| 摘要 |
An appliance for adjusting tooth and/or jaw malpositions, includes an upper arch wire suitably to be attached to teeth on the upper jaw of a user; a lower arch wire suitably to be attached to teeth on the lower jaw of the user; and a force-transfer element for mechanically connecting the upper arch wire and the lower arch wire to each other. The force-transfer element has a first longitudinal axis and includes a first end comprising an angled section. The angled section has a first hole, the longitudinal axis of which is parallel to the first longitudinal axis. The force-transfer element also includes a second end which is opposite to the first end and has a second hole which is rotationally offset 90° relative to the first hole.
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