Abstract
Correcting Class II subdivision malocclusions characterized by dentoalveolar asymmetry has long been a challenge for clinicians. In Class II subdivision the molar occlusion is Class II on one side, and Class I on the other. Before planning orthodontic treatment to correct subdivision problems, the location of the asymmetry must be identified. Is it in the maxillary arch, the mandibular arch, or a combination? Janson observed slightly better treatment results in asymmetric extraction of three premolars compared with extraction of four. The asymmetric-extraction choice tends to be more successful in obtaining midline correction with reduced incisor retraction. This article shows a use of a Customized Transparent Graphed Jig (CTGJ) to measure skeleton-dental asymmetry of maxillary and mandibular arch. In this case report Class II subdivision malocclusion treated by three premolar extraction diagnosed using customized transparent graphed jig is discussed.
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