Bhattacharjee Rajashree, Phukon Kuldeep, Kashyap Arpita
Orthodontics and Dentofacial Orthopedics, Government Dental College, Silchar, Guwahati, IND.
Orthodontics and Dentofacial Orthopedics, Regional Dental College, Guwahati, Guwahati, IND.
Cureus. 2025 Aug 22;17(8):e90781. doi: 10.7759/cureus.90781. eCollection 2025 Aug.
This article aims to illustrate a case of mandibular canine transmigration crossing the midline and erupting labially to the lower incisors and discuss its general prevalence, etiology, and orthodontic management. Cases of canine transmigration are rare and mostly occur due to retained deciduous predecessors or dental lamina aberrations. This anomaly is appropriately diagnosed radiographically. As canines are significant for masticatory function, arch stabilization, and esthetics, it is imperative to preserve them by orthodontic correction or surgical transplantation, unless the prognosis is appalling. A 13-year-old girl presented with extra erupting teeth in the front lower teeth region. A transmigrated 43 across the mandibular midline erupted labially to 31, confirmed by orthopantomogram and cone beam computed tomography. Thirty-three erupted mesially and labially to 32. Treatment involved the extraction of retained 83 and transplantation of 43, along with the application of traction force to bring 33 into its anatomical position.
本文旨在阐述一例下颌尖牙移位穿过中线并唇向萌出至下切牙唇侧的病例，并讨论其总体患病率、病因及正畸治疗方法。尖牙移位病例较为罕见，大多由于乳牙滞留或牙板异常所致。这种异常通过影像学检查可得到恰当诊断。由于尖牙对咀嚼功能、牙弓稳定及美观具有重要意义，因此除非预后极差，否则必须通过正畸矫治或外科移植来保留它们。一名13岁女孩在前下牙区出现额外萌出的牙齿。曲面体层片和锥形束计算机断层扫描证实，一颗移位的43牙穿过下颌中线唇向萌出至31牙处。33牙向近中及唇侧萌出至32牙处。治疗包括拔除滞留的83牙、移植43牙，并施加牵引力将33牙牵引至其正常解剖位置。
