It is no problem to correct your present age. Generally speaking, if you correct it, you have to do it with your mouth full to achieve the desired effect. If you only do the first four, the gap between the front teeth will go somewhere else. In addition, if the gap between the front teeth is still large at this age, the main reason is either that there are many middle teeth; Either the attachment point of the upper lip ligament is low; Or big bones and small teeth, it is necessary to analyze the specific situation!
Now that you have an invisible appliance, you can consult a doctor, so you don't have to wear metal braces, which may also solve your problem.
If your problem is really not very big, it will probably take 1 year to correct it, and the gap in the front teeth is still easy to recur, sometimes it needs lifelong maintenance! !