Because there are germs everywhere.
Your mouth is a dark, moist place. Bacteria live in dark, moist places.
Mouth. Feet.
Bacteria is always present in the mouth.
The salt temporarly alkalinizes the mouth, which is the opposite environment bacteria likes to live in. The salt also helps your injured gums heal.
Bacteria in the mouth are emitting waste gases that smell bad. The bacteria can be on the teeth, in cavities, on the tongue, on the palate or on the gums, especially if these are inflamed. Bacteria can also live on prosthetic teeth.
The mouth is an ideal habitat for bacteria, as it is moist, has a constant temperature and a constant supply of nutrients.
There are bacteria and and the cells of the body in the mouth.
A dog's mouth is cleaner because it contains less bacteria although these bacteria are more harmful to humans
Bacteria are everywhere dude! They are in the air and in your food so why not in your mouth? Every time you open your mouth bacteria get in. So shut your mouth! Oh, and don't breathe through your nose either, because they will get in there too.
Conversely, good bacteria can help you avoid dental diseases. Specifically, the good bacteria inside your mouth will regulate the effects of bad bacteria. This is extremely important because your mouth will never be completely free from bacteria. This means that keeping your mouth full of good bacteria can help you fight off disease.
Depending on what the bacteria has on their cellular wall, you aren't going to destroy it with your enzyme. Most bacteria are probably killed by other bacteria living in the mouth ecosystem.
The human mouth typically contains more bacteria than the human anus. The mouth provides a warm, moist environment that bacteria thrive in, while the anus has a lower bacterial population due to its exposure to digestive enzymes and regular bowel movements that help to flush out bacteria.