A Quantitative Analysis of Lip Aesthetics: The Influence of Gender and Aging
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The quantitative analysis of sexual dimorphism of facial structures may valuably support reconstructive and feminization surgery, thanks to the estimation of metrical thresholds useful for distinguishing male and female traits. This study aims at verifying the metrical characteristics of female and male lips, to provide indications for aesthetic surgery.
Thirty healthy Caucasian volunteers (20 men and 20 women) were divided into two groups according to age: 21–34 years and 45–65 years. Arches and the cutaneous (external) and mucosal (internal) labial surfaces were reproduced by stone models, and digitised using a computerised electromechanical instrument. Area, volume and thickness were measured separately for the upper and lower lips, and compared between sexes and ages by Student’s t test, and multinomial logistic regression.
All lip measurements were larger in males than in females; upper lip thickness best divided males from females, adopting a 9.5-mm threshold (percentage of correct diagnosis: 85 %). Young subjects always showed higher measurements than old subjects; lower lip thickness provided the highest percentage of correct age diagnosis (85 %, adopting a 13.8-mm threshold).
This study provides novel thresholds that may contribute to the assessment of adequate reconstruction of lips in aesthetic surgery.
Level of Evidence III
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KeywordsFacial anatomy Lips Aesthetic surgery Feminization surgery Transsexualism
Conflicts of interest
The authors declare that they have no conflicts of interest to disclose.
- 1.Farkas LG (1994) Anthropometry of the head and face, II edn. Raven Press, New YorkGoogle Scholar
- 7.Sforza C, Elamin F, Tommasi DG, Dolci C, Ferrario VF (2013) Morphometry of the soft tissues of the orbital region in Northern Sudanese persons. Forensic Sci Int 228(1–3):180.e1–180.e11Google Scholar
- 13.Ritz-Timme S, Gabriel P, Tutkuviene J, Poppa P, Obertovà Z, Gibelli D, De Angelis D, Ratnayake M, Rizgeliene R, Barkus A, Cattaneo C (2011) Metric and morphological assessment of facial features: a study on three European populations. Forensic Sci Int 207(1–3):239.e1–239.e8Google Scholar
- 17.Sforza C, Dolci C, Grandi G, Tartaglia GM, Laino A, Ferrario VF (2014) Comparison of soft-tissue orbital morphometry in attractive and normal Italian subjects. Angle Orthod [Epub ahead of print]Google Scholar
- 24.Dhejne C, Oberg K, Arver S, Landén M (2014) An analysis of all applications for sex reassignment surgery in Sweden, 1960–2010: prevalence, incidence, and regrets. Arch Sex Behav [Epub ahead of print]Google Scholar
- 29.Goel A, Patnaik VVG, Puri N (2014) Lip morphometry in 600 North Indian adults: a data base study for sexual dimorphism. Med Sci Law [Epub ahead of print]Google Scholar