Soft Tissue Upper Lip Thickness in Different Skeletal Malocclusion Subjects -A Comparative Cephalometric Study

Abstract

The purpose of this study was to determine the soft tissue upper lip thickness of subjects with different
skeletal malocclusions. Lateral cephalograms of 30 patients ( control group : skeletal malocclusion I -
10, Case group : skeletal malocclusion II - 10 , skeletal malocclusion III - 10 ) were selected randomly
from orthodontic records of subjects who reported to the Department of Orthodontics in Saveetha Dental
College.All cephalograms were traced and upper lip thickness was measured using FACAD software.
One way - ANOVA test was done, soft tissue upper lip thickness was found to be statistically significant
(p<0.05) among different skeletal malocclusions. Post hoc test ( Tukey HSD ) was performed to find out the
differences between each skeletal class , the upper lip thickness was found to be comparatively high in Class
III compared to Class I and Class II (p<0.001). This study concluded that soft tissue upper lip thickness was
found to be greater in skeletal class III malocclusion compared to other skeletal class I and II malocclusion.