The four teeth that were originally extracted were to correct the teeth to their normal positions and leave gaps. These four teeth are always extracted during tooth correction. It is probably necessary to extract these four teeth now. As long as wisdom teeth have grown in, most of them need to be removed. Think about it for yourself, why do wisdom teeth grow in from the back? All the spaces before have been occupied by normal teeth, and the teeth that grow from the back have to occupy the space. You spent 2-3 years and so much money on the whole process. Would you be willing to have your good teeth ruined just because of these 4 teeth? Of course, a full-mouth X-ray must be taken before wisdom teeth extraction, so that the doctor can handle it more easily. As for whether you are worried about whether there will be problems with other teeth, you can rest assured that the cavity after the tooth is extracted will slowly calcify into bone, which will not have a great impact on your front teeth. If you want your teeth to remain strong as you age, you have to maintain good oral hygiene yourself, and no one else can help you with this.