King's College Hospital, St Thomas' Hospital and Whipps Cross Hospital, London, UK.
King's College Hospital & Royal Surrey County Hospital, London, UK.
J Orthod. 2021 Dec;48(4):403-409. doi: 10.1177/1465312521996365. Epub 2021 Mar 5.
Dental transpositions are rare anomalies, which may present to the general dental practitioner or orthodontist. Transpositions occur less frequently in the mandible compared with the maxilla, with the most common mandibular transposition involving the mandibular lateral incisor and canine. The degree of displacement can vary from a relatively minor deviation to complete transposition of the mandibular lateral incisor with the adjacent canine tooth. Due to their highly visible position at the front of the mouth, treatment, ideally involving alignment of these teeth, is important for aesthetic, social and functional purposes. This case series reports six cases with mandibular lateral incisor-canine transposition. They demonstrate the variety in presentation and subsequent management of the ectopic teeth. The importance of early diagnosis in combination with interceptive treatment is discussed, to reduce the burden of potentially lengthy orthodontic treatment at a later date.
牙齿转位是一种罕见的异常现象，可能会出现在普通牙医或正畸医生面前。与上颌相比，下颌的牙齿转位发生得较少，最常见的下颌牙齿转位涉及下颌侧切牙和尖牙。移位的程度可以从相对较小的偏差到下颌侧切牙与相邻尖牙的完全转位不等。由于它们位于口腔前部，位置非常显眼，因此治疗这些牙齿对于美观、社交和功能目的都很重要，理想情况下需要对齐这些牙齿。本病例系列报告了 6 例下颌侧切牙-尖牙转位病例。它们展示了异位牙的不同表现和后续处理方法。讨论了早期诊断结合预防性治疗的重要性，以减少日后可能需要长时间正畸治疗的负担。
