Hi Robert, If you went to a regular dentist that removed it, it could be that if he didn't use a dam, and have somebody constantly using a sucktion device you could have consumed a lot of mercury and other junk.
Also before you make the drive, ask the dentist if he has a cavitat machine, or some other way to find a cavitation.
Xrays won't do it. it's been 15 years or so when I had my cavitation so there could be an alternative way to detect a cavitation by now