E cigarettes found to cause change in mouth bacteria which could lead to gum disease or oral cancer Oral ulceration: causes and management The Pharmaceutical Journal Recurring mouth ulcers that just won't heal? It's not always spicy food! Sometimes your body is not irritated it's deficient. Painful sores, burning sensation, difficulty eating or talking these could Mouth Ulcer: Symptoms, Causes, and Treatment Does anyone know what this is on the roof of my mouth? I have these small white patches on the roof of my mouth with red dots in the centre. It's painless