| 摘要 |
An orthodontic bracket is described, and which includes a bracket base, which is releasably affixed to a patient's tooth; a bracket body borne on the bracket base, and which defines an arch wire slot, and which further has a selectively adjustable cross-sectional dimension; and an arch wire is received within the arch wire slot, and where the described embodiment of the bracket body, acting in combination with the arch wire is adjustable so as to provide a multiplicity of selective torque expressions, which act upon a patient's tooth. |
