For an endodontic treatment to be successful, the pulp tissue and dentin debris from the root canal system must be removed, and the root canal system must also be chemically and mechanically cleaned. The solutions most commonly used in endodontic therapy are: hypochlorite, citric acid, ethylenediamine tetraacetic acid (EDTA), saline or distilled water, and alcohol. Irrigation solutions must eliminate microorganisms, affect both organic and inorganic matter, remove the smeared layer and stimulate the healing process. During the shaping of the canal space without irrigants, the canal contents are evacuated to varying degrees, and some are pushed apically and towards the walls, resulting in the creation of a dense contaminant layer. As a result, irrigation is quite important.
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