Adults can straighten their teeth. There is no age limit for straightening teeth. As long as the periodontal tissues are healthy and there are no diseases such as periodontitis, you can have your teeth straightened. Generally speaking, between the ages of 12 and 22 is the prime time for orthodontic treatment, and the older you are, the longer it will take. Adults straighten their teeth by wearing braces, which are categorized as wire braces, invisible braces, self-ligating brackets, etc. According to their own dental conditions, they should choose the appropriate orthodontic method under the guidance of professional doctors. During the orthodontic period, you should pay attention to oral hygiene to prevent oral diseases such as dental caries and periodontitis, and if there is any discomfort during the orthodontic process, you should go to the hospital in time.