Patent ID: 7306458

Claim:
An adjustable orthodontic bracket, comprising: an orthodontic arch wire fixing member for fixing one or more than one orthodontic arch wires in a position such that a predetermined stress is generated and applied to the tooth to be treated; a male gear ring, fixed under said orthodontic arch wire fixing member, said male gear ring having a smooth external ring surface and a male gear structure ring surface under said smooth external ring surface, wherein the diameter of said male gear structure ring surface is bigger than the diameter of said smooth external ring surface; a housing, covering said male gear ring, said housing having a female gear structure ring surface and a smooth internal ring surface under said female gear structure ring surface, the diameter of said smooth internal ring surface being bigger than the diameter of said female gear structure ring surface, the diameter of said female gear structure ring surface being bigger than the diameter of the upper open of said housing, wherein said female gear structure ring surface matches said male gear structure ring surface; an elastic member, located inside said housing and under said male gear ring for biasing the male gear ring into contact with the female gear ring; and a tooth surface attachment plank and base plate, located under said elastic member, said tooth surface attachment plank and base plate connecting with said housing.