Abstract
Introduction: Lips competency is considered as an important feature in facial attractiveness
and short upper lips are considered as one of the etiological agents behind lips incompetency.
Therefore, this study was aimed to evaluate the mean of upper lip length difference in
individuals with competent, apart and incompetent lips at clinically rest position.
Material and Methods: Total of 66 (n=22 each group) Class I and vertically normal angle
individuals between age range of 12-19 years were included for their upper lip length
retrospectively. Individuals were divided into three main groups based on inter labial gap at
lips repose. Group 1- Competent Lips (inter labial gap =0mm), Group 2- Lips Apart (inter labial
gap >0mm ≤4mm), Group 3- Incompetent Lips (inter labial gap >4mm). Upper lip lengths were
assessed as mean and standard deviations. For the comparison of mean upper lip lengths
among three groups, ANOVA test was applied. Difference of upper lip length between genders
was calculated by applying Independent Sample t Test.
Results: Mean values of upper lip length for group 1, 2 and 3 were 20.04mm ±2.8, 18.81mm
±2.0 and 19.00 mm±2.6 respectively. The mean upper lip length for males was 19.61mm ±2.6
and for females was 19.07mm ±2.4. P value for difference of upper lip length among all three
groups combined was 0.228, which was insignificant and p value for the difference of upper lip
length between genders was 0.404 which was also statistically insignificant (p< 0.05 was
considered as significant).
Conclusions: This study showed statistically insignificant difference of upper lip length
among individuals with various lip positions at repose and also statistically insignificant
difference of upper lip lengths between genders.
Maliha Mumtaz, Mehwish Shaheed, Kausar Illyas, Afeef Umar Zia. (2020) Comparison of mean upper lip length in individuals with competent lips, lips apart and incompetent lips, Pakistan Orthodontic Journal, Volume 12, Issue 1.
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