Wisdom teeth, some people call it "standing teeth". Someone may ask: why don't I have wisdom teeth when I'm 30? Is it not long? I sorted out why some people don't have wisdom teeth_ The reasons for not having wisdom teeth are welcome to learn from.
Why don't some people have wisdom teeth
It is difficult to define with the naked eye whether wisdom teeth are long or not
In ancient times, because human food was not fine enough, more teeth were needed to grind and chew, so wisdom teeth were produced. The diet structure of modern people is gradually refined, and wisdom teeth have gradually lost their use and become the residue of human evolution. Therefore, some people's wisdom tooth embryos have disappeared, and some people will not grow wisdom teeth for a lifetime.
However, the number, time and state of wisdom teeth germination vary according to individual physique. Because human alveolar bone has different degrees of degradation in length, width and strength compared with ancient times, some wisdom teeth usually can not sprout normally and lie under the gingival tissue structure, making you think you don't have wisdom teeth. Therefore, it is difficult for us to determine whether we have wisdom teeth by the naked eye alone. If we want to know whether we have wisdom teeth or not, the most reliable way is to go to the hospital to take a dental film and check it.
Should wisdom teeth be removed?
In fact, the vast majority of wisdom teeth need to be removed. When your wisdom teeth have dental caries (tooth decay), cause adjacent tooth lesions, lack of space, cause periodontal inflammation, local difficult to clean, no pair of teeth, wisdom teeth are impacted, cause other lesions, orthodontic needs, those suspected to be the cause of neuralgia of unknown cause due to obstruction, or suspected to be diseased teeth, they need to be removed immediately.
However, if your wisdom teeth can sprout normally and establish an occlusal relationship, or at least do not bring the risk of pain and infection and affect other teeth, you can not remove them. Just maintain them well.
Reasons for not having wisdom teeth
Wisdom tooth is the last tooth to sprout out of human teeth. It is the third molar and the eighth tooth from the front tooth (if you don't have this tooth, it doesn't grow). Theoretically, it will grow four (two up and two down).
However, in reality, some people grow 4, some people grow 2, and some people have no chance to see it in their life (it is so casual). Why can it not play cards according to the routine?
Because it is a 'degenerated' tooth. When humans could only eat raw meat and bark, it was no different from our other molars, helping us chew hard food. At that time, human oral space was not as small as it is now, and it was closer to orangutans (it was also similar in appearance). So it has enough reason and space to grow.
As humans have evolved and learned to use fire and tools to process rough food, they no longer need too many molars to deal with rough food, but rely more on our brain (accurately speaking, it should rely on the tools produced by the brain).
Therefore, with the evolution of human beings, the human brain is getting larger and larger, the space of oral cavity is getting smaller and smaller, and wisdom teeth are gradually disappearing from our oral cavity (so if it wants to grow, it also needs to see whether there is space).
Nowadays, wisdom teeth are no longer very important to us. They only bring us pain more often (so you don't have to worry if you don't have wisdom teeth).
Because the narrow oral space of modern people has really no room for it. Once hard and straight wisdom teeth, now they can only slant or cross, or even leak a little bit of head, and sometimes they can't even show their head. At this time, the more tenacious it grows, the more painful we will be. The pain is so intense that you want to 'break' it immediately (if your wisdom teeth are 'tall and straight', it shouldn't hurt so much).