1, wisdom tooth
Wisdom tooth refers to the innermost third molar tooth on alveolar bone in human mouth, which is just the eighth tooth from the central incisor. Because it broke out very late, it usually broke out between 16 and 25 years old. At this time, people's physical and psychological development is close to maturity, which symbolizes the arrival of wisdom, so it is commonly known as "wisdom teeth". In addition, wisdom teeth are often called "impacted teeth" because they are usually not straight and tend to squeeze the good teeth in front. On the next X-ray, wisdom teeth are circled in red.
However, the growth of wisdom teeth is very different from that of individuals. Some wisdom teeth are growing, while others are lying down. Usually there should be four teeth that are symmetrical up and down, some have less than four or none, and very few people will have more than four. The eruption age also varies greatly. Some people break out before the age of 20, while others are in their forties or fifties or have a short life span. This is a normal phenomenon. Wisdom teeth are redundant teeth in most cases and do not undertake occlusal function. It is precisely because of the great variation of wisdom teeth that it usually has a certain impact on our oral health. So what is the harm of this wisdom tooth? Or why do you have to pull out your wisdom teeth? It can be roughly divided into the following reasons.
2. The first danger
Pericoronitis of wisdom teeth The so-called pericoronitis of wisdom teeth means that the crown of wisdom teeth cannot be completely exposed due to impaction, and the gum around the crown is bag-shaped, which is easy to accumulate food and nourish bacteria. Acute pericoronitis is caused by the decrease of systemic resistance. Patients usually show limited mouth opening, redness and pain in the wisdom tooth area, and in severe cases, pus will overflow from the blind pocket area of the wisdom tooth, and even cause systemic symptoms such as fever. At this time, it is necessary to diminish inflammation in time and then remove wisdom teeth.
If pericoronitis of wisdom teeth does not attract our attention, the inflammation of pericoronitis may further spread to the muscle space, causing space infection, which is the second kind of harm. Don't underestimate this space infection. Severe interstitial infection is in danger of spreading downward to the mediastinum, causing mediastinitis, pericardial effusion and even systemic septicemia and death. Although the probability is not great, it is very dangerous once it happens. Therefore, in order to prevent the spread of inflammation, we must treat it as soon as possible.
3. The second danger
Impacted wisdom teeth with anterior teeth are prone to caries of adjacent teeth (mandibular second molar) because of frequent accumulation of food between adjacent teeth. Therefore, in order to prevent the good teeth that exercise chewing function from being damaged, wisdom teeth should be removed as soon as possible. In addition, if the wisdom tooth itself has decayed, then don't keep it, but pull it out to avoid local lesions.
4. The third danger
It is related to the biomechanics of wisdom teeth. If only one side has wisdom teeth, it is necessary to remove them to avoid food impaction between them and the adjacent teeth in front. At the same time, because wisdom teeth have no chewing function, there is no need to keep them. In addition, patients with orthodontic teeth sometimes remove their wisdom teeth because of the need of orthodontics, so as to prevent the crowding of dentition caused by wisdom teeth and affect the orthodontic effect.
In addition, wisdom teeth are at risk of diseases such as jaw cyst, osteomyelitis and temporomandibular joint disease. Combined with the previous types of harm, it can be said that most wisdom teeth are to be pulled out. Early pulling out can cause the above irreversible harm. It is worth mentioning that women usually have all their wisdom teeth pulled out before pregnancy, because it will be very difficult to get sick during pregnancy, which will easily affect the health of mothers and children. Young people around the age of 20 are the age when most people's wisdom teeth sprout, and it is also the time to go to school in other places or abroad. If there is acute inflammation, their parents are often very anxious. Therefore, it is suggested to remove impacted wisdom teeth as early as possible to eliminate the harm of wisdom teeth.
5. Wisdom teeth that must be pulled out
1, often painful wisdom teeth
Many wisdom teeth will be swollen and painful when they erupt, which will affect their lives. In order to prevent this from happening again, it is recommended to take it out as soon as the inflammation subsides.
2. Caried wisdom teeth
Wisdom teeth have cavities, which can be filled if the occlusal surface is not deep, but the adjacent cavities need good filling skills, and it is better to pull them out than to fill them. If the caries of wisdom teeth are deep, root canal treatment is needed, and it is also recommended to remove them.
3. The wisdom teeth of adjacent teeth are damaged.
Usually the patient doesn't know, but the dentist knows through X-ray diagnosis. Generally, there is not enough space for wisdom teeth to germinate and fall on the second molar, which makes the second molar difficult to clean and even decay. This wisdom tooth should be extracted in time to avoid further damage to adjacent teeth and affect tooth health.
4. Wisdom teeth without right teeth
Not everyone has four wisdom teeth. Therefore, if there is no competitive bite of wisdom teeth, wisdom teeth will germinate excessively, which will affect the normal bite. Such wisdom teeth need to be pulled out.
5. Wisdom teeth can cause other diseases.
If wisdom teeth cause odontogenic cysts or tumors, they also need to be removed.
6. Wisdom teeth that are not easy to clean
Because of the lack of space, wisdom teeth are usually dislocated, which often makes it difficult to clean teeth and is a hidden danger of tooth decay.
7. impacted wisdom teeth
Usually this situation is the most annoying, even dentists will find it difficult to fix, but patients may not feel it.
This type of tooth is usually buried in alveolar bone. If inflammation often occurs or lesions are diagnosed, they must be removed.
8. Which wisdom teeth don't need to be pulled out?
If young people pull out their first tooth for other reasons before their wisdom teeth grow out, there is no need to pull out their wisdom teeth, because wisdom teeth will automatically move forward to replace the pulled teeth. In addition, if there is enough space for wisdom teeth to grow and it does not affect occlusion, you can choose to keep them on the premise of paying attention to cleanliness.