Very few dentists actually use the glass ionomers anymore. Unless you have a nice thoughtful biological dentist I suppose, some of them still use it out of courtesy. they used to all use it then they changed over to heavy duty methacrylate/epoxy type composite because those stick better to the dentin in your tooth.

which is eaxctly why I have so much difficulty finding a dentist these days I was fine a dozen years ago when glass ionomer was the main deal. I have real issues with anything tha resembles epoxy.

and the flouride deal with the new composites yeah.. so I will have my old molars extracted. I am almost 50 though Bann, my teeth have seen their better days. I have no idea what I would do if I were younger, only use a dentist who still uses the old stuff I guess, hard to find though. Very hard to find I have thus far been unsuccessful in it.