Evaluation of Salivary Level of miR-155 and IL-10 in Oral Lichen Planus Patients Before and After Treatment With Topical Corticosteroid

Inclusion Criteria: * Patients clinically and histopathologically diagnosed as having atrophic/erosive OLP. * Patients free from any other oral lesions * cooperative patients who agrees to take the supplied medications. * Patients who are systemically healthy Exclusion Criteria: * Patients suffering from any systemic disease. * Treatment with any systemic treatment such as systemic steroids, other immunosuppressive drugs or non-steroidal anti-inflammatory drugs at least eight weeks. * Treatment with any oral topical medications for at least four weeks prior to the study. * Pregnant and lactating women.