Typically round or oval with a white or yellow center and a red, inflamed border.
Most sores heal on their own within 7 to 10 days. However, you should consult a dentist or doctor if: The sore lasts longer than two weeks. Download Aphtes pdf
Deficiencies in Vitamin B12, zinc, iron, or folic acid are frequent culprits. Typically round or oval with a white or