Endodontics: ULTRASONIC and profile

Monday, 25 July 2011

ULTRASONIC and profile


ULTRASONIC

Ø  Oscillating - side to side movement.
Ø  Vibrations above the audible range of perception.
Ø  Vibrations at very high level: 20 – 25kHz.
Ø  produces vibratory movements then transferred to the instrument.

PROFILE

0.06 PROFILE:
Ø  Taper 6% , No  15 to 40 , lengths 21 mm and 25 mm .

0.04 PROFILE:
Ø  Taper 4%, No 15 to 40, lengths 21mm, 25mm and 31mm. 




Ø  Designed for continuous rotation at 150-350 rpm in a contra angle hand piece
Ø  A modified tip without transition angle does not cut but guides the file. 





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