Wisdom teeth refer to the four third molars on the innermost alveolar bone in the human mouth, one on each side. Because these four third molars begin to erupt at the age of about 20, when the physical and mental development of human beings is close to maturity, they are regarded as a symbol of the “arrival of wisdom” and are therefore called “wisdom teeth”. -The tooth of wisdom. In fact, from the point of view of modern medicine, wisdom teeth is the inevitable evolution of human beings. As we all know, “survival of the fittest” is a universal law in the theory of biological evolution. Wisdom teeth are an excellent example of this, so what are the benefits of wisdom teeth extraction? As we all know, “survival of the fittest” is a universal law in biological evolution. Wisdom teeth are an excellent example of this, so what are the benefits of wisdom teeth extraction? Wisdom teeth, the scientific name of the third molar, commonly known as the wisdom teeth, risers, end teeth, is the tooth closest to the throat, if all grow out a total of four, two in the upper and lower jaws, usually grow out at the age of 16 or later. In contrast to the baby teeth that emerge in early childhood and the permanent teeth that are replaced in childhood, wisdom teeth usually emerge when the human mind is already mature, hence the name. The growth of wisdom teeth varies greatly from one person to another, with some growing before the age of 20, some growing at 40 or 50, and some not growing for life. Some people may have only one or two wisdom teeth, and some wisdom teeth may even stop growing halfway, which is called wisdom tooth blockage. The location of the wisdom teeth from the incisors, from one side of the incisors to the number of teeth, if there is an eighth tooth, it is the wisdom teeth wisdom teeth obstruction of the incidence of higher, its harm is mainly manifested in the following points. 1, repeated episodes of pericoronitis. The soft tissue around the crown of the blocked wisdom tooth and the teeth form a blind pocket, causing the accumulation of food, bacteria, resistance to decline, the emergence of pericoronitis is inevitable. The general anti-inflammatory treatment can treat the symptoms but not the root cause, so pericoronitis will recur. 2.Tooth decay. It is easy to accumulate food residue between the wisdom tooth and the second molar in the wrong position, and it is not easy to clean, so it can form caries in several months and directly destroy the tooth tissue. 3.The obstructed wisdom teeth often cannot establish normal occlusal relationship with the teeth of the opposite jaw, which can lead to the symptoms of popping of temporomandibular joint, painful opening of mouth and night grinding for a long time, which has a great impact on the physical and mental health of young adults. 4. There is evidence that some obstructed wisdom teeth are the foci of some trigeminal neuralgia. The jawbone that holds the teeth continues to degenerate and become smaller, so wisdom teeth obstruction is the inevitable result. Removal of obstructed wisdom teeth does not have any adverse effect on the functions of chewing and speech, plus it is the most effective way to treat obstruction, therefore, it is recommended to remove the obstructed wisdom teeth that cause the above mentioned hazards as early and decisively as possible. Diseases caused by wisdom teeth are often caused by cavities (commonly known as tooth decay), periodontitis, and pulpitis: since wisdom teeth are in the innermost part of the teeth, it is not easy to clean them with daily brushing, and they are prone to cavities, and wisdom teeth are often swollen and painful due to the lack of space for eruption, and they also invade neighboring teeth, causing toothache. Sometimes wisdom teeth may over-erupt due to the lack of opposing teeth, which may affect the bite; sometimes they may under-erupt and become blocked teeth, causing malocclusion, pericoronal space infection, and difficulty in opening the mouth. Wisdom teeth are the third molars and have an important influence on the adjacent second molars. Since most of the wisdom teeth are anteriorly inclined and obstructed, they are placed at an angle of about 45 degrees on the second molar, thus forming a crown angle, which is easy to embed food and lead to decay of the second molar and even pulpitis in the long run, which will affect the life span of the second molar even if it is not that serious. Extracted teeth should be preserved as much as possible, and not extracted if you can, because extracting teeth may hurt the nerve and memory. Therefore, many people often ask: Should I have my wisdom teeth removed? Usually, dentists will recommend the extraction of wisdom teeth for the following reasons: 1. Tooth decay: If the wisdom teeth are decayed, except for the simple decay on the occlusal surface that is not deep enough to be filled, we recommend the extraction of all the teeth that are decayed on the adjacent surface and require good technique, as well as those that are decayed so deeply that they even require root canal treatment, in order to eliminate any future problems. 2. Invasion of adjacent teeth: Usually the patient is not aware of it, but the dentist can diagnose it by X-ray. Usually there is not enough space for the wisdom teeth to erupt and they fall on the second molars, thus causing the second molars to be difficult to clean and even partial resorption of the teeth, causing discomfort or toothache to the patient. 3, lack of space: wisdom teeth in the evolutionary history of mankind, is a state of fading. Therefore, the dental arch is also getting smaller and smaller, and the lack of space is very common. The swelling and painful feeling can be felt most when taking eruption. Many people decide to extract their wisdom teeth because they cannot tolerate this painful feeling. 4.It is not easy to clean: Due to the lack of space, wisdom teeth often grow crooked, so it is often difficult to clean teeth, resulting in the occurrence of tooth decay. 5. No pair of teeth: As mentioned earlier, not everyone’s four wisdom teeth will grow together. Therefore, if there is no opposing wisdom tooth to bite the opposite side of the wisdom tooth, sometimes excessive eruption of the wisdom tooth will occur, which will affect the bite. 6, obstructed teeth: usually this is the most annoying kind, the dentist will find it difficult to handle, but the patient does not necessarily feel, so ignored. This type of tooth is usually buried in the alveolar bone and needs to be removed if it is painful or if a lesion is diagnosed. If you want to have your wisdom teeth removed, you should go to a professional dentist. And, you should pay attention after the extraction: 1. Usually, the longer the extraction, the longer the swelling will be, especially for obstructed teeth. 2. Within one hour, all blood and saliva should be swallowed. Do not rinse your mouth to help blood clotting and wound recovery. 3.After going home, apply ice compress for one hour, and then use hot compress if you are not comfortable afterwards. 4.If you have a fever, you can take sick leave to rest the next day. 5. It is not suitable to remove wisdom teeth when the gums are inflamed, and anti-inflammatory drugs should be taken after the inflammation is eliminated 6. Wisdom teeth cannot be removed during menstruation. After the wisdom teeth that can be retained are finished, perhaps you still have questions: if there are no symptoms, is it not necessary to pull them? If you are in the position of a doctor, he will usually advise you to have them removed to avoid the aftermath, so it is once painful, lifetime immunity. However, if you feel that your wisdom tooth is not hindering you, then you can decide for yourself whether to remove it or not. So, what kind of wisdom teeth are worth keeping? 1. Those with a relatively positive position and expected to erupt normally. 2.No history of inflammation and pain in the soft tissue around the crown of the wisdom tooth, and no decay of the wisdom tooth. 3.Wisdom teeth that have a pair of biting teeth.