hI! I used to use baking soda-but we ran out and I have to get some more. I'd say that if it is dissolved in water, it wont be abrasive.
I have this toothpaste I just got that has Q10 as well as sea algea and flouride-- Today is the 2nd day Im using it.
thanks for the tip on calcium/vitamin D and phosphorus. Im going to use a mortar and pestle to grind up Calcium/mineral supplements to make a salve for that tooth, now that you mention it!