International Journal of Clinical Pediatric Dentistry

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VOLUME 15 , ISSUE S1 ( Special issue-1 (Pediatr Endodont), 2022 ) > List of Articles


Biomonitoring of Genotoxic Effect in Children Exposed to Dental Radiographs during Pulpectomy Procedure—BMCyt Assay

Yoshang Julu, Chikkanarasaiah Nagarathna

Keywords : Buccal micronucleus cytome assay, Fluorescence microscope, Intraoral periapical radiography, Micronuclei, Radio visiography

Citation Information :

DOI: 10.5005/jp-journals-10005-2135

License: CC BY-NC 4.0

Published Online: 28-02-2022

Copyright Statement:  Copyright © 2022; The Author(s).


Background: Radiography is one of the most valuable diagnostic tools used in comprehensive dental care. Radiation from dental radiographs was thought to cause cytogenetic changes and its plausible effects can remain for some hours, months, or generations especially in children. Aims and objectives: To evaluate and compare the possible genotoxic effect of routinely used intraoral periapical radiographic exposure and radiovisiographic exposure in exfoliated epithelial cells as measured by the formation of micronuclei during single visit pulpectomy procedure using Buccal Micronucleus Cytome (BMCyt) assay in children. Materials and methods: Study comprised 60 healthy children who has undergone either intraoral periapical radiography (IOPAR; group 1, n = 30) or radiovisiography (RVG; group 2, n = 30) during various steps of single visit pulpectomy procedure. Cytological smears were taken from the buccal mucosa immediately before the X-ray exposure and 10 ± 2 days after exposure. The cells were stained with Feulgen and evaluated for micronuclei by scoring 1,000 cells per sample. Results: The genotoxic effect of radiation exposure from intraoral periapical radiography higher than that of RVG showing significant increase in micronucleus (MN) formation. Conclusion: The X-ray radiation emitted during IOPAR or RVG does induce genotoxic changes in the form of increased frequency of micronuclei. So, great care and standard protocol should be followed to advice radiographs if necessary and reduce the cumulated biological effects of radiation exposure. Keynote: Taking into account the strong evidence of a relationship between DNA damage and carcinogenesis and the extensive application of intraoral radiographs in pediatric dentistry, it would be useful to know to what extent these dental X-rays cause genotoxic effects resulting in DNA damage on oral mucosa.

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