Mouthful

Science

Ingredients

What’s actually in the tube, and which parts are doing the work.

Editorial illustration: silver amalgam metal texture macro

Real, Rare, and Usually Something Else

Allergy to a filling is real and rare, with a specific presentation. Far more often the symptom blamed on it has a mechanical explanation that takes minutes to fix.

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It Works by Making You Drool

Sugar-free gum after a meal is one of the few genuinely evidence-backed habits nobody bothers with. It works by making you produce saliva, not by cleaning anything.

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A Small Real Effect and a Very Large Claim

Oil pulling trials find a small real effect on plaque and breath, and nothing on whitening. What it does not do is remove anything from your body.

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The Burn Is Not the Working Part

The sting people read as proof it works is a solvent, not an active. Three kinds of mouthwash, and only one has strong evidence behind it.

Editorial illustration: two toothpaste tubes side by side macro

Fluoride Hardens It. Hydroxyapatite Puts It Back.

Fluoride has seventy years of evidence. Hydroxyapatite is what enamel is actually made of. They don't do the same job, and most people are asked to pick one.

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The Sugar That Starves the Bacteria

Nobody markets it hard, yet it keeps turning up in threads where people compare notes. It's the only sweetener the cavity bacteria can't use.

Editorial illustration: A cracked chalk-white fossil tooth in black sand, its enamel surface glittering like tiny glass

Your Enamel Is 97% One Mineral. You Can Buy It.

Your enamel is 97% hydroxyapatite. Putting it back is a real idea with real evidence — and a label full of numbers that mostly nobody explains.