27 years old, as long as there is no problem with periodontal disease, it can be corrected. Time may be a little slower than children, but it varies from person to person. As for the price, it will vary from 3,000 to 5,000 depending on the region, clinic and illness. It is recommended to go to a regular stomatological hospital or outpatient clinic for consultation. Although the price is a bit expensive, the quality will be guaranteed.