Abstract
Lichen planus is a chronic mucocutaneous disease, inflammatory nature, which often results in oral manifestations, receiving the name of oral lichen planus (OLP). The LPO has its frequency varied from 0,1 to 4% of the population, with a higher incidence in women, around the 4th and 5th decades of life. Although the pathogenesis of OLP is related to a imunecelular response, mainly mediated…