A photographic evaluation of factors prevalent in Nepalese smile: A cross-sectional study

Aim: The aim of this study was to find out the prevalence of different characteristics of smile and to determine the level of normalcy based on the above. Materials and Methods: The standardized digital photographs of 529 participants were collected and transferred to personal computer in which the different characteristics of smile were visually inspected. Results: Smile with average upper lip position (54%) straight upper lip curvature in smile (46.9%), parallel incisal line to upper border of lower lip (51.8%) and incisal edges of maxillary dentition not touching to lower lip (62.4%) were most occurring characteristics with statistically significant prevalence of gingival and mucosal smiles amongst females. Conclusions: The study outlined few most occurring characteristics in smile of Nepalese population. The average upper lip position, straight upper lip curvature and parallel incisal line were some of the most prevalent characteristics in Nepalese smile.