title: Oral Lichen Planus: a retrospective study of 420 Iranian patients.
abstract: OBJECTIVE
  In terms of the demographic and clinical characteristics, this is the one of the largest studies on Iranian patients with Oral Lichen Planus (OLP).
  
  
  METHODS
  Data was taken from the medical records of 420 consecutive patients referred to the Oral Medicine Department, and who were subsequently found to have clinical and usual histopathology consistent with features of OLP.
  
  
  RESULTS
  Seventy percent of the patients had been referred to the Oral Medicine Department by general dental practitioners. 52.6% were referred due to oral mucosal and/or gingival pain or burning sensation. Reticular OLP was the most common presentation (76.9%); about 18% of patients reported symptoms or signs, or had a known history of OLP, or possible Lichen Planus affecting non-oral epithelia. A malignant transformation rate of 0.07% was observed.
authors.affiliation: Oral Medicine Department, School of Dentistry and Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. atessapakfetrat@yahoo.com
authors.forename: Atessa
authors.initials: A
authors.lastname: Pakfetrat
authors.forename: Abbas
authors.initials: A
authors.lastname: Javadzadeh-Bolouri
authors.forename: Samira
authors.initials: S
authors.lastname: Basir-Shabestari
authors.forename: Farnaz
authors.initials: F
authors.lastname: Falaki
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007492:Iran; D017676:Lichen Planus, Oral / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult