Canine transposition as an alternative to trauma of the maxillary incisors: case report

ABSTRACT Objective: The present article aims at reporting the clinical case of a patient who suffered trauma at two years of age, causing almost complete apical displacement of the deciduous maxillary left central incisor and of the permanent incisor. Methods: Ectopia secondary to intrusion was minimized by surgical removal of the ectopic tooth, and the left permanent canine was submitted to orthodontic traction to replace the extracted tooth. Results: The treatment period lasted 36 months, resulting in correct occlusion and a good aesthetic outcome. Conclusions: Dental transposition carried out by means of orthopedic traction is a good alternative in cases of a very unfavorable ectopic tooth position.

摘要
研究目的：本文旨在报告一例2岁时遭受外伤的患者的临床病例，该患者上颌左侧乳中切牙及恒切牙几乎完全发生根尖向移位。
方法：针对因牙嵌入性脱位继发的异位情况，通过手术拔除异位患牙，并对左侧恒尖牙实施正畸牵引以替代拔除的患牙。
结果：本次治疗周期共计36个月，最终患者咬合关系恢复正常，美学效果良好。
结论：通过正畸牵引实施的牙齿转位术，对于异位牙位置极不理想的病例而言，是一种优良的治疗选择。