| 摘要 |
Two-piece self-ligating orthodontic brackets including a bracket base, at least one arch wire slot formed in the bracket base adapted to receive an arch wire therein, and a ligation cover that is hingedly attachable to the bracket base. The bracket further includes means for resisting lateral movement of an occlusal front portion of the ligation cover so as to guide the occlusal front portion of the cover as the cover is closed over the bracket base. For example, the bracket base may include a pair of spaced apart guides which extend from the base in a labial-buccal direction so as to define a receiving cavity between the guides. The cover includes a corresponding occlusal front nose portion which is configured to be received within the receiving cavity when the cover is closed.
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