During the last several years, endodontics has progressed to the point where treatment has become less traumatic for the patient and less stressful for the dentist. While the use of nickel-titanium rotary instruments has allowed us to gain time during endo-dontic treatment, it can tempt us to neglect one of the main objectives of endodontics, that is the cleaning, or the chemical preparation, of the root canal system—we need to be clear on whether we are treating a canal or a root canal system. The main goal of root canal treatment is to completely eliminate the various components of the pulpal tissue, calcification and bacteria; to place a hermetic seal to prevent infection or reinfection; and to promote healing of the surrounding tissues, if needed...
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