[Facial asymmetry: the benefits of cone beam computerized tomography].

Treatment planning in facial asymmetry is complex and requires precise diagnosis and planning. In the case of a fourteen year old boy with Parry Romberg syndrome, cone beam computerized tomography scanning was used to analyse the asymmetry. Linear, angular and volumetric measurements helped to make clear the extent of the asymmetry, giving the orthodontist and surgeon as well as the patient insight into the possibilities and expectations of treatment. Also the mirror image of the unaffected side superimposed on the affected side was very helpful in this respect. The latter may offer new possibilities for fabrication of individualized alloplastic onlays to further correct asymmetry in the future.