The most common pre-malignant condition of oral carcinoma is:: (A) Leukoplakia, (B) Erythroplakia, (C) Lichen planus, (D) Submucous Fibrosis
Answer is A. (a) Leukoplakia(Ref. Cummings, 6th ed., 1299)All the other choices also are pre-malignant but leukoplakia is the most common premalignant condition.