(Question) Are there possible side effects after orthodontic treatment?

Hello, I finished my orthodontic treatment a few years ago. At the time, my teeth became much more aligned, and I was very satisfied.

However, as time went by, I became worried that I might experience side effects later on.

When I search online, I see mentions that teeth can shift back into place, gums may recede, or the tooth roots may be affected. I am curious to know the actual extent of this. I have also seen reviews stating that the jaw joint became uncomfortable or that the sensation of chewing changed due to a shift in the bite.

I don't have any particular pain right now, but it worries me because sometimes my teeth feel weaker than before. Even though I wear my retainer consistently, could this cause problems later on?

For those of you who finished your orthodontic treatment a long time ago, how is your current condition? Did you experience any side effects or discomfort years after the treatment, or is your result being maintained well without any major issues?

I would be grateful if you could let me know if there are any specific areas I absolutely need to pay attention to when caring for my teeth after orthodontic treatment. I would appreciate any real-life experiences or advice you can share. Thank you.