[edgineer]

Counter-anecdote, I did the same, got Burt's Bees with novamin when they still sold it (discontinued), then switched back to Crest. I prefer the Crest. No cavities either way, but tooth sensitivity and clean feeling differences. A tooth chip I wondered might remineralize, i.e. grow back or fill in or something, had no change.

My guess is the SLS detergent, present in Crest and not in Burt's, is the more significant factor.

[galkk]

I always had sensitive teeth (and brush exclusively with sensodyn for many years) so I guess this is less of a factor for me.

I buy Canadian? Sensodyne that has novamin in it.