The present invention relates to a protective device for placing as barrier between the flap and posterior teeth to avoid trauma from occlusion to the reconstruction flap, after performing fibrotomy in oral submucous fibrosis (OSMF) cases and the method of manufacturing the protecting device thereof. The protective device of the present invention for placing as barrier between the flap and posterior teeth to avoid trauma after performing fibrotomy in Oral submucous fibrosis comprises of retentive acrylic palatal plate, buccal protecting shield and modified clasp. Fig. 5
