<s>[INST] I have oral fibrosis, cannot open my mouth big. The jaw muscle are tight. Can I use apply derma dew inside the mouth on the muscle area to make it more flexable. Or do you have any product that might help me open my mouth wider. I have tried all other medicatins; nothing helped. [/INST] Hi & Welcome to Chat Doctor. I appreciate your concern for the possible treatment of Oral fibrosis. As per the problems given in your query, apparently you are suffering from oral submucosal fibrosis with stage 2. If the combination of topical application of steroids and hyaluronate failed to show any improvement then you should consult a plastic surgeon for Erasmus (inability to open the mouth), the following reconstructive surgeries can be undertaken.1. Simple excision of the fibrous bands2. Split-thickness skin grafting if there is involvement of temporal is tendon Besides the surgical procedures mentioned above the nutritional deficiencies should be investigated like CBC (for hemoglobin levels), iron levels, vitamin B complex levels, protein levels and ESR and treated accordingly. Hope the suggestions given above could be of great help in seeking the treatment from a plastic surgeon. </s>