It is possible to surgically remove a section of the jaw, if it is canceroous
The next step though would be a biopsy (small sample) of the area to test if it is cancer
Once it is confirmed then either removal or possibly chemotherapy can assist
If it is cancer then you will want to check if it has spread before going with surgery.
The usual place it would spread to is the local lymph nodes (under the neck) and/or lungs
So your cat would need chest xrays at the least to check for this.
Cancer around a tooth is not common but it is best to get it investigated further as the quicker you get onto it the better chance of a full recovery
Hope this helps.