1, wisdom teeth, if the position is good, the upper and lower occlusal relationship is normal, of course, it is not necessary to pull out. But if the position is not good, I suggest you pull it out, because bad wisdom teeth will bring some inconvenience to your later life, such as inflammation when your own resistance drops. I can also tell you that wisdom teeth in the mouth have no effect under normal circumstances, so removal will not hinder your oral function. According to medical knowledge, wisdom teeth are the teeth that people begin to grow in adulthood. The average child will grow 28 teeth after deciduous teeth fall off, and adults will grow 4 teeth, that is 32, which means you have grown up!

2. In medicine, wisdom teeth are also called the third molar, the eighth tooth counted inward from the gap between the two front teeth. Wisdom tooth is the last permanent tooth among 32 human permanent teeth, which is located on the last side of the upper, lower, left and right dental arch. Because wisdom teeth are mostly around 16 ~ 24 years old when they grow up, people's wisdom is also referred to as wisdom teeth when they grow up. In the process of human evolution, as the food becomes more and more refined, the burden on the jaw bone decreases accordingly, which leads to the continuous reduction of the bone mass of the jaw bone, but the size of the teeth does not decrease with it, which eventually leads to the lack of teeth eruption. The third molar that finally erupts is the most likely to form pericoronitis of wisdom teeth, which is the main reason for the abnormal eruption position of wisdom teeth. The origin of wisdom teeth refers to the four third molars on the innermost alveolar bone in human mouth, one on the top, one on the bottom, one on the left and one on the right. Because these four third molars just began to erupt around the age of 20, people's physical and psychological development is close to maturity at this time, so they are regarded as a symbol of "wisdom arrival", so they are called "wisdom teeth". In fact, from the perspective of modern medicine, wisdom teeth are the necessity of human evolution. As we all know, it is a universal law in the theory of biological evolution to "use in the process and abandon in the process". Wisdom teeth are an excellent example.

3, wisdom teeth, the scientific name of the third molar, commonly known as wisdom teeth, vertical teeth, full-head teeth, is the tooth closest to the throat, if all grow a ***4, two upper and lower jaws, generally in 16 years old or later. Compared with deciduous teeth and permanent teeth replaced in childhood, wisdom teeth usually grow when human mind is mature, hence the name. There are great differences among individuals in the growth of wisdom teeth. Some people grow up before the age of 20, some people grow up at the age of 40 or 50, and some people never grow up. This is normal. Moreover, not all four wisdom teeth will grow out completely. Some people's wisdom teeth may be only 1 2, and some wisdom teeth even stop growing when they are half grown. This condition is called impacted wisdom teeth. The position of wisdom teeth starts from the gap between the front teeth and counts the number of teeth inward from one side of the front teeth. If there is an eighth tooth, it is a wisdom tooth.

The incidence of impacted wisdom teeth is high, and its harm is mainly manifested in the following points.

(1) Recurrent pericoronitis. A blind pocket is formed between the soft tissue around the impacted wisdom tooth crown and the teeth, which leads to the accumulation of food and bacteria. Pericoronitis is inevitable when the resistance drops. The general anti-inflammatory treatment is to treat the symptoms rather than the root cause, so pericoronitis will recur.

(2) Dental caries. It is easy to accumulate food residues between wisdom teeth and second molars, and it is not easy to clean them. Generally, dental caries can form in a few months, which directly destroys tooth tissue.

(3) Impacted wisdom teeth often fail to establish a normal occlusal relationship with the opposite jaw teeth, which may lead to symptoms such as snapping of temporomandibular joint, mouth opening pain and bruxism. For a long time, this has had a great influence on the physical and mental health of teenagers.

(4) There is evidence that some impacted wisdom teeth are the focus of some trigeminal neuralgia.

The mandible holding the teeth is getting smaller and smaller, and it is an inevitable result that wisdom teeth are impacted. Extraction of impacted wisdom teeth has no adverse effect on mastication, language and other functions, and extraction is the most effective method to treat impacted wisdom teeth. Therefore, it is suggested that impacted wisdom teeth should be removed decisively as soon as possible.

Cancel the suggestion

Try to keep your teeth, and don't pull them out if you can, because tooth extraction may hurt your nerves. So many people often ask: should wisdom teeth be pulled out? Usually, dentists will recommend the removal of wisdom teeth for the following reasons:

1. Tooth decay: If wisdom teeth are decayed, we recommend pulling them out, except for simple cavities with shallow occlusal surface, those adjacent teeth that need good skills, and those with deep cavities that even need root canal treatment, so as to prevent future troubles.

2. Adjacent tooth invasion: Usually, the patient does not know, but is diagnosed by the dentist with X-ray. Usually, wisdom teeth don't have enough space to germinate, but they will fall on the second molar, which makes the second molar difficult to clean and even partially absorbed by the teeth, bringing discomfort or toothache to patients.

3. Lack of space: wisdom teeth are in a state of disappearance in the history of human evolution. Therefore, the dental arch is getting smaller and smaller, and the lack of space is very common. Swelling and pain can be felt most when sprouting. Many people decide to have their wisdom teeth removed because they can't stand the pain.

4, cleaning is not easy: due to lack of space, wisdom teeth often grow crooked, so it is often difficult to clean teeth, leading to tooth decay.

5, no teeth: As I said before, not everyone will have four wisdom teeth. Therefore, on the opposite side of wisdom teeth, if there is no competitive wisdom teeth occlusion, sometimes wisdom teeth will erupt excessively, affecting occlusion.

