As a preservation of food expenses since ancient times

There is salting.

If there is a lot of salt

It cannot breed and will die.

Use this

I was storing food.

Just like this

Candied fruits etc.

Dried fruits are also preserved foods

Become.

Normally, there is a high concentration of sugar in the mouth

When present in

Bacteria in the mouth

You should die.

But

Caries bacteria break down this sugar

Make acid and create a high-concentration sugar environment

Change.

And

Melt the teeth with the acid produced at that time

Make cavities.

Also

The acid makes the environment a lot.

Easy to remove and live with caries bacteria

Prepare the environment.

By the way

Greatly extended human life

One factor is

It seems that it was the invention of the refrigerator.

This allows you to avoid salting

Food preservation has become easier

Longevity due to reduced salt intake

It seems that it has become easier to do.

The same is true for cavities

The lower the sugar intake

The risk of dental caries seems to decrease.

Kuri Dental Clinic