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Como crear un arco de intrusión en ortodoncia para lograr una sonrisa perfecta
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El arco utilitario de intrusión de Ricketts es probablemente el arco más usado para intrusiones de los cuatro incisivos, para confeccionarlo se utiliza elgiloyazul 16x16 y se coloca en brackets con un slot 18. Al preparar el arcoutilitario lo vamos a adecuar a nuestra plantilla de arcos pentamórficos, siguiendo la misma curvatura.
Cuando se instale en el paciente el segmento anterior del arco utilitario me debe quedar paralelo a la línea bipupilar.
Tenga en cuenta que la cantidad de energía a incorporar es de 75 Newton medido con el dinamómetro. La fuerza se aplica lejos del centro de resistencia por lo que los incisivos se van a inclinar hacia vestibular así que es necesario hacer compensaciones.
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