I had a toothache, and I went to my dentis, but they could not find anything during the exam or x-ray; they did not have access to a 3D x-ray/scan, so they referred me to an endodontist who did. However, when I got to the endodontist's office, they only wanted to perform a scan while doing a root canal; I told them I didn't want a root canal and I only wanted a 3D scan. I was told I had to do a root canal, which I refused, and so they declined to perform a scan. A few hours later, my tooth pain subsided. That was over two years ago.