Open AccessCorrelation of upper lip morphology to smile: A photographic study
Author(s) -
Neha Agrawal,
RB Sable
Publication year - 2015
Publication title -
apos trends in orthodontics
Language(s) - English
Resource type - Journals
eISSN - 2321-4600
pISSN - 2321-1407
DOI - 10.4103/2321-1407.159409
Subject(s) - upper lip , sexual dimorphism , occlusion , cephalogram , correlation , orthodontics , lower lip , positive correlation , medicine , dentistry , anatomy , mathematics , malocclusion , surgery , overbite , geometry
Aims and Objective: The purpose of this study was to examine different components of a smile in subjects with class I occlusion and to formulate a comprehensive photographic analysis of a smile. This study was designed to find a correlation between upper lip elevation and retraction with upper lip morphology during smiling among male and female groups. Materials and Methods: Lateral cephalogram and standardized frontal photographs were taken at rest and smiling. Results: A significant sexual dimorphism was apparent in several of the parameters studied. Middle portion of lower border of upper lip (MUL′-MUL) rose significantly higher by 0.91 mm in the male group than in the female group, during smiling (P = 0.003). Decrease in vermillion display (VE-VE′) was significantly higher in the male group than the in female group by 0.668 mm (P = 0.021). Conclusion: This comprehensive study of lip mobility, when applied to a larger population can enable us to further evaluate the correlation between lip morphology and mobility