Ultrasonics: An Essential Endodontic Tool - A Review

In modern endodontics ultrasonics plays an important role for the success of endodontic therapy. Ultrasound is sound energy having frequency in the range of more than 20000 Hz. Ultrasonics has recently been used in endodontics for various steps like, modifying root canal access like removal of pulp stones and canal calcifications, activation of irrigating solutions in root canals, ultrasonic removal of posts during retreatment, removal of broken instruments and obstructions from canals, application of sealers to canal walls; condensation of gutta-percha during canal obturation, root end preparation during periapical surgery.