The device that intensifies or increases the effect of radiation and reduces the exposure time needed when taking an extraoral radiograph is an intensifying screen. Here's why:
1. Function: Intensifying screens are used in conjunction with X-ray films to reduce the amount of radiation exposure required to produce a diagnostic image. They work by converting X-ray energy into visible light, which in turn exposes the film more efficiently.
2. Advantages: By using intensifying screens, the amount of radiation needed for imaging is decreased, which is beneficial for patient safety as it minimizes their exposure to radiation.
3. Exposure Time: Since intensifying screens enhance the effect of the radiation, the exposure time required to capture a clear radiographic image is reduced, making the process faster and more efficient.
4. Comparisons: In comparison to nonscreen films, which do not utilize intensifying screens, the use of screens allows for a significant reduction in radiation exposure and exposure time while maintaining image quality.
In summary, when taking extraoral radiographs, the device that intensifies the radiation effect and decreases the exposure time needed is an intensifying screen.
