口腔科临床工作中常可遇到牙外伤。12﹪～33﹪儿童存在牙外伤,10.8﹪正畸治疗的患儿有牙外伤史[1]。这些患者中多数只是牙釉质折裂/缺损,对正畸治疗无明显影响。然而,一些患者因外伤而错位的牙或错位牙的外伤都会使正畸治疗更加复杂,需要多名口腔专科医师协作才能完成治 Dental trauma can often be encountered in clinical work. Tooth trauma occurred in 12% -33% of children and dental trauma occurred in 10.8% of children treated with orthodontics [1]. Most of these patients only enamel fracture / defect, no significant effect on orthodontic treatment. However, some patients with traumatic dislocation of the teeth or dislocation of teeth trauma will make the orthodontic treatment more complex, requiring more than a dental specialist collaboration to complete the treatment