When you take a look at the ingredients in toothpastes, one of the most common is fluoride. Basically, this is a naturally occurring mineral which can even be found in water and air. Fluoride is also considered a mineral because the human body needs it to grow and develop properly.
Over the last five decades or so, fluoride has become staple ingredient in oral care products because it contributes to the dramatic drop in the rates of tooth decay and cavity occurrence. Let's say that you did not use a toothpaste which has fluoride in it or you did not brush your teeth at all. What happens is that the bacteria in our mouth will feed on sugars, starches and other food particles which remained on your teeth after eating.
Now that you already have an idea about how fluoride works, how else does it help prevent your teeth from decaying? Some people think that if the water in their area already contains fluoride, they can already skip on using toothpastes which has fluoride in it.
In fact, the opposite is true. Even if you live in an area where the presence of fluoride as a mineral content in water is high, you can still benefit from fluoride being a main ingredient in the toothpaste that you are using.
As mentioned earlier, demineralization occurs when the mouth acids attack the crystals which compose the enamel of your teeth. When these minerals are lost, the body starts to deposit calcium and other minerals into the teeth – but if they are note replaced sufficiently, that is when decay occurs.
If you're interested in how fluoride affects your teeth you canread more here
More information about oral hygiene in general can be found here
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