You have developed bony exostosis or tori in the jaw bones surrounding your teeth. These are believed to be your body's response to a strong bite or clenching and grinding habits. They are similiar to a callous, in that the extra tissue (bone) has been formed to strengthen the sockets of the teeth most susceptible to the strong biting forces. You can see photos of these here:
These can develop almost anywhere near the teeth, are benign and nothing to worry about. If they are cosmetically unpleasant for you , they can be removed by an oral surgeon.
I hope this answers your question. If you would like to discuss this further or have any additional questions, please reply to my answer and I will get right back to you.
Sincerely, XXXXX XXXXX DDS