Root canal procedure leaves U.K. man with 90-minute memory


A routine root canal procedure left a British man with a 90-minute memory, forcing him to think every day is the day of his surgery 10 years ago and stumping researchers.

The now 48-year-old man, who was identified only as “William O.,” was healthy before he entered the dentist’s chair at 1:40 p.m. on March 14, 2005, according to an article in the Neurocase journal.

The married father of two and British Armed Forces member had flown in from his station in Germany the night before for his grandfather’s funeral and spent the morning at the gym, according to the BBC.

That’s all William remembers.

At the end of the 50-minute dentist appointment, which involved anesthesia, William was left with a “10-minute span of awareness for events, after which he had no memory,” for the next month, the University of Leicester, U.K., researchers wrote.

William, who was pale, faint and slow of speech, was taken to the hospital, where he remained for three days.

Now, the Gulf War veteran wakes up every morning surprised to be back in his childhood home, believing he should be stationed abroad in the military, awaiting a dentist appointment.


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