Orthodontic arch wire

Details Orthodontic arch wire Orthodontic arch wire

1977-05-02

1980-02-05

Kinsey, Russell R.

Dentistry

Orthodontics

Means to transmit or apply force to tooth

A61C 700

Patent

active

041864875

ABSTRACT:
Orthodontic arch wires comprise at least one strand having a generally rectangular cross-section and which is loosely helically wound so that adjacent turns are separated from each other. The wide dimension of the strand travels helically along the length of the wire. In order to provide stiffer wires, two or more rectangular strands may be placed adjacent each other and helically wound, and/or, one or more round or other cross-sectional configuration strands may be wound with the rectangular wire, for example in the interstices thereof. The arch wire is arranged such that the outer dimension is substantially the same for all configurations. In a further embodiment, the rectangular strand is wound so as to have overlapping turns, the frictional forces developed at the overlapping portions of the turns increasing the stiffness of the arch wire. The arch wire may be flattened, for example by passing through orthogonally arranged pairs of rollers to provide an arch wire with a generally rectangular outer configuration so as to be useful in torquing applications.

REFERENCES:
patent: 3838515 (1974-10-01), Paugh et al.
"HI-T" Ad, "American Journal of Orthodontics", vol. 49, #12, Dec. 1963.

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