Ectopic Eruption of transposed mandibular lateral incisors

Mandibular permanent lateral incisors showing bilateral transposition and ectopic eruption were seen beside deciduous first molars in a female aged 8yr 8month. Repositioning of the ectopic lateral incisor is difficult not only because of its distal displacement and severe rotation but also because of the potential development of transposition with the erupting canine. This paper is focused on the diagnosis of the ectopic eruption and advocates treatment with active orthodontic management at the early stage of mixed dentition, before the eruption of the permanent cuspid.

하악 측절치의 transposition은 매우 드믄 맹출장애이지만, 하악 견치의 맹출장애를 초래할 수 있고, 심미적, 기능적인 심각한 문제를 유발하므로 조기 진단 및 조기치료, 장기간의 유지장치가 바람직하다.