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does using salt-based tooth powder scratch your teeth?

I have soft enamel and I am looking for a natural tooth powder that, at the very least, won't further damage my enamel. Most tooth powder recipes I've seen use sea salt as an abrasive. I've also heard from dentists that salt is too abrasive and will scratch your teeth microscopically. Is this true? Could I grind the salt finely before using or would that defeat the whole purpose?

Grathio7 years ago
1) Always trust what your dentist says over what random people on the internet say.

2) However, on Mohs scale of hardness salt is between 2-3, teeth are at least a 5. Mohs scale says that things with a higher number scratch things with a lower number. Since salt is well below tooth enamel, teeth should be plenty safe. Your teeth are not that delicate or they wouldn't have held up to years of eating.
Both very important points.

Tooth enamel is usually an incredibly hard substance- it's composed of crystal bound together with protein.

Your dentist has some reason for concern, though. First of all, with a homemade powder, you may not be getting enough fluoride on your teeth. If this is the case, your dentist may be getting a new car or house soon. Tea is a good natural source (but for your teeth, keep it unsweetened!), even if your groundwater isn't.

But secondly, if your teeth are exposed to acid conditions, particularly soda and the waste produced by sugar-eating bacteria, they will temporarily be much more fragile. Acid-damage is like a microscopic layer of your tooth enamel turning to chalk. Fluoride can help prevent this, but not repair the damage. A mixture called "casein phosphopeptide-amorphous calcium phosphate" has been shown to help your body remineralize the enamel, but your best bet may be simply rinsing and saliva.