The mouth is full of bacteria. Even after you brush and floss your teeth, bacteria will still be there. Fortunately, not all of them are bad.
Good bacteria are defined as bacteria that benefit health. Actually, most bacteria are good bacteria. Comparatively speaking, of the total bacteria in the body, 85 percent can be considered good, while only 15 can be called bad. As for the bad bacteria that dwell in the mouth, there are two general types—gram-positive bacteria and gram-negative bacteria.
- Gram-positive bacteria (those that do not have a fatty exterior layer) are the ones that cause dental plaque and weaken teeth, which can lead to cavities and accelerated tooth decay.
- Gram-negative bacteria (those that contain a fatty outer layer) prefers to make their home under the gum line. Gram-negative bacteria produce smelly gas and are the source of bad breath.
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