None of my fiance's wisdom teeth are impacted, but one of them is partially erupted, and he got some food caught between the tooth and gum
, which led to an infection. It was minor, according to his dentist (I asked if it could be life threatening and she laughed), and she said there was a very small abscess which went away. He took penicillin and did topical antimicrobial and he says he feels totally fine now. (he never had a fever or swollen lymph nodes- just some swelling at the gum).