Background and Objective: Oral Submucous fibrosis (OSMF) is a chronic debilitating disease and a well recognized premalignant condition of oral cavity. The exact pathogenesis is not well established but the cause is believed to be multifactorial. The most commonly used treatment regimen is combination of Hydrocortisone acetate or Triamcinolone Acetonide with hyaluronidase and recently oral Pentoxifylline, but studies of its long term effect are lacking. The present study was therefore conducted to evaluate the long term effectiveness of afore said drugs.

Material & methods: In the present study 60 previously treated patients of OSMF were registered. Out of which 34 patients had received Inj. Hydrocortisone acetate (1.5ml) mixed with Hyaluronidase (1500 I.U.) at weekly interval for 22 weeks, 15 patients had received Inj. Triamcinolone Acetonide (10mg/ml) mixed with Hyaluronidase (1500 I.U.) at biweekly interval for 22 weeks and 11 patients were given Tab Pentoxifylline (Trental) 400mg three times daily for a period of 7 months. Long term outcome was evaluated on the basis of symptom score and sign score.

Results: There was statistically significant improvement between long term follow up score and immediate Post–treatment symptom score ( p value < 0.05 )

Interpretation and Conclusion: It was concluded that the improvement in symptoms and signs following treatment increased further or maintained in long term follow up.