Comparación del análisis de McNamara en adultos con siluetas atractivas

Abstract

Objective: To compare McNamara's analysis of adults with attractive silhouettes. Materials and methods: It was an observational, cross-sectional study with a relational level in teleradiographies. Cephalometric tracing was performed utilizing AutoCAD 2020 software in 248 teleradiographies; 80 met the selection criteria, and the soft tissue profile contour was traced in Adobe Photoshop 2020 software. A group of students observed every teleradiography for 30 seconds, and they considered 23 profiles attractive; this was compared to James McNamara standards. Variables with a normal distribution were tested using the Student t-test, and the Wilcoxon signed-rank test was employed for those that did not have a normal distribution. The decision was significant, considering 5% (p<0.05). Results: When comparing the reference standard with the attractive silhouettes, it presented a greater angle of the mandibular plane and the upper incisor against the vertical of point A, a smaller effective mandibular length, a smaller effective maxillary length, and a smaller size of the posterior pharynx. In contrast, Nasion perpendicular-point A, anteroinferior facial height, facial axis angle, and lower incisor against A- Pogonion remained within the set standards. Conclusions: Differences with McNamara's analysis were determined in lower maxillary and mandibular length, predominance of the dolichofacial biotype, more significant protrusion of the upper incisor, and smaller size of the upper airway; thus, new standards are necessary to be established based on the social perception of Cuenca's population.