Synodinos Philippos N, Polyzois Ioannis
Dublin Dental School & Hospital, Lincoln Place, Dublin 2.
J Ir Dent Assoc. 2010;56(6):264-7.
Transposition is defined as the interchange of position between two adjacent teeth within the same quadrant of the dental arch. Permanent maxillary canine-premolar transposition is the most commonly observed transposition in the human dentition. Its prevalence is relatively low and its aetiology remains unclear, although it has been associated with genetic factors. It may also be related to a combination of localised factors such as malformation of adjacent teeth, tooth agenesis, retention of the deciduous canine and a history of local trauma. Treatment is selected on an individual case basis after thoroughly considering the overall facial and dental characteristics, duration of treatment, cost, patient preference and the orthodontist's experience. This article provides a case report of maxillary canine transposition in the permanent dentition, successfully managed with orthodontic treatment.
牙齿易位被定义为牙弓同一象限内两颗相邻牙齿位置的互换。恒牙上颌尖牙-前磨牙易位是人类牙列中最常见的易位情况。其患病率相对较低，病因尚不清楚，尽管它与遗传因素有关。它也可能与局部因素的综合作用有关，如相邻牙齿畸形、牙齿缺失、乳牙滞留以及局部创伤史。在充分考虑整体面部和牙齿特征、治疗时长、费用、患者偏好以及正畸医生的经验后，根据具体病例选择治疗方案。本文提供了一例恒牙列上颌尖牙易位的病例报告，该病例通过正畸治疗成功得到处理。
