The Mouth OS Journal

Why Your Mouth Feels Terrible on Long Flights (and What Actually Helps)

Cruise-altitude cabin humidity runs 10% to 20%. Here is what the aviation and dental authorities actually say about the stale post-flight mouth, plus a three-part framework and a practical long-hau...

Why Is Toothpaste Still Sold in a Tube?

The collapsible tube was invented for oil paint in 1841 and reached toothpaste in the 1890s. It solved a real Victorian hygiene problem. It has barely changed since, and the design's age is doing q...

Can You Bring Toothpaste on a Plane? The TSA Liquid Rule, Explained

Toothpaste counts as a paste under TSA 3-1-1, and TSA names it directly. Here is what the rule says, the quart-bag arithmetic almost nobody runs, and a packing checklist built on it.

The Hidden Epidemic: Why Oral Health Is Not Just About Your Smile

Oral disease is the most common health condition on the planet, affecting roughly half of all people. What the numbers actually say, and why the tools deserve a rethink.

Why Your Toothpaste Tube Can't Be Recycled

You rinse the tube and bin it, but it almost never gets recycled. The 130-year-old design flaw that sends 1.5 billion tubes to landfill every year.

Your Toothpaste Is Mostly Water. Here's the Problem.

Water is one of the two largest ingredients in most toothpaste, and you rinse it straight down the drain. A look at what's really in the tube, what it costs, and where it ends up.