[buybackoff]

Inetersting, the paper explain how remineralisation works and the role of F and fluoroapatite. This reminds me the recent Veritasium video about why Teflon is so strong - F chemical bonds are the strongest.

For Novamin alone, I've seen and understood the claims of sensitivity protection with hydroxyl-carbonate apatite (HCA). The paper explains it in 4.3. The layer is temporary and protects from acids, conserving the teeth tissue below.

But F is essential and my paste has it together with Novamin. It seems they may work well together. But the paper also explains that F works with saliva rich in minerals to repair the enamel. So if Novamin creates a strong layer, it may block access of F + saliva to enamel (my speculation, as in 4.2 they say "A clean tooth surface is required to access the mineral-deficient spot.").

So maybe a classical Ca+F paste is better overnight when no acid exposure is expected, but Novamin is nice in the morning before breakfast.

[aspenmayer]

> is nice in the morning before breakfast.

I typically brush after meals, not before, but however you do it is better than not doing so at all.

[YZF]

FWIW I think the theory is that you have some window before whatever on your teeth turns into hard plaque. So brushing in the morning helps remove any accumulation that happened overnight. I guess brushing after breakfast might be slightly more efficient in the sense that it will clean away/remove food remnants you've just eaten but not sure how much difference it makes in practice as long as you're brushing again later (e.g. before you go to sleep).

EDIT: Technically plaque forms faster but only hardens into "tartar" after about 24 hours or more.

EDIT2: There is another reason to avoid brushing you teeth immediately after a meal. Supposedly they're softer due to higher acidity or something along those lines. It's recommended to wait 30-60 minutes after a meal before brushing.