I am also a full tooth, that is, after anesthesia during tooth extraction, it hurts for a while and I can survive; It's much better to wear braces after that. But be sure to pay attention to the toothbrush after meals (not immediately, it will destroy the enamel, wait a little), otherwise the food residue left on the appliance will make you get gingivitis; Be sure to take more Vc to keep your gums healthy. If you are a girl, this is also a good opportunity to lose weight!
The time is about 1~2 years.
I made it in Beijing, but the registration and filming costs are all inclusive (18 years old or older), I don't know Shandong!