Which technique involves the use of a dental dam?

The technique that involves the use of a dental dam is endodontic treatment. A dental dam is a thin, flexible sheet made of latex or non-latex material that is used to isolate a tooth or several teeth during dental procedures. In endodontic treatment, commonly known as a root canal, the dentist removes infected tissue from inside the tooth. The use of a dental dam plays a critical role in this process as it helps to keep the treatment area dry and free from saliva, ensuring a sterile environment which is essential for the success of the procedure. This isolation not only allows for better visibility and access but also protects the patient's mouth from any potential debris that may be generated during the treatment.