Abstract
Before the commencement of orthodontic treatment, a full examination including radiographs and a set of study models constitute a solid basis for a comprehensive orthodontic diagnosis, which in turn supports the treatment planning. To make an accurate assessment of the differential diagnoses concerning skeletal and dentoalveolar abnormalities, a cephalometric analysis is required. Lateral X-ray is a good complement for investigating the bite deviation and a good tool in treatment planning. The present study compares the dental and basal diagnosis in children with normal occlusion to see how well these two diagnostic methods are followed.