The EndoUltra is a device dedicated to activation, to be used after the shaping. It has been specifically designed for that purpose, always at your fingertips, and does not require any specific settings. Frequency is pre-set, you only have to switch on. The tip has to be bent to easily access to posterior teeth and the taper is adapted to the canal’s one after the shaping. A multi-functions ultrasounds generator requires the right power to be set before use, and adapted the tip itself. Any generator provides with pre-defined power setting for activation. Setting too much power may damage the tooth structure.