Environ Health Toxicol.  2018 Dec;33(4):e2018017. 10.5620/eht.e2018017.

Health effects from exposure to dental diagnostic X-ray

Affiliations
  • 1Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea. kimhaey@korea.ac.kr
  • 2Expert Group on Health Promotion for Seoul Metropolitan Government, Seoul, Korea.
  • 3Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea.
  • 4Department of Health Policy and Management, College of Health Science, Korea University, Seoul, Korea.

Abstract

The purpose of this review is to summarize the results of studies on of the association between exposure to dental X-rays and health risk. To perform the systematic review, We searched the PUBMED, EMBASE, and MEDLINE databases for papers published before December 15, 2016. A total of 2 158 studies, excluding duplicate studies, were found. Two reviewers independently evaluated the eligibility of each study. The final 21 studies were selected after application of exclusion criteria. In terms of health outcomes, there were 10 studies about brain tumors, 5 about thyroid cancer, 3 about tumors of head and neck areas, and 3 related to systemic health. In brain tumor studies, the association between dental X-ray exposure and meningioma was statistically significant in 5 of the 7 studies. In 4 of the 5 thyroid-related studies, there was a significant correlation with dental diagnostic X-rays. In studies on head and neck areas, tumors included laryngeal, parotid gland, and salivary gland cancers. There was also a statistically significant correlation between full-mouth X-rays and salivary gland cancer, but not parotid gland cancer. Health outcomes such as leukemia, low birth weight, cataracts, and thumb carcinomas were also reported. In a few studies examining health effects related to dental X-ray exposure, possibly increased risks of meningioma and thyroid cancer were suggested. More studies with a large population and prospective design are needed to elaborate these associations further.

Keyword

Dental radiography; Health; Radiation exposure

MeSH Terms

Brain Neoplasms
Cataract
Head
Humans
Infant, Low Birth Weight
Infant, Newborn
Leukemia
Meningioma
Neck
Parotid Gland
Prospective Studies
Radiation Exposure
Radiography*
Radiography, Dental
Salivary Gland Neoplasms
Thumb
Thyroid Neoplasms
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