What moisture control technique is the most successful at preventing tooth contamination during endodontic treatment?

The most successful moisture control technique for preventing tooth contamination during endodontic treatment is the rubber dam. This method effectively isolates the tooth being treated from the rest of the oral cavity, minimizing saliva and other contaminants from interfering with the procedure. The rubber dam creates a dry operating field, which is crucial for the success of endodontic treatment, as even minimal moisture can compromise the bond of endodontic materials and lead to treatment failure.

Using a rubber dam allows for better visibility and access to the tooth, which is essential for accurate cleaning, shaping, and filling of the root canal system. It also protects the patient from inhaling or swallowing instruments or materials used during the procedure, enhancing safety.

Other moisture control techniques, such as cotton wool rolls, high-speed suction, and low-speed suction, do not provide the same level of isolation and control over moisture as a rubber dam. While these methods can assist in managing moisture to some extent, they are not as reliable or effective as the rubber dam in maintaining a sterile environment necessary for successful endodontic treatment.