What is a fistula in the mouth?

A fistula often develops as a result of long-standing inflammation in the jawbone. The fistula is a small channel through which pus from the infection escapes. This is a natural defence mechanism of the body to relieve pressure. A fistula often appears as a white or red bump on the gums. When pressed, fluid or pus may come out with an unpleasant taste. The presence of a fistula always points to an underlying problem. An X-ray helps to find the cause of the infection. Treatment often consists of cleaning or root canal treatment. In the case of severe damage, extraction may be necessary. A fistula should always be examined by a professional.