Orthodontic biassing device with deformed screw threads

Details Orthodontic biassing device with deformed screw threads Orthodontic biassing device with deformed screw threads

1980-05-13

1982-10-19

Mancene, Gene

Dentistry

Orthodontics

By device having means to apply outwardly directed force

254 98, A61C 300

Patent

active

043548326

ABSTRACT:
An orthodontic biassing device with deformed screw threads on the elongated threaded member or receptacle member to provide an interference, but threadable, fit with its respective threaded member to substantially prevent backing-off of the screw due to reaction forces in the mouth of a patient. Sufficient play and tolerance is provided to enable the device to be relatively loose to facilitate alignment and installation in a patient's mouth. After installation, and under expansion conditions, the device tightens up to provide a substantially rigid structure.

REFERENCES:
patent: 853734 (1907-05-01), Reichert
patent: 1158454 (1915-11-01), Camp
patent: 1928402 (1933-09-01), Van Sickle
patent: 2177004 (1939-10-01), Purtell
patent: 2504291 (1950-04-01), Alderfer
patent: 3076208 (1963-02-01), Moore
patent: 3104493 (1963-09-01), Nalle
patent: 3134290 (1964-05-01), Jentoft
patent: 3661194 (1972-05-01), Macfarlane et al.

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