I'll add this.. my neighbor who has 4 areas in her mouth that has pain and has crowns. She says these crowns are NOT over RC's...she has one RC and has no pain from it. I don't know how old it is but I think pretty old. She says a "good" dentist did it. This same neighbor has and still does drink fluoridated water as she can't afford to buy clean water. Our city fluoridated in 2009 after NEVER adding "F" to our water except the naturally occurring that comes from rocks from the dams etc.

I have a RC that is probably about 40 yrs old and it never gave me problems. Guess it was a good dentist...the one I have issues with is maybe 10 yrs old..different dentist.