I had a boil, abscess on my upper gum. I went to two different dentists and they said they couldn't see anything wrong with teeth on x-rays they took. The first dentist did prescribe antibiotics and infection went away. Both dentists advised me to go to endodontist. The nearest teeth were tooth no. 13 and 14. I actually saw the white puffy abscess with my own eyes.

I read that certain systemic diseases can cause boils on gum. Does it have any connection to PN? Should I go to a general MD?