Apparatus for cushioned bite jumping and the correction of class

Details Apparatus for cushioned bite jumping and the correction of class Apparatus for cushioned bite jumping and the correction of class

1996-04-18

1997-10-21

O'Connor, Cary E.

Dentistry

Orthodontics

Means to transmit or apply force to tooth

A61C 736

Patent

active

056789904

ABSTRACT:
An improved appliance for correcting Class II malocclusions with automatic adjustment as tooth movement, bone movement, or both occur. Instead of employing screw adjustments as does much of the prior art, the present invention applies correcting forces by means of a spring which expands through a pre-set, compressed distance. A linkage is employed to increase corrective forces while maintaining a reasonable closure effort. The appliance can be made in a variety of sizes for incorporation of longer or stronger springs as is required by a particular case. The relative positions of the components of the appliance can be reversed so that it can also serve to correct some Class III protrusions as well.

REFERENCES:
patent: 3798773 (1974-03-01), Northcutt
patent: 4382783 (1983-05-01), Rosenberg
patent: 4462800 (1984-07-01), Jones
patent: 4472139 (1984-09-01), Rosenberg
patent: 4708646 (1987-11-01), Jasper
patent: 4795342 (1989-01-01), Jones
patent: 5352116 (1994-10-01), West
patent: 5562445 (1996-10-01), DeVincenzo et al.

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