Evaluación sagital de los labios en individuos con diferente patrón de crecimiento facial vertical: estudio retrospectivo en radiografías cefálicas laterales, Cuenca.

Abstract

Introduction: The analysis of the position of the lips is important since it influences the occlusion, the stability of the teeth and consequently the facial aesthetics. Objective: To evaluate the thickness of the lips in individuals between 18 and 45 years of age, with different patterns vertical facial in lateral cephalic x-rays of the skull Methods: Observational study with correlational approach, 160 lateral cephalic x-rays were evaluated in digital format using a 13.3-inch screen using AutoCAD 2020 software. It was divided into four groups according to the vertical facial pattern (SN / G-Gn): Low, Medium Low, Medium High and High; and the thickness of the soft tissues of the lips, was measured in four levels; the upper lip base thickness, upper lip thickness, lower lip thickness and lower lip base thickness. For the statistical analysis, the Kruskal-wallis test and the Tukey post-hoc test were used, with a confidence level of 95% (p <0.05). Results: Significant differences were observed in the thickness of the base of the upper lip with the facial type (p = 0.005) showed a low and negative correlation (Spearman's Rho -0.177). According to sex, only for women was significant in the lower lip base thickness (p = 0.047). Conclusions: The thickness of the base of the upper lip decreases as the vertical facial pattern increases, on the other hand, in women the thickness of the base of the lower lip increases as the facial pattern increases. 

Key words: Lip; Cephalometry; Face; Esthetics