Smile line assessment comparing quantitative measurement and visual estimation
Introduction: Esthetic analysis of dynamic functions such as spontaneous smiling is feasible by using digital videography and computer measurement for lip line height and tooth display. Because quantitative measurements are time-consuming, digital videography and semiquantitative (visual) estimation according to a standard categorization are more practical for regular diagnostics. Our objective in this study was to compare 2 semiquantitative methods with quantitative measurements for reliability and agreement.
Conclusions: Smile line analysis can be performed reliably with a 3-grade scale (visual) semiquantitative estimation. For a more comprehensive diagnosis, additional measuring is proposed, especially in patients with disproportional gingival display. (Am J Orthod Dentofacial Orthop 2011;139:174-80)
Download the full article, from the American Journal of Orthodontics and Dentofacial Orthopedics February 2011, Vol 139, Issue 2
