Crooked teeth at the age of 6 can be observed regularly, but if serious deformity occurs, orthodontic or surgical treatment is needed. 1. Regular observation: During the period of 6-12 years old, when milk teeth are gradually falling out and permanent teeth are gradually erupting, there may be cases of crooked teeth during this process, which can be observed on a regular basis. Because the teeth have the ability to straighten themselves during the tooth replacement stage, the teeth may gradually grow back together over time. 2. Orthodontic treatment: If there is an occlusal deformity, such as what is commonly known as “geodesic”, which is manifested by the lower teeth biting on the outer side of the upper teeth, early orthodontic treatment is required in this case, and functional braces, fixed braces or invisible braces will be worn under the guidance of a professional dentist to straighten the teeth in a timely manner. 3. Surgical treatment: If the deformity of teeth is serious, you can go to the hospital through surgical orthodontics or orthognathic, to achieve the purpose of straightening teeth. Generally, there is no need for special treatment for crooked teeth at the age of 6. If the degree of deformity is found to be aggravated during observation, which affects daily life, it is recommended that the patient go to a regular medical institution for orthodontic treatment.