Hi @unwirklich. My spouse is plagued by these sores, they are painful and make it hard to enjoy eating until they heal. There's no 'cure', they just take time to heal.

The doctor suggested avoiding certain foods to help prevent canker sores. Abrasive foods with sharp edges like potato chips can create tiny cuts in the cheeks and mouth that allow bacteria the chance to cause problems. If you are prone to cankers, try avoiding highly acidic foods as well, like citrus juices or red pasta sauces, especially if your mouth is healing.

To help speed a healing canker, in addition to using over the counter pain medications to help reduce swelling and discomfort, you can try cold ice water to help numb the area. Keep your mouth as clean as possible. Use a mouthwash often to help kill germs inside your mouth and around your gums. Or try rinsing the mouth (don't swallow) with a mixture of 2 oz. hydrogen peroxide and 2 oz. water a few times a day.

Good luck.

Canker sores are small mouth ulcers than can be uncomfortable but not painful. There are two different types of Canker Sores, which are complex canker sores and simple canker sores. Complex canker sores are quite rare but simple canker sores can occur a few times a year and can last up to seven days. Causes of canker sores are unknown but treatments can vary between over the counter medicines to prescribed medicinal products to home remedies. One canker sore treatment solution is a salt water mouth rinse in the morning and after each meal as well as before bedtime. Calamine lotion can also be used to treat canker sores as well as other liquid products like ointments with a numbing ingredient such as Anbesol, Benzocaine, Oragel, Orabase, Zilactin-B, Tanac. There is not an actual cure for canker sores but there are several other products that can aid against canker sore symptoms and help with rapid canker sore healing, as well as the ones mentioned.

Canker sores are the worst thing EVER! I used to get them all the time especially after I bit my lips or when I was severely stressed. I really don't know why I ever got them but of all the things I tried I found the best and most effective was rinsing my mouth with salt water, not eating anything to acidic (tomatoes, strawberries, pineapple, etc), and I used a product called Kanka. The drop liquid form that it comes in works the best and it got rid of the sores within two days. For me, this was the only product that worked for me and the only one I suggest when dealing with canker sores and you can buy it at any drugstore.

I have had canker sores my entire life and my dentist suggetsted I take Lysine tablets. Lysine is an essential amino acid. They have reduced the severity and occurrence of the cankers sores. Applying vinegar to the sore also helps. It's very painful to apply but it will heal the sore quickly. You can apply anbesol or other oral ointments which help numb the area.

I would also suggest avoid eating foods that have sharp edges. Anything like that can dig into and cut the gum or inside of the lip and may lead to more sores. If your teeth keep rubbing and making the inside of your mouth sore, then maybe you need braces to align the teeth so this doesn't happen.

Good luck!

http://www.billboardmama.com/images/canker%20sore%202.jpg