“…Although many studies have demonstrated the premalignant nature of oral lichen planus, many other have stated the opposite. Sousa et al 42 (2005), for instance, found no connection between oral lichen planus and the epidermoid carcinoma when using criteria such as sex, race, age and site of increased disease prevalence; this suggests that the profile of lichen planus patients differs considerably from that observed in patients with the epidermoid carcinoma.…”