How often should panoramic and cephalometric units be maintained?

• A. Annually
• B. Quarterly
• C. Monthly
• D. Never

Answer: (A)

Regular professional preventive maintenance for panoramic and cephalometric units is done on a yearly basis to protect image quality and patient safety. These are complex machines with X-ray output, exposure timing, beam alignment, and moving mechanical parts that can drift over time. A yearly service by a qualified technician checks and calibrates the X-ray output and timer accuracy, verifies correct beam geometry and focal trough alignment, inspects mechanical wear and safety interlocks, updates software if needed, and performs dosimetry checks to ensure the radiation dose stays within safe limits. While daily or weekly quality checks in a clinic are important to catch obvious issues and maintain operation, they don’t replace a full professional maintenance visit, which is necessary to certify the system remains reliable, compliant, and within specification. More frequent maintenance would be unnecessary and costly given how slowly performance can drift, and infrequent care could let problems go unnoticed until they impact image quality or safety.