随着生活水平的提高,人们对牙齿美观的要求越来越高,牙颌畸形患者迫切需要得到矫治,但在治疗中由于固定矫正器的戴入,导致患者出现牙龈炎症状,影响牙周组织的健康。目前,这种医源性疾病正日益引起人们的关注。1发病病因由于固定矫治器的存在使刷牙较矫治前困难,并影响自洁作用, With the improvement of living standards, people are demanding on the aesthetic appearance of teeth, orthodontic patients in urgent need of correction, but in the treatment of fixed orthosis wear, resulting in gingivitis symptoms, affecting periodontal tissue Health. At present, this iatrogenic disease is increasingly a cause for concern. 1 The etiology of the fixed appliance because of the presence of brushing more difficult than before correction and affect the self-cleaning effect,