Occupational radiation exposure from handheld dental x-ray devices: A quantitative dosimetric study

Area of Science:

• Radiological Physics
• Occupational Health
• Dental Imaging Technology

Background:

• Handheld dental radiographic devices pose potential occupational radiation exposure risks.
• Quantitative evaluation of operator radiation dose is necessary for safety.

Purpose of the Study:

• To quantitatively assess occupational radiation doses from three handheld dental X-ray devices (UAX-01, HyperLight-G, EzRay Air P).
• To evaluate radiation exposure to critical anatomical regions of dental operators.

Main Methods:

• Experimental dosimetric study using TLD-100 dosimeters on a mannequin and phantom.
• Measurements taken at orbital, neck, chest, finger, and pelvic surfaces, with and without shielding.
• In vivo clinical dose evaluation for UAX-01 over two months.

Main Results:

• UAX-01 showed the highest mean unshielded exposure across most anatomical sites.
• Protective shielding significantly reduced radiation exposure (32.25%-66.90%) in most cases.
• In vivo monitoring indicated substantial finger and chest exposure for dentists using UAX-01.

Conclusions:

• Handheld dental X-ray devices, particularly UAX-01, can exceed occupational dose limits without consistent protection.
• Implementing shielding, proper positioning, and sensor holders is vital for operator safety.
• Policymakers should enforce ALARA principles and routine occupational dose monitoring.