Periodic testing for an X-ray source is performed by dental staff how often?

• A. Monthly
• B. Yearly
• C. Every 2 years
• D. Daily

Answer: (B)

Regular quality assurance for a dental X-ray unit includes both frequent, simple checks and less frequent, more thorough tests. Daily and monthly tasks keep a close eye on immediate performance, but the more comprehensive verification of the X-ray beam’s output, kVp accuracy, beam quality, and alignment is done on a yearly cycle. This yearly interval is chosen because the X-ray tube and associated components can drift slowly over time due to wear and aging, so an annual check catches gradual changes that could affect patient dose and image quality without interrupting daily operations. Dental staff typically perform the routine periodic testing as part of the clinic’s QA program, often with service support for the more detailed measurements when needed. Sticking to an annual schedule helps ensure safety and consistency in imaging while balancing practicality and resource use.