Dentistry – Orthodontics – By device having means to apply outwardly directed force
Patent
1987-11-09
1989-03-28
Peshock, Robert
Dentistry
Orthodontics
By device having means to apply outwardly directed force
A61C 700
Patent
active
048159689
ABSTRACT:
An orthodontic appliance is disclosed for expanding (i.e., moving in either inward or outward direction) any desired tooth or teeth of the upper arch, including substantially the entire upper arch relative to a pair of substantially transversely opposed teeth of the upper arch, preferably molars, without reaction forces or moments on this pair of teeth causing unintended movement of these teeth. A band is secured to each tooth of this pair of teeth for mounting a palatal arch bar extending substantially transversely between this pair of teeth. Extension wires extend from the bands for applying corrective forces to any one or more of the teeth of the upper arch spaced from the stated pair of teeth. The arch bar applies a force to a pair of teeth for substantially cancelling out any forces transmitted to the pair of teeth by the expansion wires.
REFERENCES:
patent: 1504942 (1924-08-01), Comegys
patent: 3162948 (1964-12-01), Gerber
patent: 4433956 (1984-02-01), Witzig
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