A swollen gum around a wisdom tooth is often caused by inflammation around a tooth that is partly erupted or difficult to clean. Food and bacteria can become trapped beneath the gum, causing tenderness, swelling, bad taste or discomfort when opening the mouth.
Common Causes
Pericoronitis is inflammation around a partially erupted wisdom tooth. Other possibilities include tooth decay, gum infection, an abscess, trauma from biting the swollen tissue, or pressure from an erupting tooth.
Symptoms to Watch
- Red or swollen gum behind the last molar
- Pain or tenderness
- Bad breath or unpleasant taste
- Difficulty opening the mouth
- Swelling of the cheek or jaw
- Fever or feeling unwell
What Can You Do?
Keep the area as clean as possible with gentle brushing. Warm salt-water rinsing may provide temporary comfort, but it does not remove the underlying cause. Avoid putting aspirin directly on the gum and do not attempt to cut or drain the swollen tissue yourself.
When Is It Urgent?
Seek prompt dental or medical care if swelling is worsening, pus is present, fever develops, or pain is severe. Difficulty breathing or swallowing, significant facial or neck swelling, or rapidly spreading infection requires urgent emergency care.
Can Wisdom Teeth Cause Repeated Swelling?
Yes. A partially erupted wisdom tooth can repeatedly trap food and bacteria. A dental examination can determine whether cleaning, monitoring, medication, or removal is appropriate.
FAQ
Will swollen wisdom-tooth gum go away by itself?
Mild irritation may settle, but recurring swelling should be evaluated because the underlying tooth position or infection may remain.
