The precursor of wisdom teeth growth is mainly swelling and pain in the gums around the wisdom teeth, and some people can be asymptomatic. 1. With the fine diet, jawbone and teeth are beginning to degenerate, some people are born without wisdom teeth, and most of those who have wisdom teeth erupt at the age of 17 to 21 years old, due to the last eruption of teeth, jawbone gap most of the insufficient, resulting in wisdom teeth obstruction, coupled with the location of the back of the oral cavity, the difficulty of cleaning, the gums are often swollen and painful discomfort. 2. Gums can be found protruding from the mirror, and those with inflammation are bright red and swollen, with symptoms of pressure and pain. Some people with strong resistance or good oral hygiene have only slight discomfort or no symptoms. It is recommended to keep the mouth clean, use salt water or chlorhexidine to rinse the mouth when the wisdom teeth are uncomfortable, and go to the regular hospital stomatology examination, if it is clear that the obstruction, it is recommended to pull out as soon as possible.