Which film speed is recommended for intraoral radiographs?

• A. G Speed
• B. D Speed (Ultra Speed) Or Faster
• C. A Speed
• D. B Speed

Answer: (B)

Faster film speeds mean you need less exposure to produce a usable image, which lowers the patient’s radiation dose. For intraoral radiographs, the goal is to minimize dose while still getting enough detail to diagnose, so you choose the fastest film speed available. D-speed, also called Ultra Speed, or any speed faster, fits that goal best among common options because it requires the least exposure for a diagnostic image. The trade-off is a slight decrease in sharpness compared with the slowest speeds, but modern D-speed films still provide adequate detail for routine intraoral work while keeping dose low. Faster speeds like D-speed are preferred over slower speeds, which would require more exposure.