I use tooth powder from a Mommypotamous recipe. It calls for calcium bentonite clay, baking soda, sea salt, cloves, cinnamon, mint, stevia and charcoal. Been using this for over two years. I use a mortar and pestle to grind dried mint leaves and sea salt together to make them both fine enough for the powder, and then put it through a seive, discarding the bits that won't go through (they get under your gums if you brush with them). Everything comes from the bulk barn except the calcium bentonite clay, I got it on Amazon because it's so expensive in stores here. I double the recipe, dropping all the ingredients into a mason jar, and then just shake it until it's mixed. I sometimes add a couple drops of mint essential oil into the jar before I shake it.
I also exclusively use her coconut oil soap recipe for hands, face, body and hair, and rinse my hair with apple cider vinegar when it needs it.
I think the key to oral health is in diligence, and avoidance of added sugar, not fluoride. As a person who suffers from chronic dry mouth and in early menopause, the gums aren't what they used to be. It's important to stay hydrated. Once in a while when my gums are tetchy I rinse with some diluted hydrogen peroxide, and floss, floss, floss! If I had taken better care in my younger years I wouldn't have some of the problems I do now.
On a side-note, non-genetic Alzheimers has now been solidly linked to the bacteria porphyromonas gingivalis, which causes gum disease.