What would you guys do if you wanted to make sure your child's teeth developed properly?

If I had a child, I'd probably see that they had omega 3 fish oil in their diet, vitamin D3, and a swish with coconut oil a couple of times a week wouldn't hurt their teeth and gums.

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"Don't regret growing older, it's a privilege denied to many"

Coconut oil swishes....that would be a great habit to instill in her. It would also serve as a nice case study to demonstrate the possible effects of oil swishing from childhood up. (that is, if she doesn't develop cavities)

Well, I can't see it hurting at all...although some things may just be hereditary...https://www.natmedtalk.com/wiki/Coconut

OK here's what I did and have been doing and I haven't had a cavity or gone to a dentist in 5 1/2 years. I simply rinse my mouth for 10 or 15 seconds with 3 drops of activated MMS1 (chlorine dioxide) plus a little water every so often or whenever I think of it. One time I was unable to treat my teeth for four months and had no problems at all. If the taste is too bad for a child, grape juice with out any added vitamin C taken immediately afterwards might make things go smoother. By the way I still have a mouth full of original teeth that feel just fine.

Well, I do maintain their balanced and nutritional diet. I follow an ideal diet for them in which I include plenty of vitamin D, vitamin C, phosphorus, and calcium.