Braces that is, orthodontic appliances, wear orthodontic appliances more than a year after the gums bleed more than, may be due to poor oral cleaning caused by periodontitis caused by the following. Orthodontic appliances are generally used for orthodontic treatment, including brackets, arch wires, and attachments such as traction hooks, which have a certain impact on the daily cleaning of the oral cavity, and the accumulation of food debris, plaque, tartar, etc. around the gums can lead to the occurrence of periodontitis. When periodontitis occurs, patients may have bleeding gums when brushing or eating, and the gums may become red, swollen and flabby, with different degrees of enlargement and hyperplasia. There may be other reasons why the gums bleed for more than a year after wearing orthodontic appliances, so it is recommended to go to the hospital in time, to clarify the cause of the disease and then carry out targeted treatment.