Abstract
BackgroundAnterior open bite is a challenging malocclusion to correct orthodontic treatment. Anterior open bite associated with over-erupted posterior teeth and long lower facial height should be treated by reduction of posterior dimension for esthetic results. Although the possibility of orthodontic treatment of an anterior open bite has increased with the introduction of skeletal anchorage, there are still cases requiring surgery for various reasons.Case presentationThis case report covers an anterior open bite of a 25-year-old man successfully treated with the posterior maxillary segmental osteotomy (PMSO) and miniplates. After the pre-surgical orthodontic treatment, the PMSO between canines and first premolars was performed under local anesthesia and miniplates were placed on the zygomatic buttress. As a result of 28 months of treatment, an impaction amount of 3.5 mm was obtained in the maxillary posterior teeth, and the facial esthetics improved at rest and smile.ConclusionThe impaction of the posterior dentoalveolar segment using the PMSO can be a good treatment option in patients with anterior open bite showing long lower facial height.
Highlights
ConclusionThe impaction of the posterior dentoalveolar segment using the posterior maxillary segmental osteotomy (PMSO) can be a good treatment option in patients with anterior open bite showing long lower facial height
Anterior open bite is a challenging malocclusion to correct orthodontic treatment
In this type of malocclusion, intrusive mechanics are required for optimal esthetic results
Summary
The impaction of the posterior dentoalveolar segment using PMSO can be a good treatment option in patients with anterior open bite showing two occlusal planes. In order to reduce side effects and increase treatment efficiency, planned orthodontic movement must be performed in the pre-surgical orthodontic treatment, as with orthognathic surgery
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