Publicación: Comparacion tridimensional de la sínfisis mandibular de pacientes adultos mesofaciales con maloclusiones clase II y III esqueletal utilizando la tomografía axial computarizada : estudio observacional
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2025
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Santo Domingo: Universidad Iberoamericana (UNIBE)
Resumen
[Español] La sínfisis mandibular es esencial en la estabilidad y funcionalidad del complejo maxilofacial, siendo relevante en el diagnóstico y tratamiento ortodóncico. Este estudio tuvo como objetivo comparar tridimensionalmente las características de la sínfisis mandibular en pacientes adultos mesofaciales con maloclusiones Clase II y Clase III esqueletales, utilizando Tomografía Axial Computarizada (TAC). Fue un estudio observacional con una muestra de 41 pacientes (26 Clase II, 15 Clase III). Se evaluaron variables de grosor, altura, densidad, y presencia de dehiscencias y fenestraciones. Para clasificar las maloclusiones esqueletales se generaron imágenes bidimensionales con la herramienta “cefálica virtual” del Software Planmeca realizando trazados cefalométricos en el software Dolphin Imaging 9.0. Posteriormente las medidas tridimensionales fueron efectuadas en Planmeca Romexis (p > 0.05). Los resultados mostraron diferencias no significativas en los parámetros analizados. Pacientes Clase II presentaron una altura mayor (p = 0.0931) y un grosor reducido, mientras los Clase III tuvieron mayor grosor de la sínfisis mandibular (p=0.2680). La densidad fue mayor en Clase II (p = 0.4325) así como, las fenestraciones (p= 0.619). Las dehiscencias fueron más extensas en Clase III (p=0.975). En conclusión, fue confirmada la hipótesis nula estableciendo que no existen diferencias significativas en las dimensiones tridimensionales de la sínfisis mandibular entre ambos grupos.
[English] The mandibular symphysis is essential for the stability and functionality of the maxillofacial complex, being relevant in orthodontic diagnosis and treatment. This study aimed to compare the three-dimensional characteristics of the mandibular symphysis in mesofacial adult patients with Class II and Class III skeletal malocclusions using Computed Tomography (CT). This observational study included a sample of 41 patients (26 Class II, 15 Class III). Variables such as thickness, height, density, and the presence of dehiscences and fenestrations were evaluated. To classify skeletal malocclusions, two-dimensional images were generated using the "virtual cephalometry" tool of Planmeca software, followed by cephalometric tracings in Dolphin Imaging 9.0. Subsequently, threedimensional measurements were performed using Planmeca Romexis (p > 0.05). The results showed no statistically significant differences in the parameters analyzed. Class II patients presented greater height (p = 0.0931) and reduced thickness, while Class III patients showed greater mandibular symphysis thickness (p = 0.2680). Density and fenestrations were higher in Class II (p = 0.4325, p = 0.619), while dehiscences were more extensive in Class III (p = 0.975). In conclusion, the null hypothesis was confirmed, indicating no significant differences in the three-dimensional dimensions of the mandibular symphysis between the two groups.
[English] The mandibular symphysis is essential for the stability and functionality of the maxillofacial complex, being relevant in orthodontic diagnosis and treatment. This study aimed to compare the three-dimensional characteristics of the mandibular symphysis in mesofacial adult patients with Class II and Class III skeletal malocclusions using Computed Tomography (CT). This observational study included a sample of 41 patients (26 Class II, 15 Class III). Variables such as thickness, height, density, and the presence of dehiscences and fenestrations were evaluated. To classify skeletal malocclusions, two-dimensional images were generated using the "virtual cephalometry" tool of Planmeca software, followed by cephalometric tracings in Dolphin Imaging 9.0. Subsequently, threedimensional measurements were performed using Planmeca Romexis (p > 0.05). The results showed no statistically significant differences in the parameters analyzed. Class II patients presented greater height (p = 0.0931) and reduced thickness, while Class III patients showed greater mandibular symphysis thickness (p = 0.2680). Density and fenestrations were higher in Class II (p = 0.4325, p = 0.619), while dehiscences were more extensive in Class III (p = 0.975). In conclusion, the null hypothesis was confirmed, indicating no significant differences in the three-dimensional dimensions of the mandibular symphysis between the two groups.
Citación
Apellido, Nombre del autor (año). Título del trabajo. [Trabajo de postgrado, Especialidad en Ortopedia Maxilar y Ortodoncia]. Santo Domingo: Universidad Iberoamericana (UNIBE). Recuperado de:

