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VOLUME 13 , ISSUE 2 ( March-April, 2012 ) > List of Articles

RESEARCH ARTICLE

Lip Dimensions of an Adult Nigerian Population with Normal Occlusion

Gerald Ikenna Isiekwe, Oluranti Olatokunbo daCosta, Michael Chukwudi Isiekwe

Citation Information : Isiekwe GI, daCosta OO, Isiekwe MC. Lip Dimensions of an Adult Nigerian Population with Normal Occlusion. J Contemp Dent Pract 2012; 13 (2):188-193.

DOI: 10.5005/jp-journals-10024-1119

Published Online: 01-04-2012

Copyright Statement:  Copyright © 2012; Jaypee Brothers Medical Publishers (P) Ltd.


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.

How to cite this article

Isiekwe GI, daCosta OO, Isiekwe MC. Lip Dimensions of an Adult Nigerian Population with Normal Occlusion. J Contemp Dent Pract 2012;13(2):188-193.


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  1. Orthodontics: Current principles and techniques (4th ed), Elsevier Mosby 2005;Pg 3.
  2. Cephalometric soft tissue facial analysis. Am J Orthod Dentofacial Orthop 1999;116:373-89.
  3. Malocclusion of the teeth (7th ed), Philadelphia, SS White Dental Manufacturing Company 1907;Pg 60.
  4. A soft tissue cephalometric analysis and its use in orthodontic treatment planning Part 1. Am J Orthod 1983;84:1-28.
  5. The integumental contour and extension patterns. Angle Orthod 1959;29:93-104.
  6. Lip posture and its significance in treatment planning. Am J Orthod 1976;53:262-84.
  7. The influence of lip thickness and strain on upper lip response to incisor retraction. Am J Orthod 1982;82:141-48.
  8. Orthognathic surgery norms for American Black patients. Am J Orthod 1985;87:119-34.
  9. A distribution of antero-posterior skeletal jaw relationships in a Nigerian population. Afr Dent J 1987;1:23-27.
  10. A cephalometric study of incisor angulations in a Nigerian population. Br J Orthod 1989;16:177-81.
  11. Cephalometric values of schoolchildren in Lagos 12-14 years. (Dissertation) West African College of Surgeons 1992.
  12. Cephalometric values in Hausa-Fulani schoolchildren in Kaduna. (Dissertation) West African College of Surgeons, 1998.
  13. The cephalometric values of Igbo schoolchildren in Enugu, aged 11-13 years. (Dissertation) West African College of Surgeons 2001.
  14. Statistical methods for medical and biological students. London, Allen and Unwin 1940;122-32.
  15. The reliability of head film measurements. Conventional angular and linear measures. Am J Orthod 1971;60:505-17.
  16. Lip position and incisor relationship in Nigerian children. Afri Dent J 1988;2:26-30.
  17. Lip position and incisor relationship. Br Dent J 1972;112:147-55.
  18. Soft tissue cephalometric analysis for orthognathic surgery. J Oral Surg 1980;38:744-51.
  19. An evaluation of the mean cephalometric values for orthognathic surgery for black South African adults. Part II: Soft tissue. J Dent Assoc S Afr 1997;52:545-50.
  20. Cephalometric norms for orthognathic surgery in blacks American adults. J Oral Maxillofac Surg 1989;47:30-39.
  21. Analysis of soft tissue facial profile in white males. Am J Orthod Dentofacial Orthop 1992;101:514-18.
  22. Adult cephalometric norms for Saudi Arabians with a comparison of values for Saudi and North American Caucasians. Br J Orthod 1987;14:273-79.
  23. Soft tissue cephalometric norms in a South Indian ethnic population. Am J Orthod Dentofacial Orthop 2008;133:876-81.
  24. A cephalometric evaluation of American Negro women. Am J Orthod 1978;73:152-60.
  25. Determination of Holdaway soft tissue norms in Anatolian Turkish adults. Am J Orthod Dentofacial Orthop 2003;121:65-72.
  26. Soft tissue cephalometric analysis of a Nigerian population. (Dissertation) National Postgraduate Medical College of Nigeria, Nov 2010.
  27. Craniofacial characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion. J Appl Oral Sci 2011;19(2):118-24.
  28. A comparison of skeletal, dentoalveolar and soft tissue characteristics in white and black Brazilian subjects. J Appl Oral Sci 2010;18(2):135-42.
  29. A comparison of cephalometric norms for the African Bantu and a Caucasoid population. Eur J Orthod 1983;5:233-40.
  30. Bialveolar protrusion in a Zimbabwean sample. Am J Orthod Dentofacial Orthop 2003;123:133-37.
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