Invisible braces is just a gimmick, and the proportion of suitable cases is less than 5%, which is very small. All private hospitals or clinics doing network promotion use this signboard. Hey hey. . . . . .
Charge the bar.
Only doctors who really master lingual correction technology can do real invisible correction. Basically, 95% of mistakes and deformities can be solved, and 80% can be done well. The remaining 5% is the indication of surgery plus correction, not the problem that orthodontics can solve alone. Hohhot has, only a few people can do it, so ask more. If you are lucky and persistent, you will find it. Finally, tell you, it's normal. Okay, the price won't be very expensive, but it won't be very cheap either.
Finally, I wish you find a serious and responsible doctor.