How much does it generally cost to correct crowded teeth according to its correction is divided into the following three cases: 1, patients through active orthodontic treatment, simple orthodontic treatment can generally be 2000-3000 yuan; 2, conventional orthodontic treatment, patients who are fixed orthodontic treatment, the cost is generally about 15-20,000 yuan; 3, invisible orthodontic treatment, patients who need to use invisible orthodontic treatment, there are more than 30,000 yuan or more than 40,000 yuan orthodontic appliances, each hospital’s fees are also different, depending on the patient’s situation.