What causes a puss filled blister on your gum that if you push it will drain then fill up again?

A puss-filled blister on the gum that drains when pressed and then refills could be a sign of a dental abscess. Dental abscesses are infections that occur in the pulp, the innermost part of the tooth, or in the tissues surrounding the root of a tooth. They are typically caused by bacteria that enter the pulp or the tissues surrounding the root through a cavity, a crack in the tooth, or gum disease.

Symptoms of a dental abscess can include:

- Severe, persistent toothache

- Sensitivity to hot or cold temperatures

- Swelling of the gums

- A puss-filled blister on the gums

- Bad breath

- Fever

- Difficulty swallowing

If you experience any of these symptoms, it is important to see a dentist as soon as possible. Dental abscesses can be serious and can lead to further complications if left untreated.

Treatment for a dental abscess will depend on the severity of the infection. Treatment options may include:

- Antibiotics to clear the infection

- Drainage of the abscess

- Root canal treatment

- Extraction of the affected tooth

With proper treatment, most dental abscesses can be successfully treated.