Hello, if the doctor's operation is not standardized, or the patient does not take good care after orthodontics, it will cause orthodontic harm: 1. Effect on dental pulp: At the initial stage of treatment, there will be mild or temporary inflammatory reaction in dental pulp. 2. Influence on the root: After treatment, the root will return to normal with its own repair ability, but if the stress during treatment is too large, it will increase the risk of root absorption. 3. Influence on the height of alveolar bone: The height of alveolar bone will decrease slightly for those who have received orthodontic treatment. 4. Teeth become loose.