> effects of fruit acids and sugars on the enamel.

I have been told by dentists that there will not be a cavity in a clean
tooth. That is a tooth that does not have plaque or tartar. To me that
sounds as if brushing ones teeth morning and evening and eating whatever
during the day one would be out of danger from those little "tooth trolls".
Why not just drink a little water after fruit eating if it worries you?

I believe that most problems to teeth are caused by what does not reach them
in terms of minerals when they are being formed - not what you eat.
Eva