Effect of Separated Endodontic Instruments Type on Removal Success by Microsonic Technique -In Vitro Study-

The use of Nickel-Titanium rotary instruments have been increasing in the last two decades. But the probability of fracture is still the most important hindrance that confuse the practitioners. And many clinicians claim that the removal process is very difficult and often irretrievable. When compared with stainless steel instruments, hence this study aims to compare between the two types effect of endodontic instruments on the success of microsonic technique in removing or bypassing it, and the degree of difficulty.