Everything, in order.

Less famous than potassium nitrate, less hyped than n-HAp, and possibly more effective for some forms of sensitivity. The case for arginine.

Sodium bicarbonate is one of the safest cleansing agents at the right concentration. At Pinterest concentration, it isn't.

Not all anti-fluoride arguments are the same. A grown-up read of the legitimate concerns and the conspiracy-tier ones.

A holistic-wellness claim that glycerin 'coats teeth and prevents remineralization' won't die. Here's what the chemistry actually says.

Relative Dentin Abrasivity. The one number that distinguishes a gentle daily paste from one thinning your enamel.

20 nanometres of biomimetic crystal, originally developed for astronaut bone loss. Why it ended up in your toothpaste.

The 6% cap is not arbitrary. A short guide to the consumer-safety regulations that govern what's in the box you can legally buy.

Both remineralize. Both fight cavities. One was discovered in 1909, the other on a NASA payload. A grown-up comparison.

It's not whitening. It's tinting. Why blue covarine makes teeth look paler for a few hours and what it actually does to enamel.