This is a story on Dentist Dr. Joseph R. Nemeth’s YouTube Channel. He said a woman had a crown put on a tooth. Soon after, that tooth started to hurt, and she got headaches. She went to the hospital, got a CT Scan, and there was nothing definitive. She continued to have headaches, and she went back to the hospital, they did an MRI, and found that she had a brain abscess. They shaved her head and drained the. brain abscess. They also took a culture of the brain abscess. One week later, she had a stroke. The doctors found that her brain abscess was caused by her dental infection on that tooth that got a crown.