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A patient with mandibular deviation and 3 mandibular incisors treated with asymmetrically bent improved superelastic nickel-titanium alloy wires.

Abstract Skeletal and dental discrepancies cause asymmetric malocclusions in orthodontic patients. It is difficult to achieve adequate functional occlusion and guidance in patients with congenital absence of a mandibular incisor due to the tooth-size discrepancy. Here, we describe the orthodontic treatment of a 22-year-old woman with an asymmetric Angle Class II malocclusion, mandibular deviation to the left, and 3 mandibular incisors. The anterior teeth and maxillary canines were crowded. We used an improved superelastic nickel-titanium alloy wire (Tomy International, Tokyo, Japan) to compensate for the asymmetric mandibular arch and an asymmetrically bent archwire to move the maxillary molars distally. A skeletal anchorage system provided traction for intermaxillary elastics, and extractions were not needed. We alleviated the crowding and created an ideal occlusion with proper overjet, overbite, and anterior guidance with Class I canine and molar relationships. This method of treatment with an asymmetrically bent nickel-titanium alloy wire provided proper Class I occlusion and anterior guidance despite the mandibular deviation to the left and 3 mandibular incisors, without the need for extractions.
PMID
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Authors

Mayor MeshTerms

Nickel

Orthodontic Wires

Titanium

Keywords
Journal Title american journal of orthodontics and dentofacial orthopedics : official publication of the american association of orthodontists, its constituent societies, and the american board of orthodontics
Publication Year Start




PMID- 29287639
OWN - NLM
STAT- MEDLINE
DCOM- 20180112
LR  - 20180112
IS  - 1097-6752 (Electronic)
IS  - 0889-5406 (Linking)
VI  - 153
IP  - 1
DP  - 2018 Jan
TI  - A patient with mandibular deviation and 3 mandibular incisors treated with
      asymmetrically bent improved superelastic nickel-titanium alloy wires.
PG  - 131-143
LID - S0889-5406(17)30799-0 [pii]
LID - 10.1016/j.ajodo.2017.07.016 [doi]
AB  - Skeletal and dental discrepancies cause asymmetric malocclusions in orthodontic
      patients. It is difficult to achieve adequate functional occlusion and guidance
      in patients with congenital absence of a mandibular incisor due to the tooth-size
      discrepancy. Here, we describe the orthodontic treatment of a 22-year-old woman
      with an asymmetric Angle Class II malocclusion, mandibular deviation to the left,
      and 3 mandibular incisors. The anterior teeth and maxillary canines were crowded.
      We used an improved superelastic nickel-titanium alloy wire (Tomy International, 
      Tokyo, Japan) to compensate for the asymmetric mandibular arch and an
      asymmetrically bent archwire to move the maxillary molars distally. A skeletal
      anchorage system provided traction for intermaxillary elastics, and extractions
      were not needed. We alleviated the crowding and created an ideal occlusion with
      proper overjet, overbite, and anterior guidance with Class I canine and molar
      relationships. This method of treatment with an asymmetrically bent
      nickel-titanium alloy wire provided proper Class I occlusion and anterior
      guidance despite the mandibular deviation to the left and 3 mandibular incisors, 
      without the need for extractions.
CI  - Copyright (c) 2017 American Association of Orthodontists. Published by Elsevier
      Inc. All rights reserved.
FAU - Ikeda, Yuhei
AU  - Ikeda Y
AD  - Department of Orthodontic Science, Graduate School of Medical and Dental
      Sciences, Tokyo Medical and Dental University, Tokyo, Japan. Electronic address: 
      [email protected]
FAU - Kokai, Satoshi
AU  - Kokai S
AD  - Department of Orthodontic Science, Graduate School of Medical and Dental
      Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
FAU - Ono, Takashi
AU  - Ono T
AD  - Department of Orthodontic Science, Graduate School of Medical and Dental
      Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
LA  - eng
PT  - Case Reports
PT  - Journal Article
PL  - United States
TA  - Am J Orthod Dentofacial Orthop
JT  - American journal of orthodontics and dentofacial orthopedics : official
      publication of the American Association of Orthodontists, its constituent
      societies, and the American Board of Orthodontics
JID - 8610224
RN  - 12035-60-8 (titanium nickelide)
RN  - 7OV03QG267 (Nickel)
RN  - D1JT611TNE (Titanium)
SB  - D
SB  - IM
MH  - Female
MH  - Humans
MH  - Incisor/*abnormalities
MH  - Malocclusion, Angle Class II/complications/*therapy
MH  - Mandible/*abnormalities
MH  - *Nickel
MH  - Orthodontic Appliance Design
MH  - *Orthodontic Wires
MH  - Orthodontics, Corrective/instrumentation/methods
MH  - *Titanium
MH  - Tooth, Supernumerary/complications/*therapy
MH  - Young Adult
EDAT- 2017/12/31 06:00
MHDA- 2018/01/13 06:00
CRDT- 2017/12/31 06:00
PHST- 2017/02/01 00:00 [received]
PHST- 2017/07/01 00:00 [revised]
PHST- 2017/07/01 00:00 [accepted]
PHST- 2017/12/31 06:00 [entrez]
PHST- 2017/12/31 06:00 [pubmed]
PHST- 2018/01/13 06:00 [medline]
AID - S0889-5406(17)30799-0 [pii]
AID - 10.1016/j.ajodo.2017.07.016 [doi]
PST - ppublish
SO  - Am J Orthod Dentofacial Orthop. 2018 Jan;153(1):131-143. doi:
      10.1016/j.ajodo.2017.07.016.