First, after tooth extraction and filling can take the airplane? Generally after tooth extraction (or after filling), due to the difference in air pressure between high altitude and land (the air pressure in the high air is relatively low, when the atmospheric pressure is lower than the internal pressure of the human body, the pressure inside the body will produce a certain amount of expansion) in this case, it will cause pain or even tearing of the wound, resulting in bleeding. This pain or bleeding disappears after the airplane lands. Warm tips: 1. If it is not a complicated tooth and the postoperative reaction is not heavy, a short flight is not a big problem. 2. If it is a long airplane, people are very tired and have a bad rest, which is also bad for wound healing. 3. It is generally recommended to travel 3 days after tooth extraction. No matter what transportation. Second, there is dental disease, but no tooth extraction or filling, when flying, will feel toothache? Some people, on land do not feel pain, or the symptoms are very mild, but in the flight process of toothache or aggravation of the disease, this is because they themselves suffer from deep caries (cavities), endodontic treatment is not perfect, apical inflammation, blocked teeth, acute pulpal inflammation, or fissure, they encounter changes in air pressure, then the pain is produced significantly. The medical term for this kind of toothache that occurs while traveling on an airplane is ‘aviation toothache’ or ‘aeroacoustic toothache’. Therefore, when you often experience toothache while flying in an airplane, you should go for checkups and treatment.