Have you tips to prepare sour fruits to be less acidic to teeth?

The good news is, it's apple & plum season here. The bad news is that I get tooth pain from eating so many raw fruits. I'm looking for the best way to prepare fruits to be less acidic so that I can eat them without doing damage to my teeth. Any advice?

You could have them in smoothie form and drink with a straw, bypassing your teeth altogether.

A pinch of baking soda should offset some of the acidity. But I'll warn you, a lot of the flavor comes from the acidic compounds. Neutralizing them will change the taste, sometimes pretty drastically.

Growing up, my mom would take crab apples, peel and slice them, add lemon, cinnamon, sugar, and salt, cook it in a pot until it got kind of gelatinous, cool it then freeze it in medium-sized bags (I imagine cans would work fine too). Boom, pie filling.

Unfortunately, turning the acidity into something sweet is the only option I know. As Ellendra said, neutralizing the acid will alter the taste of fruit by a fair bit.