开咬，地包天，第三个是深覆盖？？？

linlin8 · 发表在 2009-8-28 10:19:24

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Correcting an Open Bite: Some of the bone in the upper tooth-bearing portion of the jaw is removed. The upper jaw is then secured in position with plates and screws.

Correcting a Protruding Lower Jaw: The bone in the rear portion of the jaw is separated from the front portion and modified so that the tooth-bearing portion of the lower jaw can be moved back for proper alignment.

Correcting a Receding Lower Jaw or "Weak Chin": The bone in the lower portion of the jaw is separated from its base and modified. The tooth-bearing portion of the lower jaw and a portion of the chin are repositioned forward.