الفهرس 
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Abstract
Correction of transverse anomalies, such as crossbites, is a common orthodontic treatment objective. The importance of the transverse dimension becomes apparent when the potential and limits of certain treatment options, such as palatal expansion, have to explored, or when deciding extraction or non-extraction in borderline cases.
The present study was conducted on thirty patients with malocclusion and posterior crossbite and another thirty patients with malocclusion and no
posterior crossbite serving as a comparison group