http://www.betterhealth.vic.gov.au/bhcv2 /bhcArticles.nsf/pages/Mouth_ulcers?Open Document
Treatment options
Most mouth ulcers are harmless and resolve by themselves in a few days. Other types of mouth ulcers, such as the aphthous variety or those caused by herpes simplex infection, need medical treatment. It isn't possible to speed the recovery of ulcers, but the symptoms can be managed and the risk of complications reduced. The range of treatment options includes:
-Avoid spicy and sour foods until the ulcers heal
-Drink plenty of fluids
-Regularly rinse your mouth out with warm, slightly salted water
-Keep the mouth clean
-Take pain-killing medication, such as paracetamol
-Apply antiseptic gel to the ulcers
-Use a medicated mouthwash
-Use steroid gels or tablets
-Treat aphthous ulcers with anti-inflammatory drugs
-Treat ulcers caused by the herpes simplex virus with anti-viral drugs
-Treat oral thrush with anti-fungal drugs.