The dentists I have seen since the brain injury that I sustained both knew enough about brain injuries to make sure I was ok. I had no real issues from a cleaning I had almost a year ago and didn't return for a second cleaning because it was too difficult for me to get a ride. I recently had a temporary and permanent crown "installed" (?) and I just had trouble with the bright light that the dentist uses to see better in the mouth. She said she could tell I was sensitive to light; funny enough I don't feel sensitive at all compared to how bad I was the first year after the injury. I also became very fatigued from just the experience itself and needed extra rest afterwards.