Is the dog's mouth cleaner than human's?

It is said that dogs eat dirty things such as dead animals, but their mouths are still cleaner than people's. Even if people often brush their teeth, or pick their teeth and use tooth cleaning products, the result is still the same. It sounds like a dental miracle, so is it really as rumored? This is obviously impossible.

Simply put, the number of bacteria in the mouth of dogs is similar to that of humans, and they will also suffer from dental diseases similar to humans. Scientists think it's like comparing apples with oranges. Although there are a lot of the same bacteria in the two species, it doesn't matter which oral cavity is cleaner. Because people and dogs have microbes in their mouths, and in most cases, the bacteria in dogs' mouths are different from those in people. Porphyromonas is an example. This is a kind of rod-shaped bacteria, which can cause periodontal disease, serious gum infection, loose teeth, and finally make people and animals lose their teeth. Scientists have found this bacterium in two different species: Porphyromonas gingivalis in human dental plaque, and its sibling Pseudomonas gulei in dog's mouth. These two kinds of bacteria will multiply in periodontal tissue and devour gums, eventually making teetering teeth fall off. ?

Dogs' mouths need to be cleaned regularly.

Although there is no theory to prove that dog breeds are closely related to periodontal disease, puppies and old dogs are usually at higher risk. And the common dental caries of human beings, dogs are not easy to suffer. According to the report released by the World Health Organization in 2003, dental caries will affect 90% of primary school students in the world, but only 5% of dogs. The reason is complicated, but most scientists think it is because the dog's mouth lacks bacteria. The culprit is Streptococcus mutans, which splits a large sugar molecule into two smaller sugar molecules and produces acid in the process. Therefore, this kind of bacteria evolved into a slightly acidic environment during reproduction. So it will end up in the mouth of a person with more acidity, not in the mouth of a dog in an alkaline environment. ?

Another related rumor is that being bitten by a person is more contagious than being bitten by a dog. But this statement obviously cannot stand scrutiny. According to the veterinarian, the risk of being bitten by people and dogs depends on the type of bacteria in the mouth and the depth of the wound. So no matter what you are bitten by, you must remember to clean the wound thoroughly afterwards. If you feel the wound touching the muscle, go to the hospital as soon as possible.

There are still some problems worthy of attention. Although the food that dogs eat now is generally purchased dog food, owners usually clean their dogs' mouths regularly. However, don't get too close to dogs and try to avoid kissing dogs. Also, don't let dogs lick their mouths, let alone their wounds, which is a great threat to our own health. As for the saying that a dog's mouth is cleaner than a man's, there is no need to take it seriously.