What are the symptoms of impacted wisdom teeth?
BMJ Group Medical Reference
If your wisdom teeth haven't come through your gums properly, they are impacted. But this doesn't mean that they will bother you.
You get symptoms if your impacted wisdom teeth cause problems such as an infection, a cavity or gum disease. If you do have one of these problems, you might have:
Pain or tenderness in your gums or jawbone
Redness or swelling in your gums around the tooth that is impacted
An unpleasant taste in your mouth when you bite near the area
A headache or jaw ache.
More rarely you might have:
Sometimes you may have no symptoms, but could still have a problem with your wisdom teeth, such as:
Decay that doesn't cause any pain
Root resorption. This happens when your body attacks and destroys the root of your tooth.
A cyst (a sac filled with fluid)
As your wisdom teeth come through, your gums may feel sore or tender. This is temporary and should disappear once the tooth is in position. 
If your gums do get sore, some dentists recommend using a mouthwash.  You could also try painkillers such as ibuprofen or paracetamol. But see your dentist if the soreness doesn't go away. 
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