

Why do that when you can get prescription-strength fluoride toothpaste from your dentist if you are concerned about your teeth? Your dentist will be able to tell if you need it or not. You could also look into varnishes and having custim trays made for your teeth that you leave in overnight to remineralize your teeth.
Even regular OTC toothpaste is sufficient with proper application, a proper oral care regiment, and regular interventions from the dentist (e.g. cleanings every 6 months).
Fluoride’s remineralization benefits are topical. Brush, spit excess, and leave toothpaste on 30 minutes before rinsing. Do not drink or eat anything during that period.
Brush as directed, but at least two times a day. Proper flossing is critical as well. Do not leave acids on your teeth without rinsing with water and do not let plaque develop and stay on your teeth for extended periods, otherwise it hardens into tartar and can’t be removed at home.
Obviously certain foods are better for your teeth than others. Grazing/snacking habits can potentially harm your teeth as well. Xylitol mints are a good thing to have during periods where you can’t brush. I suggest drinking plain water often when consuming food and rinsing immediately after.
Teeth do not demineralize before eruption. The human body is able to produce strong teeth and enamel unassisted, our diets and habits do the damage. The body is unable to repair the damaged enamel without topical solutions.
If you have a young child where topical fluoride is unadvised, consider nano-hydroxyapatite toothpaste, especially if they know how to spit out. I like Fygg’s brand, it’s made by dentists and the studies are promising. nano-HAp remineralization is less resistant to acid, so please consider fluoride as soon as possible.
As always, consult with a dentist and get their advice before doing anything with your children’s teeth — including having regular check-ups with them.
I believe establishing and maintaining consistent care with dentists and solid oral health routines and diet practices young are sufficent for life.
You double-commented, by the way.