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Thyroid Collars in Dental Radiology: 2021 Update.

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Patient thyroid shielding in dental radiology has seen progress since 2013, but further research is needed. Harmonizing guidelines for thyroid collars and surveying current practices are recommended to minimize radiation exposure.

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Area of Science:

  • Radiology
  • Dental Imaging
  • Radiation Protection

Background:

  • The American Thyroid Association (ATA) issued guidelines on thyroid shielding in 2013.
  • The National Council on Radiation Protection and Measurement (NCRP) recently updated its recommendations for dental and maxillofacial imaging.
  • This review assesses advancements in patient thyroid shielding since the 2013 ATA statement.

Purpose of the Study:

  • To review progress in patient thyroid shielding in dental radiology since the 2013 ATA policy statement.
  • To identify areas for further research and practice improvement in thyroid radiation protection during dental imaging.

Main Methods:

  • A systematic literature search was conducted using PubMed with keywords related to thyroid shielding in dental radiology.
  • The search was expanded by reviewing cited references and using Web of Science to identify relevant publications.
  • Publications from 2013 to the present were analyzed.

Main Results:

  • Several quantitative studies on dental radiographic instrumentation and practice have been published.
  • While progress has been made, opportunities remain to further minimize radiation exposure to the thyroid gland.
  • Specific areas for future research and guideline development have been identified.

Conclusions:

  • Continued research and updated guidelines are necessary to optimize thyroid shielding in dental radiology.
  • Harmonizing guidelines for thyroid collar use based on recent evidence is recommended.
  • A comprehensive survey of current dental radiological practices is needed to inform future recommendations.