Pain gum back of mouth
Pain behind the last molar can come from an erupting wisdom tooth, inflamed gum, trapped food, decay, or infection in a nearby tooth.
What can cause pain behind the last molar?
Pain behind the last molar can come from an erupting wisdom tooth, inflamed gum, trapped food, decay, or infection in a nearby tooth.
Why can the gum behind a molar become painful?
The gum behind the last molar can partly cover a wisdom tooth and collect plaque and food. This inflammation is called pericoronitis, but a cracked molar, cavity, abscess, or cheek trauma can feel similar.
How can you gently care for the painful gum?
Brush the area gently and rinse with warm salt water without forcing anything under the gum. Do not squeeze swelling; use pain medicine only when suitable and according to its label.
When does pain behind a molar need urgent care?
Get urgent care for spreading swelling, fever, pus, difficulty opening the mouth, swallowing, or breathing. Arrange an examination soon if pain persists, recurs, or causes a bad taste.
What should you ask about the source of back-gum pain?
Is the wisdom tooth, adjacent molar, gum flap, or tooth root causing the pain, and would an X-ray alter treatment?
Frequently asked questions
Can symptoms alone confirm the cause?
No. Several dental conditions overlap, so diagnosis uses the history, examination, and imaging when indicated.
What treatment might be needed?
Brush the area gently and rinse with warm salt water without forcing anything under the gum. Do not squeeze swelling; use pain medicine only when suitable and according to its label.
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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.