| 摘要 |
An orthodontic appliance used to finalize or perfect the relationships between the teeth of a patient following the removal of fixed appliances or, in minor cases, instead of fixed appliances, which includes a resilient body having ideally related sockets to accept portions of the upper and lower teeth, a wire anchored in the body of the appliance arranged to engage the labial and/or buccal surfaces of some or all of the upper teeth, and embrasure engaging devices to enhance proper placement and retention of the appliance.
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