I am a dentist. It is best to correct your teeth. If the teeth are overcrowded, the possibility of tooth extraction is very high. However, there is no need to extract the front teeth. Usually the fourth tooth on both sides is extracted, which does not affect the appearance of the front teeth. The price of full-mouth correction varies in each region. In Wuxi, it is 4000-6000. It is difficult to distinguish. Please go to a regular hospital to ask for details. ask. It's a little late for correction at the age of 22, so you have to hurry up if you want to look beautiful.