| 摘要 |
PURPOSE: An orthodontic device is provided to enable a user to easily adjust tractive force in the oral cavity. CONSTITUTION: An orthodontic device comprises a first rotator, first and second retreat members(130,140), coupling members(150,160), a second rotator(170), and a manipulator(190). The first rotator comprises a first body, and first and second screw thread parts. The first and second retreat members retreat according to the rotation direction of the first body. The coupling member is combined with the retreat member and is combined with a tooth to be corrected. The second rotator is combined with the first body and is formed of an entry guide groove.
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