When you have an inflammation that persists to occur on your gum, it is possible for this inflammation to create puss that may lead to the formation of a puss corridor.
Eventually, the corridor reaches the surface of the gum, appearing as a gum boil.
Fistula on gum—also known as gum boil, occurs when this corridor is lined with certain types of cells the body produces when fighting the infection.
This appears as a bone defect on a tooth that may grows worse overtime. Your dentist determines the best treatment options for your dental fistula based on the cause of the infection.
Your dentist may prescribe antimicrobial treatments if you have a gum infection.
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Fuente: Youtube / Checkdent