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Evaluation of salivary nitric oxide levels in oral mucosal diseases: A controlled clinical trial.

Lichen planus is a common dermatologic disease to manifest in the oral cavity. Recurrent aphthous ulcers are the most common ulcers of the oral cavity causing discomfort to the patients. These two diseases have different clinical manifestations which require appropriate treatment after correct diagnosis. Though numerous etiological factors have been proposed for these diseases, their true etio-pathogenesis is not yet established and therefore all therapies are palliative and none is effective universally. In light of this, the role of nitric oxide as a mediator in the etio-pathogenesis of these diseases was considered. The present study was undertaken to note the salivary nitric oxide levels as measured through its product nitrite in oral mucosal diseases like lichen planus and recurrent aphthous ulcers and also to ascertain whether salivary nitric oxide level has a role to play as a pathophysiological mediator in these diseases