Cavities why after years with no cavities?
I haven't had any cavities in over 20 years and now I'm told I have 2. The one tooth isn't even dark, but has a rough edge and I'm told it is soft. I was told by the dentist I lost a filling in that tooth, but I absolutely never had one in that tooth. First, does this sound for sure like a cavity? Second, why would I now get cavities, when I still brush and floss the same?