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Original Research

Open Access

Uprighting horizontally impacted third molars by super-elastic nickel-titanium wire in patients with an extracted first molar

  • Yunhe Zhao1
  • Huimin Mao1
  • Houxuan Li1
  • Lang Lei1,*,

1Nanjing Stomatoloigcal Hospital, Affiliated Hospital of Medical School, Nanjing University, 210000 Nanjing, Jiangsu, China

DOI: 10.22514/jocpd.2024.006 Vol.48,Issue 1,January 2024 pp.41-51

Submitted: 07 April 2023 Accepted: 13 June 2023

Published: 03 January 2024

*Corresponding Author(s): Lang Lei E-mail:


Protracting lower second molars and uprighting horizontally impacted third molars is a significant orthodontic challenge in patients who require the extraction of severely decayed first molars. Here, we describe the use of biomechanics to upright 90◦-tilted lower third molars following second molar protraction. Herein, we introduce a technique for uprighting the lower third molars by (1) the placement of superelastic nickel titanium archwires, (2) bonding, and (3) repositioning of a buccal tube in a tilted position to compensate for the efficiency of Ni-Ti (nickel-titanium) wire. The treatment mechanics used for our two cases showed that even severely impacted third molars can be uprighted by routine continuous straight-wire techniques. This technique proved to be a simple, efficient and reliable treatment option for uprighting horizontally impacted third molars.


Upright; Horizontal impaction; Third molar; Orthodontic

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Yunhe Zhao,Huimin Mao,Houxuan Li,Lang Lei. Uprighting horizontally impacted third molars by super-elastic nickel-titanium wire in patients with an extracted first molar. Journal of Clinical Pediatric Dentistry. 2024. 48(1);41-51.


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