| 摘要 |
A device for distalizing maxillary molars. The device comprises a spring attached to a tubular head and an attached ligature tie wire. The device is attached by a ligature tie wire at the mesial end to a hook or eyelet on a maxillary bicuspid and pushes at the distal end on a buccal tube or bracket attached to a maxillary molar. The compressed spring creates a force that tends to move the molars distally.
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