Orthodontics itself does no harm to teeth, but irregular treatment may do harm to teeth. So we need to find a professional orthodontist to correct our teeth. In some cases, such as severe tooth crowding, the protrusion must be corrected by tooth extraction. If the tooth is not extracted, not only will the deformity not be corrected, but some teeth that have been painstakingly squeezed out will soon return to their original deformed appearance. After pulling out the tooth, there is a gap. Generally, gear shaping is not required. After the calibration is completed, most of the gaps will be completely closed. Therefore, you don't need to worry about tooth extraction at all.