Some people have swollen faces and cannot open their mouths, not knowing that they have wisdom teeth, so they go to the drip after the swelling, and find a surgeon to cut and drain the pus after it becomes septic, resulting in repeated attacks, and some even spend thousands of dollars before finally finding a dentist and having the tooth extracted to solve the problem completely. Wisdom tooth is the last tooth to erupt in people’s mouths, because it usually erupts at the age of 18-30 years old, compared to other teeth, people at this age are already mentally mature, so called “wisdom tooth”, that is, the third molar. Wisdom teeth are usually four up and down, some people grow one to three is normal, and some people do not grow wisdom teeth. The most common disease caused by incomplete eruption of wisdom teeth is pericoronitis. The uneven wisdom teeth and the neighboring teeth can easily cause food congestion, plus the wisdom teeth are located at the very back of the tooth row, which is not easy to self-clean and brush. The accumulation of food over a long period of time causes bacteria to multiply and eventually leads to the development of pericoronitis. When the body’s resistance decreases, such as prolonged travel, car rides, late nights, girls’ menstrual periods, colds, etc., pericoronitis of the wisdom teeth is prone to attack, and its typical symptoms are pain, swelling, pus overflow, bad breath, etc. These illnesses often make people suffer and have trouble sleeping and eating. The first thing you need to do is to make sure that your teeth are in good condition before you have a baby, so that they are filled, pulled out and treated to ensure that you don’t get a toothache during pregnancy. If you have a toothache when you are pregnant, your doctor will not dare to give you medicine or take a film for fear that it will be bad for the child, but if you have a toothache and cannot eat or sleep well, not only will it be difficult to ensure the child’s nutrition, but the baby will also “suffer from your pain” in the womb. Other cases are recommended to remove wisdom teeth: 1, tooth decay: If wisdom teeth decay, in addition to very simple occlusal surface decay not deep can be filled, those adjacent surface decay, need very good technology, and decay very deep, and even need root canal treatment, we always recommend extraction, to eliminate 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 remove 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, usually buried in the alveolar bone, needs to be removed if it is painful or if a lesion is diagnosed. In the case of swollen and painful gums caused by wisdom teeth, it is recommended that the wisdom teeth be removed after the inflammation is eliminated.