To add to Dr Enrica’s excellent and detailed answer, it’s also important to understand that just because the gaps are closed and the teeth look straight, it doesn’t mean your braces are complete!
It’s important to stay the course and let your orthodontist finish your case, to ensure that your teeth bite together (interdigitate) evenly and in a balanced manner.
This helps to ensure that you’ll have a healthy, stable smile in long term. So do be patient (pun not intended), it’ll take awhile but a good result, with proper retention, will last your whole life!
All the best,
Dr JD