If the wisdom teeth are erupted and have ectopic growth or obstruction, they should be extracted as soon as possible. If the wisdom teeth are growing orthotropically and there are opposite wisdom teeth that can perform the chewing function normally, they can be removed without extraction. If the innermost teeth erupt, it is best to remove them. The innermost teeth are usually wisdom teeth, also called risers, which erupt at the age of about 16-18 years. Due to the factors of human evolution nowadays, the jaw bone is not as big as before, which makes the wisdom tooth easy to have ectopic growth, obstruction, and burial, etc. It is also likely to cause the contact relationship between the wisdom tooth and the surrounding neighboring teeth to be abnormal, which will easily lead to food embedment and eventually lead to the occurrence of tooth decay, pulpitis, and pericoronitis of the wisdom tooth, and the possibility of tooth decay, pulpitis, tooth loosening, and periodontitis of the neighboring teeth.