2) Skeletal transverse discrepanciesTransverse skeletal discrepancies may involve either the maxilla or the mandible or a combination of both. The maxillary problems in a transverse dimension usually result from a symmetric or asymmetric constriction of the basal arch, with or without posterior crossbite depending upon the severity of the condition. The maxilla can undergo some rotational changes relative to the cranial base producing an asymmetric occlusal relationship
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