Dentistry – Orthodontics – Arch wire attachment
Patent
1983-04-26
1984-11-20
Wilson, John J.
Dentistry
Orthodontics
Arch wire attachment
433 7, 433 11, 433 18, 433 20, A61C 300
Patent
active
044836740
ABSTRACT:
The invention refers to a device for orthodontic tooth regulation by means of fixed regulating appliances (Edgewise technique). Through such fixed appliances the teeth will be moved under control along a regulating archwire which is ligated to the brackets which are fixed to the teeth. In order to control the forces transmitted to the teeth to be moved and to avoid overload of the periodontal apparatus, it is proposed according to the invention to insert regulating screws along the regulating archwire between fixed parts (such as brackets or tubes) of the regulating appliance, which can be adjusted in their length. The regulating arch is preferably provided partly with a thread, to which regulating nuts can be screwed on. Using such regulating screws as force elements, the force transmitted to the teeth can be measured in a way that the teeth will be moved within a physiological frame. Treatment time for tooth regulation with such regulating screws can be reduced considerably in comparison with common methods using spring loops, coil springs or elastics.
REFERENCES:
patent: 618105 (1899-01-01), Knapp
patent: 632945 (1899-09-01), Knapp
patent: 660194 (1900-10-01), Lukens
patent: 2959856 (1960-11-01), Gurin
patent: 3690003 (1972-09-01), Gerber
patent: 3798773 (1974-03-01), Northcutt
patent: 4355975 (1982-10-01), Fujita
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