Please tell me what are good ways to get rid of a canker sore?

Try Zilactin B, : An over the counter medication found in pharmacies. Dry area, apply thin layer, let it dry and turn white. Your dentist can prescribe a steroid in a delivery vehicle called orabase. Rx for that! avoid toothpaste with sodium lauryl sulfate which can help cause. Avoid acidic foods. Be careful brushing not to gouge tissue. Lasers work very well, hope your dentist has one. Good luck!

Canker Sores: Canker sores are usually of viral origin. In most cases, they take 4-5 days to heal and go away. The best inexpensive remedy is to rinse with warm salt water several times a day and to keep it and the surrounding area clean. Some over-the-counter topical gel anesthetics are available at pharmacies to relieve the discomfort and to reduce the length of time that the sore is active.