A few weeks ago in June, 2015, a 17 year old Minnesota woman died about a week after having wisdom teeth surgery. Near the end of the wisdom teeth surgery her blood pressure increased, her pulse dropped, and she went into cardiac arrest. She then was transferred to a hospital and suffered from seizures and swelling in her brain until passing about a week later.
It is not clear what caused the death to occur. She could have possibly had an undisclosed heart condition that has occurred in other cases. It is possible for a patient to only become aware of an asymptomatic and abnormal heart rhythm once they come in for a surgery.
I have discussed other deaths from wisdom teeth removal on this website (see http://www.teethremoval.com/death.html). Based on numerous studies and publications I have said that around 1 death occurs in every 400,000 from wisdom teeth surgery (see http://www.teethremoval.com/mortality_rates_in_dentistry.html).
For some additional cases where a teenager died after wisdom teeth surgery in the United States of America see for example http://blog.teethremoval.com/flesh-eating-bacteria-leads-to-death-after-wisdom-teeth-removal/ and http://blog.teethremoval.com/wisdom-teeth-removal-leaves-to-death-two-days-after/.
Source: Elizabeth Narins. 17-Year-Old Girl Dies After Getting Her Wisdom Teeth Removed. June 16, 2015. http://www.cosmopolitan.com/health-fitness/news/a41983/17-year-old-girl-dies-after-getting-her-wisdom-teeth-removed/. Accessed July 4, 2015.