Upper back gum swollen

A swollen upper back gum can come from trapped food, gum inflammation, an erupting tooth, or infection around a tooth.

A localized swelling behind an upper molar often involves the gum over or beside that tooth.

Food debris, plaque, an erupting wisdom tooth, a cavity, or a dental abscess can irritate the tissue.

Rinse gently with warm water, brush the area with a soft brush, and avoid squeezing the swelling.

Arrange an examination promptly if swelling persists, pain or fever develops, or the face, eye area, or throat begins to swell.