Well, if there are too many teeth and the front teeth are everted, of course they should be pulled out. The key is too many teeth or narrow dental arch. If the dental arch is narrow, the two behind the tiger teeth should be pulled out.

Well, like you said, it means extra teeth. You must pull out the extra teeth and give them to the front teeth. It's simple. There won't be cracks. Generally speaking, the cost of orthodontics varies from region to region. Hospitals are more expensive, high-end clinics are more expensive, and small clinics are cheaper, but the treatment effect is not guaranteed. But you also need to see a doctor. Need to find a special orthodontist for treatment. The cost is 3000 yuan.