A long, slender and narrow-walled apical cavity can be achieved with the use of ultrasonic tips. With this procedure, small amounts of dental tissue are lost, and thus, perforation risks decrease and placement of retrograde material is simplified.
Con la utilización de puntas de ultrasonido se logra preparar una cavidad apical estrecha, larga, de paredes paralelas, sacrificando poco tejido dentario, disminuyendo el riesgo de perforaciones radiculares y facilitando la colocación del material retrógrado.