What causes swollen gum around one tooth
A swollen gum beside one tooth may come from trapped plaque, gum irritation, decay, a cracked tooth, or an infection near the root.
The short answer
A swollen gum beside one tooth may come from trapped plaque, gum irritation, decay, a cracked tooth, or an infection near the root. The appearance alone cannot show whether the problem starts in the gum or inside the tooth.
What is the direct answer?
What does this question mean?
A dentist checks the gum pocket, tooth surface, fillings, bite, pulp response, and nearby bone. A pimple-like bump may be a draining sinus from a dental abscess, while tenderness around a partially erupted tooth can reflect a trapped food pocket.
What can you do next?
Brush gently, clean between the involved tooth and its neighbor, and rinse with lukewarm water. Do not pierce the swelling or place caustic products on it; note pain on biting, bad taste, fever, and changes in size.
When should you seek dental care?
Arrange an examination if the swelling lasts, recurs, bleeds, or is painful. Fever, facial swelling, pus, difficulty opening the mouth, swallowing, or breathing needs urgent care.
What should you ask the dentist?
Ask whether the source is the gum, the pulp, a root infection, a crack, or trapped debris, and whether probing or an X-ray is needed. Ask which treatment removes the cause rather than only reducing the swelling.
Frequently asked questions
Can a swollen gum around one tooth heal alone?
Minor food irritation may settle after cleaning, but persistent or recurring swelling needs an examination to exclude decay, gum disease, or an abscess.
Why is there a bad taste?
A bad taste can occur when inflammatory fluid or pus drains through the gum, so dental assessment is appropriate.