Objetivo: Analizar a largo plazo los tejidos blandos faciales post expansión rápida maxilar con soporte dentario (ERM-SD) y soporte óseo (ERM-SO). Métodos: Se evaluaron 160 registros tomográficos de 3 grupos: ERM-SO, ERM-SD y CONTROL, en 3 tiempos: T0 (pre-tratamiento), T1 (pos-tratamiento inmediato), T2 (2 años pos-tratamiento); se midieron parámetros: convexidad total, convexidad facial, ángulo nasolabial, ángulo mentolabial, altura facial, altura nasal, largo nasal, altura del labio superior, altura del bermellón superior, altura del labio inferior, altura del bermellón inferior, proyección del mentón, distancia interocular, distancia intercomisural, ancho intercomisural, ancho de la base alar y ancho alar. Se analizaron los resultados con estadística descriptiva, se evaluó el porcentaje de cambio, comparamos las medias obtenidas por pares (t student) y una comparación intergrupos (ANOVA y pos-hoc de Tukey). Resultados: A largo plazo (T2-T0) diferencias estadísticamente significativas para el grupo ERM-SO en convexidad total, altura facial, altura del labio superior, altura del labio inferior, distancia intercomisural, ancho de la base alar, el grupo ERM-SD para convexidad total, altura facial, bermellón superior, altura de labio inferior, bermellón inferior, ancho de la base alar. No se observaron diferencias estadísticamente significativas entre grupos ERM-SO, ERM-SD y grupo CONTROL a largo plazo. Conclusión: La ERM con soporte dental u óseo generan un aumento significativo en el ancho de la base nasal que se mantiene a largo plazo, pero estos efectos faciales no son diferentes entre los tipos de ERM y el grupo control.Objective: To analyze long-term facial soft tissues post-ERM with dental support (ERM-SD) and bone support (ERM-SO).Methods: 160 tomographic records from 3 groups were evaluated: ERM-SO, ERM-SD and CONTROL, at 3 times: T0 (pre-treatment), T1 (immediate post-treatment), T2 (2 years post-treatment); Parameters were measured: total convexity, facial convexity, nasolabial angle, mentolabial angle, facial height, nasal height, nasal length, upper lip height, upper vermilion height, lower lip height, lower vermilion height, chin projection, distance interocular, intercommissural distance, intercommissural width, alar base width and alar width. The results were analyzed with descriptive statistics, the percentage of change was evaluated, we compared the means obtained in pairs (t student) and an intergroup comparison (ANOVA and Tukey's post-hoc). Results: Long-term (T2-T0) statistically significant differences were found for the ERM-SO group in total convexity, facial height, upper lip height, lower lip height, intercommissural distance, width of the alar base, the ERM group -SD for total convexity, facial height, upper vermilion, lower lip height, lower vermilion, alar base width. No statistical differences were observed between ERM-SO, ERM-SD and CONTROL groups in the long term. Conclusion: ERM with bone or dental support generates a significant increase in the width of the nasal base that is maintained in the long term, but these facial effects are not different between the types of ERM and the control group.