Dual coil spring lingual arch

Details Dual coil spring lingual arch Dual coil spring lingual arch

1991-08-06

1992-02-11

O'Connor, Cary E.

Dentistry

Orthodontics

Means to transmit or apply force to tooth

433 18, 433 7, A61C 300

Patent

active

050871960

ABSTRACT:
A dual coil lingual arch (10) appliance for use in the field of orthodontics is disclosed. Molar teeth (36, 38) are displaced distally by means of a primary wire arch (14) while anterior teeth (40) are displaced forward by means of a secondary wire arch (20). The primary wire arch (14) may be attached to the molar teeth (36, 38) by means of a pair of molar bands (42, 44), and the secondary wire arch (20) is attached to the primary wire arch (14) at a pair of spring junctions (30, 32). Near the spring junctions (30, 32) the secondary wire arch (20) is wound around the primary wire arch (14) to form a pair of spring coils (24, 26). In use, after the primary wire arch (14) is anchored to the molar teeth (36, 38) the secondary wire arch is activated by a practitioner by the action of lengthening the spring coils (24, 26), whereas the pressure on the molar teeth ( 36, 38) is independently set by means of preforming the primary wire arch (14). Thus, the amount of force applied to the anterior teeth (40) is independent of the amount of force applied to the molar teeth (36, 38).

REFERENCES:
patent: 2318001 (1943-05-01), Linde
patent: 4468196 (1984-08-01), Keller
patent: 4571178 (1986-02-01), Rosenberg

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