Comparative analysis of lip morphology in Brazilian caucasian individuals between 20 and 50 years old using stereophotogrammetry.

Purpose: This observational, cross-sectional study evaluated healthy Caucasian Brazilian individuals' normal lip dimensions according to sex and age (20-50 years) using stereophotogrammetry.

Methods: A total of 130 individuals divided into four groups according to sex and age were analyzed using stereophotogrammetry. Ten linear lip, five angular lip, and three lip surface measurements (upper, lower, and total lip vermilion) were obtained.