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ORIGINAL ARTICLE
Year : 2015  |  Volume : 11  |  Issue : 1  |  Page : 129-135

Oral rinse-based cytology and conventional exfoliative cytology: A comparative study


1 Department of Oral Pathology and Microbiology, K V G Dental College and Hospital, Sullia, India
2 Department of Oral Pathology and Microbiology, A B Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India
3 Department of Periodontics, K V G Dental College and Hospital, Sullia, India

Correspondence Address:
Shaila Mulki
Department of Oral Pathology and Microbiology, K V G Dental College and Hospital, Sullia
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-1482.137910

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Context: Simple screening test for resource-challenged areas. Aims: To compare specimen adequacy and diagnostic agreement between oral rinse-based smears and conventional smears in oral cancer, oral leukoplakia, and normal controls. Settings and Design: Twenty-five histologically confirmed cases of oral cancer, 29 clinically diagnosed cases of oral leukoplakia, and 54 normal controls were subjected to the oral rub-and-rinse technique and the conventional exfoliative cytology. Patients and Methods: Smears were consequently stained with the Papanicolaou (PAP) stain and were examined independently by two different cytopathologists in a double-blind fashion. The results were classified as: Negative, atypical, positive, and unsatisfactory. Furthermore, they were compared, to assess the sample adequacy, cellular distribution, staining, leucocytes/inflammation and cellular clarity in both the smears. Statistical Analysis Used: Chi square test and Wilcoxon-matched pairs signed rank test (P ≤ 0.05). Results: Among the cancer cases, 84% showed positive, 8% atypical, and 8% unsatisfactory, after using the conventional technique, whereas, the oral rinse technique showed 80% positive, 16% atypical, and 4% unsatisfactory cases. The conventional technique showed 44.82, 37.93, and 6.89% and the oral rinse technique showed 48.27, 31.03, and 20.68% negative, positive, and atypical cases, respectively, among the leukoplakia cases. Among the normal controls, 9.26 and 90.74% and with the oral rinse technique 3.70 and 96.29% showed atypical and negative cases with the conventional technique. Sample adequacy and cellular clarity showed a statistically significant difference between both techniques. Conclusions: Both smears were diagnostically reliable, however, the oral rinse-based method showed an overall improvement in sample adequacy and cellular clarity.


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