The surface of the teeth in both jaws that touches the lips.
A small elastic o-ring, shaped like a donut, used to hold the archwire in the bracket.
A tiny rubber band, or sometimes a very thin wire, that holds the orthodontic wire in the bracket.
The tongue side or inside of the teeth in both jaws.
This orthodontic appliance moves the lower molars back and the lower front teeth forward to make room for crowded front teeth. By applying pressure to the bumper, the lower lip muscles move the molars back.
An inability to close the lips at rest, most commonly caused by protruding front teeth or an excessively long face.
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