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Abstract

Facial asymmetry is a common feature in orthodontic patients. Mild skeletal facial asymmetry can be treated effectively by camouflaged orthodontic technique. Orthodontic treatment combined with orthognathic surgery would be suggested in some extreme cases of facial asymmetry. Although traditional posteroanterior cephalogram was 2D image, it was still full of reference meaning and value for diagnosing the asymmetric component in craniofacial area. The objective of this research was to investigate the differences in morphological characteristics of facial asymmetry patient who can be treated by orthodontic therapy only or combined orthognathic surgery. The pre-treatment postero-anterior cephalograms of two groups of 60 subjects (30 orthodontic and 30 surgical) with facial asymmetry were analyzed. Eleven landmarks and fifty-three angular and proportional measurements were made. Two sample t test was applied to identify the dentoskeletal variables that best separate the two groups. The findings of the study indicated that facial asymmetry patients with orthognathic surgery present with significantly mandibular asymmetric morphology in aspect of angles and linear proportions, larger linear dimensional proportion of the maxilla and arch width. However self-perception of frontal profile may be important factors affecting the patient’s decision to opt for surgical correction.

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