Which of the following is used in endodontic procedures?

The use of a chairside darkroom is primarily associated with the handling and processing of radiographs, which are essential in various dental procedures, including endodontics (root canal treatment). While the darkroom itself may not be directly involved in performing the endodontic procedures, it plays an essential supportive role by allowing for the development of X-rays that help diagnose the condition of the tooth's pulp and periapical tissues accurately.

In endodontics, precise diagnostics are critical for successful treatment, as the dentist needs to evaluate the health of the pulp and surrounding structures. Digital radiography, while more common today, still keeps the traditional darkroom skills relevant for certain practices.

The other options do not fit within the primary tools or environments necessary for endodontic procedures. An electric lab handpiece is generally used for laboratory tasks rather than directly for endodontic therapy. High-volume oral evacuators, while useful in various procedures for maintaining a clear field, do not specifically contribute to the endodontic process itself. Impression trays are used for taking impressions for various dental applications, but they are not typically associated with endodontics directly.

Thus, the function of a chairside darkroom, while indirectly related, highlights the importance of radiographic