I was fiddling with a back molar and 2 small pieces came off I was able to crush them into a powder in my fingers!!!! I brush twice daily and listerine at least once daily I do not floss but my teeth are well spaced allowing tooth brush bristles to clean very well.. Needless to say I will be going to the dentist right smartly but I thought it very peculiar for the tooth to just crumble!!!! What would cause that!!????

and how would one correct it? Oh it's worth mentioning I am a smoker. I have no cavities and have not since I was a kid.

It is probably plaque. SM

Plaque, actually.

Rktpro. I had a similar experience a long time ago. The dentist knocked off some chunks for me to examine. SM