[Faline]

An abscess in the alveolar ridge of the jaw, usually caused by the spread of infection from an adjacent nonvital tooth. Also called dental abscess.

[Sharon]

They're brilliant to watch being drained

[Brometheus]

I think I have/had one of those above a derelict molar.. It broke some time ago when I bit something hard. But Yea, I definitely feel/felt something up there that I imagine looks like this..

[Rachee]

They need to get their teeth clean too