I developed more than one of these ulcers in my mouth. At first I just thought they were canker sores, and would eventually go away.
When this didn't happen, I decided I needed to find out what they were. They weren't painful, but I did notice that my jaw was tender after I did a lot of chewing.
They took some x-rays and took some tissue to send in to get checked. Everything came back OK and I also had these removed by surgery.
I still can't figure out where these came from. I don't remember any kind of trauma to my jaw so don't know what I can do to prevent them.
My husband teases me and says I got them because I talk too much! If that is the case, I probably will develop them again.