Not necessarily.

If an adult has severe skeletal buck teeth, orthodontics cannot be done and should be done before the age of 13.

If the problem is uneven, protruding, open jaws, large gaps between teeth, etc., adults can undergo orthodontic treatment without age restrictions.

Search: Orthodontics in Guiyang, Nanning and Guilin with a lump sum price of 5,000 yuan for reference