| 摘要 |
A self-locking orthodontic bracket includes a supporting base (10) and transversely spaced tying lugs (12) interrupted by a transverse archwire slot (18, 20). A closure mounted on the bracket includes a movable cover (21, 50) slidably overlapping an anterior surface (17) across the bracket. The closure is supported by sliding guides (30, 22) that engage opposed side surfaces (15 or 16) of the tying lugs (12). A transverse flat spring (28) is recessed within thefixed wall to selectively engage indented areas (33) on the posterior surface ofthe cover (21, 50) and serves as a detent. The detent selectively positions the cover (21, 50) in an open or closed position relative to the archwire slot (18, 20).
|
