Lip dimensions of an Adult Nigerian population with normal occlusion
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Date
2012
Authors
Isiekwe, G.I
daCosta, O.O
Isiekwe, M.C
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Contemporary Dental Practice
Abstract
Introduction: The soft tissue paradigm is placing greater
emphasis on the importance of the soft tissue profile to
orthodontic treatment planning. The purpose of this study was
to determine the lip dimensions of a Nigerian adult population;
compare the male and female values and to compare the values
obtained for Nigerians with those reported for other population.
Methodology: Lateral cephalometric radiographs of 100 students
(44 males and 56 females) of the College of Medicine, University
of Lagos, aged 18 to 25 years were taken. Selected subjects
were of Nigerian ancestry with normal occlusion and a
harmonious facial appearance. The radiographs were manually
traced and the upper and lower lip length and thickness of each
subject was measured. Statistical analysis was carried out using
SPSS, while the male and female values were compared using
student’s t-tests.
Results: Mean values for the lip dimensions were computed
for the entire sample. Marked sexual dimorphism was observed
with the males having thicker and longer upper and lower lips
than the females. The Nigerian sample also had a longer upper
lip and a thicker and shorter lower lip than that reported for
Caucasians. However, both population had a similar upper lip
thickness.
Conclusion: Cephalometric norms were developed for the lip
dimensions of a Nigerian population. Marked sexual dimorphism
was observed in the Nigerian population studied with the males
having longer and thicker lips than the females. The lip
dimensions of the Nigerian population studied differed from that
reported for Caucasians and other racial groups.
Clinical significance: The lip dimensions established in this
study would aid in orthodontic and orthognathic surgery
treatment planning for Nigerians. Furthermore, due to the
marked sexual dimorphism observed in the Nigerian population
studied, gender specific and not generalized norms should be
used.
Description
Keywords
Lip dimensions, Nigerian population, Cephalometry. , Research Subject Categories::ODONTOLOGY::Orthodontics , Research Subject Categories::MEDICINE::Surgery
Citation
Isiekwe GI, daCosta OO, Isiekwe MC. (2012) Lip dimensions of an Adult Nigerian population with normal occlusion. J Contemp Dent Pract. 13(2):188-193