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Un estudio de tomografía computarizada de haz de cono longitudinal de cambios en el canal mandibular durante el
Stephanie H Chen1, Normand Boucher1, Chun-Hsi Chung1
1Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Orthodontics & craniofacial research
|September 4, 2025
Resumen
El canal mandibular
Área de la Ciencia:
- Odontología
- La ortodoncia
- La anatomía
Sus antecedentes:
- El canal mandibular es tradicionalmente visto como una referencia estable en imágenes 2D.
- Su estabilidad en la dimensión transversal durante el crecimiento no se comprende bien.
Objetivo del estudio:
- Investigar los cambios dimensionales y posicionales del canal mandibular durante el crecimiento.
- Para evaluar la fiabilidad del canal mandibular como estructura de referencia en 3D.
Principales métodos:
- Estudio longitudinal retrospectivo mediante tomografía computarizada por haz cónico (CBCT).
- Superposición 3D de escaneos de dos puntos de tiempo en 17 sujetos (mezclado a la dentición permanente temprana).
- Evaluación de las dimensiones de los canales, la distancia entre canales y la distancia entre canales y mandíbulas.
Principales resultados:
- Las dimensiones del canal mandibular mostraron estabilidad posterior pero aumentaron anteriormente.
- Se produjo un desplazamiento lateral, pero no como un simple movimiento corporal o en forma de V.
- La posición del canal con respecto al cuerpo mandibular cambiaba continuamente.
Conclusiones:
- Los cambios significativos en el desarrollo de las dimensiones del canal mandibular y la posición lateral ocurren durante la dentición mixta a temprana.
- Estos hallazgos desafían la suposición de la estabilidad absoluta del canal mandibular.
- Implicaciones para el uso del canal mandibular como referencia fija en los estudios longitudinales y la planificación del tratamiento.
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