Technically it was an orthodontist. I have an even more hilarious story about a dentist.
Ignoring my very first dentist who was insane and removed all of my front teeth (All of them. Thankfully they were baby teeth) before being sued by the parents of all the kids he apparently did this to and losing his license, another dentist who I really liked because she was generous with the gas :3 gave me a filling in my molar.
For the longest time everything was cool, but it turned out she hadn't properly cleaned the tooth before putting in the filling. She sealed bacteria inside the tooth, where it lay dead but dreaming until the stars were right. By "Until the stars were right" I mean until it abscessed. I have never felt pain like that before. A kidney stone felt pleasant by comparison. Nothing worked, oragel just made my tongue numb, cold water made it worse, arcane deals with dark powers were ignored, and I went several months without telling anyone, because I don't like bothering people about my silly problems. Long story short, my new dentist tore that tooth a new one, grinding everything out until it was just a series of small spikes that hurt my tongue, and then removed it and five other teeth (Three wisdom teeth and two upper bicuspids to make room because I had a horribly mangled mouth). Good times, man, good times.