Which of the following is not an appropriate irrigation solution in endodontic procedures?

In endodontic procedures, the use of irrigation solutions is critical for effective cleaning and disinfection of the root canal system. Sodium hypochlorite is widely used because of its excellent antibacterial properties and ability to dissolve organic tissue. Chlorhexidine is another effective irrigant that provides antimicrobial action, although it does not dissolve tissue like sodium hypochlorite. EDTA (ethylenediaminetetraacetic acid) serves a different purpose, primarily aiding in the removal of inorganic material and helping to lubricate the canal space.

Alcohol, on the other hand, is not considered an appropriate irrigation solution in endodontics. While alcohol has some antiseptic properties, it does not possess the necessary characteristics needed for effective root canal cleaning and may even contribute to complications such as tissue irritation or adverse reactions. In endodontic treatment, it is crucial to utilize solutions that promote disinfection and the safe removal of debris, making alcohol unsuitable for this purpose.