. The projections may be so situated between the occlusal and base portions to prevent excessive tilting of the occlusal portion, a pinching of the resilient portion and rotation of the occlusal portion with respect to the base portion.
REFERENCES:
patent: 2380468 (1945-07-01), Saffir
patent: 2880508 (1959-04-01), Lester et al.
patent: 3722094 (1973-03-01), Rivoir
Indiana University Foundation
Peshock Robert
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