Photographic and videographic assessment of the smile: objective and subjective evaluations of posed and spontaneous smiles.

Introduction: Esthetic considerations play an increasingly important role in patient care, and clinicians need a methodology that includes imaging techniques to capture the dynamic nature of the smile. Photographs of the posed smile are routinely used to guide diagnosis and treatment, but there is no standardized and validated method for recording the dynamic smile. The purposes of this study were to (1) determine whether a posed smile is reproducible, (2) compare visual and verbal cues in eliciting a smile, and (3) compare the diagnostic value of videography and photography in evaluating a patient's smile.