Which step is NOT part of preparing a dental operatory?

Taking patient radiographs is not considered a part of preparing a dental operatory. Instead, this activity is performed during the patient examination or treatment phase after the operatory has been prepared. Preparing a dental operatory involves ensuring all surfaces are disinfected, instruments are set up properly for the procedure, and materials needed for the treatment are ready and accessible. These steps are crucial for maintaining a clean and efficient working environment that adheres to infection control protocols.

By focusing on how the operatory is set up, including proper disinfection and organization of instruments and materials, the dental team can ensure that they are ready to provide safe and effective care. Taking radiographs, however, involves separate protocols and is not part of the setup phase, thus clarifying why this option stands apart from the others.