BEST DENTIST IN ANNA NAGAR! Canker sores are small and unsightly white or yellow lesions that can erupt anywhere in the mouth. Canker sores, which are usually round or oval, can be a big pain, literally, for those who frequently suffer from them. Minor canker sores usually go away in a week or two, but bigger ones are often extremely painful and can take as long as six weeks to heal.  Stress also plays a role in the development of canker sores. Acidic and spicy foods, such as citrus fruits and chili peppers, can prompt the development of canker sores. A deficiency of folic acid, zinc or iron in the body can initiate the development of canker sores. Over-the-counter canker sore remedies, including gels, liquids and patches, can be applied to the canker sore to temporarily take the pain away.If you are bothered by frequent canker sores, contact us at Apple Dental today to schedule an appointment. We want to help you experience optimal oral health, free from pain and discomfort!