Classification
Oral submucous fibrosis is clinically divided into 3 stages (Pindborg J.J.):
Stage 1: Stomatitis
Stage 2: Fibrosis
a- Early lesions, blanching of the oral mucosa
b- Older lesions, vertical and circular palpable fibrous bands in and around the mouth or lips, resulting in a mottled, marble-like appearance of the buccal mucosa
Stage 3: Sequelae of oral submucous fibrosis
a- Leukoplakia
b- Speech and hearing deficits
Khanna and Andrade in 1995 developed a group classification system for the surgical management of trismus:
Group I: Earliest stage without mouth opening limitations with an interincisal distance of greater than 35 mm.
Group II: Patients with an interincisal distance of 26-35 mm.
Group III: Moderately advanced cases with an interincisal distance of 15-26 mm. Fibrotic bands are visible at the soft palate, and pterygomandibular raphe and anterior pillars of fauces are present.
Group IVA: Trismus is severe, with an interincisal distance of less than 15 mm and extensive fibrosis of all the oral mucosa.
Group IVB: Disease is most advanced, with premalignant and malignant changes throughout the mucosa.
Read more about this topic: Oral Submucous Fibrosis