Ulcers generally take 1-2weeks to heal completely. recurrent ulcers can be due to local mouth conditions such as rough teeth surface or rough mouth appliances or dentures n cheek bites. It can also b due to General nutrtional deficiency, digestion prob, work pressure n stressful lifestyle etc. Certain bacterial n viral infections also cause ulcers. Treatment: start on multivitamin tabs which includes vit c n iron supplements if ur hb% levels r low. Apply dologel oral ointment on ulcers thrice daily. Avoid spicy n oily food, alcohol, tea n coffee. Drink plenty of water n hv fibrous n citrous foods. Visit dentist to rule out oral factors responsible for ulcers.