mostly subbing...
When I had to quit all toothpaste in my avoidance diet (they all had coconut/corn/soy in them)....I went to using baking soda/sea salt. And my tooth sensitivity went away! Before that, my teeth would be way sensitive with regular old (not even whitening) toothpaste....and I would often resort to the Sensitive toothpaste. But come to find out, I don't need to do that.
The last 6 months or so,
I have been mostly using Uncle Harry's tooth powder from Lehman's. I like the Weleda toothpaste too, but it's more expensive and harder to find. One bottle of tooth powder lasted me over 3 months.