Crystalline alumina orthodontic bracket

Details Crystalline alumina orthodontic bracket Crystalline alumina orthodontic bracket

1992-08-27

1992-05-05

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

264 66, 264 67, 501153, B23P 1300

Patent

active

051095866

ABSTRACT:
An orthodontic bracket is made from crystalline alumina, preferably crystalline alpha-alumina. The bracket comprises a base member for attaching to a tooth and a body member extending from the base member. The body member includes walls that define an archwire groove. The walls comprise crystalline alumina. The bracket has sufficient strength to withstand normal torquing forces imparted by an archwire.

REFERENCES:
patent: 4122605 (1978-10-01), Hirabayashi et al.
patent: 4219617 (1980-08-01), Wallshein
patent: 4639218 (1987-01-01), Jones et al.

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