All rotary Ni-Ti systems are excellent in creating a crown-down effect, but they do not irrigate or cleanse the lateral canals that are breeding ground for bacteria, which in effect increase post-op pain and inevitable retreatment. The MM1500+, with its cavitation effect, effectively cleanses the lateral canals and greatly reduces post-op pain and patient recalls. It is a must-have complement to all Ni-Ti rotary systems because: (1) it requires no installation; (2) it offers great visibility and accessibility; (3) it removes the smear layer; (4) it facilitates safe and rapid canal flaring and/or debridement; (5) it offers superior cleansing with the irrigation and cavitation effect; and (6) it is user-friendly and patient comforting. For more information, call (800) 221-0750 or visit medidenta.com.