6, impacted teeth: usually this is the most annoying one, dentists will find it difficult to repair, but patients may not feel, so they ignore it. This type of tooth is usually buried in alveolar bone. If it hurts, or a lesion is diagnosed, it needs to be removed.

Need to know when to quit.

If you want to pull out wisdom teeth, you must find a professional dentist. Moreover, after tooth extraction, attention should be paid to:

1, usually the longer the extraction time, the longer the swelling time, especially for impacted teeth.

Within one hour, all blood and saliva should be swallowed. Don't rinse your mouth to help blood clots and wounds heal.

Ice for one hour after going home, and then use hot compress if you feel uncomfortable.

If you have a fever, you can call in sick the next day.

5. Gingival inflammation is not suitable for wisdom tooth extraction. Take anti-inflammatory drugs before tooth extraction to eliminate inflammation.

6, can not pull wisdom teeth during menstruation.

Preservable wisdom teeth

After extracting wisdom teeth, you may still have questions: If there are no symptoms, is it unnecessary to extract them?

If you are in the position of a doctor, he will generally advise you to unplug it to avoid future troubles, so it is a painful and lifelong immunity. However, if you think wisdom teeth are not in the way, then you can decide whether to pull them out or not. So, what kind of wisdom teeth are worth keeping?

1, the position is relatively positive, and it is expected to explode normally.

2. There is no history of inflammation and pain in the soft tissue around the crown of wisdom teeth, and there is no dental caries in wisdom teeth.

3, wisdom teeth with molars.

Complications caused by wisdom teeth

The impacted or dislocated wisdom teeth of dental caries are easy to make food residues embedded in the interdental space and periodontal space between the second molar and wisdom teeth, which is difficult to remove and often leads to dental caries. According to the survey; The average caries rate of mandibular second molars is 65438 06.4%, with significant differences among different ages, only 3.7% at the age of 20 and as high as 27% at the age of 50. It can be seen that the removal of impacted or dislocated wisdom teeth is the key to prevent the caries of the second molar, and shallow caries may not develop.

Maldentition is the most active period of wisdom teeth eruption at the age of 14- 18, but the space for wisdom teeth eruption is limited due to the imbalance of jaw bone mass and tooth quality. Therefore, the driving force of wisdom teeth eruption is often one of the main reasons for the crowded and irregular arrangement of teeth. The continuous driving force of this eruption movement is only 4 ~ 5 grams, which is enough to affect the second molar. Therefore, the dislocation and torsion of the second molar are more common, accounting for about 20% of patients with dentofacial malformation, of which about 80% occur in the mandibular second molar; Most of them are teenagers, and women are about 1.6 times that of men. The dislocation of the second molar will reduce the contact area of the upper and lower jaws and obviously reduce the chewing function of people.

During the development of tooth germ that absorbed mandibular wisdom teeth from adjacent teeth and supporting tissues, the long axis of the teeth was originally inclined forward, and only when the mandible developed sufficiently did it gradually erupt upright. When it is blocked by the second molar during eruption, tooth-destroying cells attached to the root surface of the second molar will be produced there. Tooth-destroying cells can release lysozyme and gradually absorb the root, and in severe cases, they can completely absorb the distal root of mandibular second molar. Moreover, chronic periodontitis, which often exists between impacted wisdom teeth and second molars, can also cause inflammatory absorption of alveolar bone.

Craniomandibular disorder: Impacted or dislocated mandibular wisdom teeth often interfere with the maxillary second molar, leading to pathological retraction of the mandible, which is one of the reasons leading to craniomandibular disorder. The main clinical manifestations are snap of temporomandibular joint, pain and abnormal mandibular movement, masticatory muscle pain, tinnitus, tongue pain and other symptoms. After extraction of impacted or dislocated wisdom teeth, many patients have achieved remarkable results because of blocking the potential factors that lead to the disorder of craniomandibular relationship.

Cystic lesions around wisdom teeth The odontogenic cystic lesions of the jaw are prone to unexplored embedded teeth, and the mandibular wisdom teeth have the highest probability of being blocked from erupting, which is obviously the main prone site. When the cyst develops to a certain extent, the jaw can be swollen and deformed, and once it is infected, it will cause repeated swelling and pain, and even cause pathological fractures in severe cases.

The gingival and buccal mucosa with precancerous lesions and dislocation of wisdom teeth can cause ulcers, erosion, abnormal tissue proliferation and leukoplakia due to long-term mechanical stimulation or repeated occlusion of crown margin. Such a long-term wound repair and re-trauma process will affect the normal keratinization of oral mucosa epithelium, cause precancerous lesions, and then induce oral mucosa canceration.

When pericoronitis of wisdom teeth is impacted, wisdom teeth can erupt in different directions, such as vertical, forward, horizontal, horizontal and inverted. When it partially erupts, the periphery of the crown is often covered by gingival tissue to varying degrees, thus forming a gingival pocket between the crown and the gum. When the depth exceeds 2 ~ 3 mm, it often leads to lesions. Because food residues are easy to hide in this bag and bacteria are easy to multiply, inflammation will occur when the gum bag is traumatized or the body's resistance decreases. The onset age of pericoronitis of wisdom teeth is 20 ~ 25 years old, and almost 95% of it occurs in mandible. It is often manifested as swelling and pain of pericoronal tissue, which affects chewing and swallowing, and is often accompanied by systemic symptoms such as difficulty in opening mouth, fever and swelling of forest. If the inflammation is not controlled in time, it can also spread to the jaw and neck, resulting in inter-tissue infection, osteomyelitis of the jaw, and even serious systemic complications such as sepsis and pericarditis.