How long does it take to correct tooth curvature? Which way is better? Which city will have lower cost?
It takes one and a half to two years to wear braces and two years to wear retainers, which adds up to about four years! Nanjing and Shanghai should be above 4000! We all have at least 3000 yuan here, and big cities must be high. Orthodontic teeth also have different classifications, and the price will be different!