Why gums swell up
Gums swell when inflammation increases blood flow and fluid in the tissue, commonly from plaque, trauma, infection, or hormonal change.
The short answer
Gums swell when the gingival tissue becomes inflamed, most often from plaque buildup, but irritation, infection, medicines, or hormonal changes can also contribute. The pattern of swelling, bleeding, pain, and affected teeth helps identify the cause.
Why do inflamed gums look puffy and bleed?
Inflammation makes gum tissue red, puffy, tender, and more likely to bleed because immune cells and fluid move into the area. Swelling around one tooth differs from generalized gingivitis and may indicate trapped food, a periodontal pocket, or a tooth abscess.
What gentle steps can help swollen gums today?
Brush twice daily with a soft brush, clean between the teeth, and rinse gently if the tissue is sore. Avoid tobacco and aggressive scrubbing, and note whether a new medicine, dental appliance, food injury, or pregnancy coincided with the change.
When should persistent gum swelling be checked?
Book dental care for swelling that persists, recurs, bleeds easily, or is accompanied by bad breath, pus, pain, or loose teeth. Facial swelling, fever, or difficulty swallowing or breathing needs urgent assessment.
What should your dentist examine to find the cause?
Ask whether the swelling is gingivitis, periodontitis, an abscess, or irritation, and ask which areas need probing or X-rays. Ask for a cleaning method tailored to your gumline and any treatment needed to remove the cause.
Frequently asked questions
Can swollen gums grow back over a tooth?
Inflamed tissue can enlarge around a tooth, but the cause needs diagnosis before treatment is selected.
Why do gums swell in one spot?
A trapped particle, local gum pocket, trauma, or infection from a nearby tooth can affect one area.
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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.