What are the hazards of orthodontics?

Beauty crown is needed after orthodontics, which may lead to insufficient blood supply to teeth and obvious tooth necrosis. Some patients will have obvious loosening of teeth after orthodontics, and even have black gums. In the process of orthodontics, it will stimulate the tooth core, cause periodontitis, and gradually develop into periapical periodontitis, and the teeth will be painful from then on. If left unchecked, it is easy to cause pus.