Objectives: to assess the normal range of different lip parameters with gender difference and its role in esthetic procedures for Iraqi people. Methods: direct lip measurements were performed with closed lip position using a digital vernier caliper in 132 young Iraqi subjects (89 female and 43 male). Results: Lip measurements showed sexual dimorphism with higher value in men than women in six parameters. Cutaneous height of the upper lip was higher in both sexes. The mustache area in males was longer in males compared to females. Also, it was noticed that upper lip vertical thickness had a higher value, especially in subjects with cosmetic procedures. In addition to that, vertical upper lip thickness showed a higher rise in values of mid-line upper lip parameters than those of lower lips. Conclusion: Lip parameters had established a base level for Iraqi subjects that had a variation from other populations with gender variance and the possible role of these parameters to be kept in mind during different surgical procedures (plastic surgeons, orthodontists, and forensic odontologists).
