Orthodontic appliance system

Details Orthodontic appliance system Orthodontic appliance system

A - Human Necessities

61

C

83/1

A61C 7/00 (2006.01)

Patent

CA 1275834

ABSTRACT OF THE DISCLOSURE An orthodontic appliance is fabricated from a fiber reinforced composite material with the force delivery component having a flexure modulus of elasticity between 0.3 x 106 and 30 x 106 psi and a ratio of yield strength to modulus of elasticity up to at least about 40 x 10-3. The composite consists essentially of a polymeric matrix and a fiber component embedded within the matrix with the fiber component constituting greater than 5 percent by weight of the composite material. The system is particularly efficacious in providing materials having moduli of elasticity beyond the scope of those provided by the metal alloys utilized heretofore coupled with desirable strength characteristics and improved aesthetic qualities.

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