Orthodontic screw for a fast expansion on the anterior sector of

Details Orthodontic screw for a fast expansion on the anterior sector of Orthodontic screw for a fast expansion on the anterior sector of

1996-12-26

1998-07-07

Wilson, John J.

Dentistry

Orthodontics

By device having means to apply outwardly directed force

A61C 300

Patent

active

057758980

ABSTRACT:
The apparatus for obtaining an at least prevailing or even exclusive expansion in the anterior sector of the maxillary arch two substantially symmetrical components (1, 3) with arms (11, 12; 31, 32) fan-like stretching apart and to be combined with orthodontic bands (40); the two components (1, 3) are articulated to one another by means of a hinge (5); an expansion screw (7) acting between the two components (1, 3) is able to stretch them angularly apart by progressive actions to be exerted on the same screw.

REFERENCES:
patent: 3977082 (1976-08-01), Siatkowski
patent: 4348179 (1982-09-01), Nardella
patent: 4482318 (1984-11-01), Forster

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