After orthodontics can moderate intake of calcium-rich foods, try not to eat too hard food, as follows. 1. Moderate intake of calcium-rich foods: the alveolar bone has been in the process of orthodontic remodeling, soy milk, milk, beef, chicken, fish, eggs and other foods can provide calcium, moderate intake will help the alveolar bone health. 2. Should not eat too hard food: orthodontic brackets are generally bonded to the tooth surface through adhesives, too hard food, such as bones, nuts, etc., may cause the brackets to fall off, or even lead to deformation of the archwire, which will have an impact on the effect of orthodontic treatment. If you need orthodontic treatment, it is recommended to visit a regular medical institution to receive professional treatment.