removing flouride from water is also on the list. dentists are going to make bank in anti-flouride areas. hydroxyapatite needs more research before it can be usefinitely , right now its just marketing spins, the most useful application is in implants.

the reason people are going for flouride free toothpaste and felt "healthier, is because alot these off-brand toothpaste have whitening products, its a temporary benefit, and it is harmful to the dentin down the line.