A 15-year follow up of an orthodontic treatment including a lower incisor extraction and keeping the maxillary canine-premolar transposition

Soonshin Hwang, Insil Kim, Woowon Jang, Yoon Jeong Choi, Chooryung J. Chung, Kyung Ho Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Lower incisor extraction is an effective option for treating lower anterior crowding in patients with a good facial profile, Class I molar occlusion, and narrow upper incisors. This report describes the successful treatment of an adolescent patient with lower anterior crowding and a transposed maxillary canine and premolar treated by extracting a lower incisor and keeping the transposed positions of the teeth. With the use of retainers, treatment results were stable up to the 2-year postretention visit. However, upon a 15-year postretention appointment, the fixed retainer had been removed and the removable retainer was no longer in use, which resulted in relapse of lower anterior alignment. Moreover, the transposed canine had extruded during this period, causing occlusal interference and gingival recession, as well as loss of tooth vitality, which indicates the importance of maintaining orthodontic retainers for long-term stable occlusion.

Original languageEnglish
Pages (from-to)812-826
Number of pages15
JournalAngle Orthodontist
Volume89
Issue number5
DOIs
Publication statusPublished - 2019

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP; Ministry of Science, ICT & Future Planning) (NRF2017R1D1A1B03030851). The author declares no potential conflicts of interest with respect to the authorship and/or publication of this article.

All Science Journal Classification (ASJC) codes

  • Orthodontics

Fingerprint Dive into the research topics of 'A 15-year follow up of an orthodontic treatment including a lower incisor extraction and keeping the maxillary canine-premolar transposition'. Together they form a unique fingerprint.

Cite this