| 摘要 |
An orthodontic bracket for straightening teeth has a plastic base member for cementing to a tooth with a bracket portion extending outwardly thereof with a slot thereacross. The slot is substantially wholly contained in an elongated metal insert lengthwise thereof molded immovably into said plastic. The slot is rectangular in cross section for receiving a similarly shaped arch wire for controlling the position of the tooth anteroposteriorly, laterally and longitudinally on its long axis.
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