Back gums inflamed
Inflammation behind the last molar can come from plaque, a partially erupted wisdom tooth, or an infection that needs examination.
The short answer
Inflammation behind the last molar can come from plaque, a partially erupted wisdom tooth, or an infection that needs examination. Food trapped under a gum flap can irritate the tissue and allow bacteria to multiply.
Which gum tissues can become inflamed at the back?
The tissue behind a back tooth may be the attached gum, the movable gum over a wisdom tooth, or the lining around a periodontal pocket. Redness, swelling, tenderness, bleeding, bad taste, and reduced mouth opening help distinguish local irritation from a spreading dental infection.
How should you care for inflamed back gums?
Gently clean the area with a soft brush and rinse with warm salt water while arranging an examination. Do not cut the gum flap, squeeze swelling, or place aspirin directly on the tissue; a dentist may irrigate the area, remove trapped debris, treat decay, or assess the wisdom tooth.
When should inflamed back gums be assessed?
Arrange dental care if swelling persists, recurs, bleeds easily, or produces pus or a bad taste. Seek urgent help for facial swelling, fever, worsening pain, difficulty opening the mouth, swallowing, or breathing.
What should you ask about inflamed back gums?
Ask whether the inflammation is caused by a wisdom tooth, gum disease, decay, or an abscess, and whether an X-ray is needed. Ask which cleaning method is suitable and whether the tooth needs monitoring, restoration, gum treatment, or removal.
Frequently asked questions
Can an inflamed back gum heal by itself?
Mild irritation may settle after careful cleaning, but repeated or worsening swelling can indicate a tooth or gum problem that needs treatment.
Why does the gum behind my wisdom tooth swell?
A gum flap over a partly erupted tooth can trap food and bacteria, causing localized inflammation known as pericoronitis.
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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.