Final answer:
The portion of the x-ray room that is protected from scatter radiation and is safe during exposures is called the control booth. It is essential for reducing occupational exposure to radiation and protects the dental technician from unnecessary exposure.
Step-by-step explanation:
The portion of the x-ray room that is protected from scatter radiation and is safe during exposures is called the control booth. The control booth is an enclosure where the dental technician stands to operate the x-ray machine and control the exposure settings. It is typically lined with lead and includes a lead glass window to shield the technician from radiation. According to Figure 32.7 and the information provided, the control booth is essential for reducing occupational exposure to radiation. By standing a few meters away behind the lead-lined door with a lead glass window, the technician is protected from scatter radiation and prevents unnecessary exposure.