Many people experience tooth pain when they have wisdom teeth, and the pain is in the area of the wisdom teeth. Why do wisdom teeth cause toothache? The following is an introduction to the causes of wisdom tooth tooth pain. The causes of wisdom tooth pain are currently categorized into the following four major aspects: tooth decay, encroachment on neighboring teeth, lack of eruption space, and lack of pair of biting teeth. 1, tooth decay: wisdom teeth are often used to, and long in the inside is not easy to clean, this is exactly the wisdom teeth easy to grow cavities important reason. If the wisdom tooth decay, except for the very simple occlusal surface not deep decay can be filled, those adjacent surface of the wisdom tooth decay, in addition to the need for good treatment technology, even if the treatment may not be able to receive good results; this case of decay is often deeper in the degree of destruction, and some even need to root canal treatment. Therefore, it is necessary to find a dentist to check the situation when the wisdom tooth is painful. 2. Invasion of neighboring teeth: Since wisdom teeth destroy neighboring teeth more slowly, patients usually do not know it themselves, and it is not always possible to accurately diagnose it during clinical examination, and it can only be diagnosed by taking X-ray dental films. The eruption space of wisdom teeth is usually insufficient and will be on top of the penultimate molars, thus causing the second molars to be difficult to clean and even partial resorption of teeth, resulting in discomfort or toothache for the patient. 3, insufficient eruption space: human beings in the history of evolutionary evolution, due to the increasing fineness of food, the dental arch is also getting smaller and smaller, the lack of space is very common, wisdom teeth belong to the fading state, in the process of eruption is easy to be limited by the lack of position and gum swelling, painful feeling. This is not the reason why the teeth are easy to become malformed, maybe or maybe not, there are many reasons that lead to malformed teeth. 4, no pair of teeth: the number of people’s wisdom teeth for 1 to 4, not everyone four wisdom teeth will grow together. Therefore, the opposite of the wisdom teeth, if there is no corresponding wisdom teeth counterbalance, many times will occur wisdom teeth over-eruption, and thus affect the upper and lower jaw teeth bite relationship.