The necessary basic minerals are calcium carbonate, phosphorus, magnesium and potassium. If you can find those in good, bioavailable powder forms and work out the ratio to mix in water, i would try that. It's not only important that the combination be ingested, but that it make topical contact with your teeth, so it might not be the best tasting beverage in the end but maybe worth a shot.
[–] 20409148? 0 points 1 point 1 point (+1|-0) ago
Thanks for the details. I'll see if I can work something.