Tooth gum swelling reason
Swelling beside one tooth can come from plaque inflammation, trapped food, trauma, decay, or infection around the tooth.
The short answer
Swelling beside one tooth usually reflects inflammation in the gum or tissues around that tooth and needs an examination.
Which tissues may be involved beside a swollen tooth?
The gingiva, periodontal ligament, or tissues around the root may be involved. Plaque, food impaction, a sharp filling, decay, or an abscess can look similar.
How can you care for swelling beside one tooth?
Clean gently between the teeth and do not pierce the swelling or place aspirin on the gum.
When does swelling beside one tooth need prompt care?
Seek prompt care for pus, fever, increasing pain, facial swelling, or difficulty swallowing or opening the mouth.
What could the dentist investigate around the tooth?
Ask whether the source is gum disease, a pocket, decay, a crack, or an abscess, and whether imaging or drainage is needed.
Frequently asked questions
What is the main cause?
The gingiva, periodontal ligament, or tissues around the root may be involved. Plaque, food impaction, a sharp filling, decay, or an abscess can look similar.
What should I do first?
Clean gently between the teeth and do not pierce the swelling or place aspirin on the gum.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.