Abstract
Background:The effect of inflammation on pathogenesis and biological behavior of odontogenic keratocyst (OKC) and dentigerous cyst (DC) is not completely understood. Hence, we aimed to analyze the effect of inflammation on biological behavior of OKC and DC using a proliferative and anti-apoptotic marker, i.e., proliferative cellular nuclear antigen (PCNA) and Bcl-2, respectively.Materials and Methods:Immunohistochemical staining was performed using anti-PCNA and Bcl-2 antibody in 10 cases each of classical OKC, inflamed OKC and classical DC and inflamed DC.Results:Inflamed OKC and DC showed a significant increase in PCNA expression and decrease in Bcl-2 expression when compared with non-inflamed cyst. Correlation between inflammation and proliferative and anti-apoptotic activity was found to be statistically non-significant.Conclusion:Inflammation is responsible for change in behavior of neoplastic epithelium of OKC and hence should be treated meticulously, whereas in DC it is responsible for changes in the epithelial lining.
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