Abstract
Oral submucous fibrosis (OSF) is a prevalent premalignant condition of the oral cavity, with insidious onset. Diagnosis of this condition is based on variable clinical features, including mucosal blanching, burning sensation, hardening of the mucosa and presence of characteristic fibrous bands that are associated with gradually increasing inability to open the mouth. Various researchers in the field of dentistry have categorized different stages of OSF. This paper is intended to incorporate all the stages of OSF defined in the literature to date.
