Year : 2012  |  Volume : 4  |  Issue : 2  |  Page : 124-128

Biomonitoring of genotoxic and cytotoxic effects of gingival epithelial cells exposed to digital panoramic radiography

1 Department of Oral Medicine and Radiology, Oxford Dental College and Hospital, Bangalore, Karnataka, India
2 Department of Oral Medicine and Radiology, Vishnu Dental College and Hospital, Bhimavaram, Andhra Pradesh, India
3 Department of Oral and Maxillofacial Surgery, AME'S Dental College Hospital and Research Centre, Raichur, Karnataka, India

Correspondence Address:
Yadavalli Guruprasad
Department of Oral and Maxillofacial Surgery, AME'S Dental College Hospital and Research Centre, Raichur - 584 103, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0975-8844.106207

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Objective: The aim of this study was to evaluate genotoxic and cytotoxic effects of low level ionizing radiation used in digital panoramic radiography on gingival epithelial cells. Materials and Methods: We included 50 healthy individuals advised for digital panoramic radiography for diagnostic purpose were included in this study. Demographic data and personal history of all subjects were recorded in a proforma before the examination. Gingival epithelial cells were obtained by gentle scraping with a modified cytobrush immediately before X-ray exposure and 10 ± 2 days later. Cytological preparations were stained according to the Feulgen/fast green method and analyzed under a light microscope. Micronuclei and degenerative nuclear alterations (pyknosis, karyolysis, karyorrhexis and condensed chromatin) were scored. Results: The frequency of formation of micronuclei was not significant with regard to age, gender and after exposure to digital panoramic radiography ( P = 0.276). However this study showed significant increase in the frequencies of nuclear alterations like karyorrhexis, pyknosis, condensed chromatin, karyolysis and indicative of cell death ( P < 0.001). Conclusion: Panoramic radiographic examination does not induce genotoxic effect like micronuclei, but it does induce cytotoxic effects leading to cell death.

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