Wisdom teeth are in an awkward position and it is inconvenient to get them cleaned and treated. Since wisdom teeth are in the inner most part of the mouth, they are often not cleaned by daily brushing, which makes them susceptible to cavities, and the gums are often swollen and inflamed due to the lack of space for them to grow. Some people can't bear the pain and go to the hospital to have them removed by a dentist. Here are some characteristics of wisdom teeth that are suitable for removal.

　　1. Caries (tooth decay): If the wisdom tooth is decayed, in addition to the very simple occlusal surface of the cavity is not deep can be filled, those adjacent to the surface of the cavity, need very good technology, as well as the cavity is very deep, or even the need for root canal treatment, we always recommend that the extraction, to eliminate future problems.

　　2. Causing lesions on neighbouring teeth: Usually, the patient is not aware of the lesions, but the dentist will diagnose them with X-ray. Usually, the wisdom teeth do not have enough space to erupt and will fall on the second molars, thus causing the second molars to be difficult to clean or even partially resorbed, resulting in discomfort or toothache.

　　3. Insufficient space causes peri-coronary inflammation: Wisdom teeth are in a state of extinction in the evolutionary history of mankind. As a result, the dental arch is also getting smaller and smaller, and the lack of space is very common. The patient will experience swelling and pain during eruption. In order to avoid the recurrence of such a situation, it is recommended to go to the hospital for extraction as soon as possible after the inflammation has subsided.

　　4. Localised cleaning: Due to the lack of space, wisdom teeth are usually not in the right position, which often makes it difficult to clean the teeth, resulting in tooth decay.

　　5. No opposing teeth: Not everyone's four wisdom teeth will grow in unison. Therefore, if there is no opposing wisdom teeth to bite against, the wisdom teeth will sometimes over-erupt and elongate, which will affect the bite, and should be extracted at this time.

　　6. Wisdom tooth obstruction: This is usually the most troublesome type. This type of tooth is usually buried in the alveolar bone and must be removed if inflammation occurs frequently or if a lesion is diagnosed.

　　7. Causes other pathologies: if the wisdom tooth causes an odontogenic cyst or a tumour, it will need to be removed.

　　Orthodontic needs: Wisdom teeth are usually extracted for orthodontic needs and to ensure the effectiveness of orthodontic treatment.

　　9. Because of the obstruction is suspected to be the cause of unexplained neuralgia, or suspected to be the foci of the tooth, should also be removed.

　　Warm tips: tooth extraction may affect the nerves and memory, so do not blindly go looking for a dentist to remove your wisdom teeth if you find that you have suddenly grown wisdom teeth. First of all, you should observe whether wisdom teeth will affect your daily life, and then go to the hospital for consultation, and decide whether to pull out the teeth under the doctor's instruction.