My bottom gums are swollen
Swollen lower gums often reflect plaque inflammation, but trapped food, trauma, an erupting tooth, or infection can also be responsible.
The short answer
Swollen lower gums are commonly caused by plaque-related gingivitis, but a trapped irritant, gum injury, erupting tooth, or dental infection can produce the same sign.
Why are your lower gums swollen?
Gentle cleaning may reduce inflammation, yet one-sided swelling, pus, tooth pain, fever, or rapid enlargement needs prompt dental assessment.
What gum tissue is affected when the lower gums swell?
The lower gums are gingiva covering the jawbone around the roots and necks of the teeth. Swelling means the tissue contains increased inflammatory fluid or has been enlarged by a local mass.
A clinician distinguishes diffuse plaque inflammation from a localized abscess, food impaction, trauma, calculus, or inflammation around a partially erupted wisdom tooth.
How can you care for swollen lower gums today?
Brush gently with a soft brush, clean between the affected teeth, and rinse with warm salt water. Do not puncture the swelling or scrape it with a sharp object.
Note whether the swelling is on one side, whether it bleeds, and whether chewing, temperature, or a particular tooth changes the discomfort; these details help diagnosis.
When should swollen lower gums be checked by a dentist?
Arrange an examination if swelling lasts beyond a short period, recurs, bleeds easily, or is linked to bad breath, tooth sensitivity, or a loose tooth. The dentist may inspect the gum, probe pockets, test teeth, and take imaging.
Get urgent help for facial swelling, fever, pus, difficulty swallowing or breathing, or restricted mouth opening.
What conditions could explain swelling in the lower gums?
Ask whether the swelling is gingivitis, periodontal disease, an abscess, food impaction, or an erupting tooth problem, and what examination findings support that diagnosis.
Ask whether you need professional cleaning, a filling, root canal treatment, gum treatment, or care for a wisdom tooth, and how to clean the area while it heals.
Frequently asked questions
Can food stuck between teeth swell the gum?
Yes. A trapped fragment can mechanically irritate the papilla between teeth and allow local inflammation; remove it gently with an appropriate interdental method and seek care if swelling persists.
Are swollen gums always gum disease?
No. Infection at a tooth root, trauma, an erupting tooth, medication effects, and localized irritation can resemble gum disease.
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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.