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Determining the radiation exposure from visual display terminals used in dentistry
1Department of Diagnostic Services, University of Pittsburg School of Dental Medicine, PA 15261.
Journal (Canadian Dental Association)
|February 1, 1991
Summary
This study assessed radiation from computers in dental offices. Results show that all tested video display terminals (VDTs) emitted negligible radiation, meeting safety regulations.
Area of Science:
- Dentistry
- Radiation Safety
- Occupational Health
Background:
- Computers are increasingly used in dental practices for administrative, didactic, and research purposes.
- Concerns exist regarding radiation exposure for dental staff, particularly women of childbearing age, working with computers.
- Video Display Terminals (VDTs) are common in dental settings.
Purpose of the Study:
- To compare radiation emission levels from personal computers commonly found in dental practices and teaching institutions.
- To evaluate the safety of VDTs used by dental professionals.
- To assess potential occupational radiation exposure risks in dentistry.
Main Methods:
- Thermoluminescent dosimeter pellets made of lithium fluoride were used for measurement.
- Pellets were attached directly to the surface of 10 VDTs.
- VDTs of varying ages and from different manufacturers were included in the study.
Main Results:
- All 10 tested VDTs emitted radiation.
- The measured radiation levels were negligible.
- All machines complied with United States Nuclear Regulatory Commission (USNRC) safety regulations.
Conclusions:
- Personal computers and VDTs commonly used in dental practices and teaching institutions emit negligible amounts of radiation.
- The radiation emitted by these devices meets established safety standards.
- Dental staff, including women of childbearing age, are unlikely to face significant radiation exposure from VDT use in these settings.