| 摘要 |
An orthodontic appliance that is convertible to function in both light wire and edgewise techniques and which includes a sheath mountable on a tooth that may selectively receive any one of several wire receiving inserts. Each of the inserts is lockable to the sheath and thereafter removable so that the sheath, while still mounted on a tooth, can alternately be fitted with any one of several inserts. One of the inserts is formed to function as a light wire buccal tube, while another is formed to function as an edgewise buccal tube. A further insert is formed to function as an edgewise bracket.
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