Facial aesthetics: 1. Concepts and canons.

UNLABELLED The clinical ability to alter dentofacial form requires an understanding of facial aesthetics. This is vital for any clinician involved in treatment that will alter a patient's dentofacial appearance, whether through orthodontics, facial growth modification, corrective jaw surgery or aesthetic dentistry. Part 1 of this article aims to cover the historical and theoretical aspects of facial aesthetics and their importance in contemporary dentofacial treatment. Part 2 will cover important aspects of the interview and clinical assessment of patients requiring alterations in their dentofacial appearance, including guidelines used in the assessment of facial proportions and symmetry. CLINICAL RELEVANCE These articles cover the theoretical and clinical aspects of facial aesthetics required by clinicians involved in the treatment of dentofacial deformity.