Gum under tooth swollen
Swelling under a tooth can come from gum inflammation, trapped debris, eruption, or a dental infection that needs examination.
The short answer
Swelling under a tooth can come from gum inflammation, trapped debris, eruption, or a dental infection that needs examination. The cause cannot be identified from the swelling alone.
What is the direct answer?
What does this question mean?
The lump may be in the gingiva beside the tooth, around a partially erupted wisdom tooth, or near the root of a tooth with decay. Tenderness, pus, bad taste, fever, and pain on biting make infection more concerning.
What can you do next?
Rinse gently with warm salt water, keep the area clean with a soft brush, and avoid squeezing or puncturing the swelling. A dentist may examine the tooth, test its pulp, check the gums, and take an X-ray.
When should you seek dental care?
Arrange prompt dental care when swelling lasts, returns, drains, or is linked with toothache. Go urgently for facial swelling, fever, reduced mouth opening, or difficulty swallowing or breathing.
What should you ask the dentist?
Ask whether the swelling is in the gum or from the tooth root, whether an X-ray is needed, and which treatment removes the cause. Ask what warning signs should prompt urgent review.
Frequently asked questions
Can a swollen gum go away by itself?
It may settle temporarily, but recurrent or persistent swelling needs assessment because the underlying cause may remain.
Does a gum boil always mean an abscess?
A draining bump can be associated with an abscess, but examination and sometimes imaging are needed to confirm the source.