28-year-old, female, slightly protruding teeth, can it be corrected? The main reason is that the teeth will loosen after correction. Do you have any brothers and sisters who have had their teeth corrected in their twenties? 28 years old can be corrected. Orthodontics will not cause tooth loosening. My friend has finished orthodontics for several years, and his teeth are still as strong as before. I am now 2 1 year-old, and I am doing correction. It's been worn for half a year. The effect is very good. You should be mentally prepared that orthodontics is a long experience, at least one and a half years. The older you get, the longer it takes.