An abscess typically comes from a bacterial infection. A dental or teeth abscess is a collection of pus that forms inside the teeth or gums. Children are more likely to experience a dental abscess during their early years.
Bacteria exist in Plaque, food, saliva, and mouth, which sticks to the teeth and damages gums.
It’s essential to get help as soon as possible; if abscesses do not cure themselves, the bacteria can spread inside the tooth or gums.
Dental abscesses are usually painful, but not always. However, in some cases, they should be looked at by a dentist.
I also wrote a tutorial on Tooth Abscess Still Swollen After 3 Days of Antibiotics that you can follow.