Percepción del cambio facial en el avance mandibular en visión frontal y tres cuartos

Abstract

Introduction: patients presenting class II malocclusion with mandibular retrognathism may be socially affected to the point of developing personal complexes. Objetive: to evaluate the esthetics of the frontal and ¾ front vision of Class II patients at rest and simulating mandibular advancement. Methods: five patients with class II malocclusion were selected and photographs were taken with and without mandibular advancement in three-quarter and front position. Using the visual analog scale, the facial esthetics of the lower facial third of the face was evaluated from 0 (very unaesthetic) to 10 (very esthetic). The respondents selected were 17 professors and 42 students of the master's degree in orthodontics of the Universidad X El Sabio and 20 orthodontic patients. Statistical analysis:wo-factor ANOVA analyses with repeated measures in one were carried out using the General Linear Model (GLM) procedure to study the effect of intra-subject factors (type of photo: normal and modified) and inter-subject factors (sex, nationality, person and students) and their interaction on the evaluation. Results: photos in three-quarter vision with mandibular advancement presented a higher score than photos without mandibular advancement. There was no significant difference in the improvement of esthetic perception in the three groups evaluated with frontal and three quarter pictures (p = 0.059). Conclusion: mandibular advancement simulation in class II patients only improved aesthetic perception in ¾ photos but got worse in a frontal view.