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Expanding torque possibilities: A skeletally anchored torqued cantilever for uprighting "kissing molars".

Abstract Several uprighting mechanics and devices have been used for repositioning tipped molars. "Kissing molars" (KMs) are an uncommon tooth impaction involving 2 severely tipped mandibular molars with their occlusal surfaces positioned crown to crown, with the roots pointing in opposite directions. Orthodontic uprighting of KMs has not been a usual treatment protocol, and it can be a challenging task due to the severe tipping and double impaction, requiring efficient and well-controlled uprighting mechanics. An innovative skeletally anchored cantilever, which uses the torque principle for uprighting tipped molars, is suggested. This torqued cantilever is easy to manufacture, install, and activate; it is a well-known torque that is effective for producing root movement. A successful treatment of symptomatic KMs, involving the first and second molars, was achieved with this cantilever. Thus, clinicians should consider the suggested uprighting mechanics and orthodontic device as a more conservative alternative to extraction of KMs, depending on the patient's age, involved teeth in KMs, tipping severity, and impaction positions.
PMID
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Authors

Mayor MeshTerms

Torque

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- 29602351
OWN - NLM
STAT- MEDLINE
DCOM- 20180409
LR  - 20180409
IS  - 1097-6752 (Electronic)
IS  - 0889-5406 (Linking)
VI  - 153
IP  - 4
DP  - 2018 Apr
TI  - Expanding torque possibilities: A skeletally anchored torqued cantilever for
      uprighting "kissing molars".
PG  - 588-598
LID - S0889-5406(18)30002-7 [pii]
LID - 10.1016/j.ajodo.2017.12.006 [doi]
AB  - Several uprighting mechanics and devices have been used for repositioning tipped 
      molars. "Kissing molars" (KMs) are an uncommon tooth impaction involving 2
      severely tipped mandibular molars with their occlusal surfaces positioned crown
      to crown, with the roots pointing in opposite directions. Orthodontic uprighting 
      of KMs has not been a usual treatment protocol, and it can be a challenging task 
      due to the severe tipping and double impaction, requiring efficient and
      well-controlled uprighting mechanics. An innovative skeletally anchored
      cantilever, which uses the torque principle for uprighting tipped molars, is
      suggested. This torqued cantilever is easy to manufacture, install, and activate;
      it is a well-known torque that is effective for producing root movement. A
      successful treatment of symptomatic KMs, involving the first and second molars,
      was achieved with this cantilever. Thus, clinicians should consider the suggested
      uprighting mechanics and orthodontic device as a more conservative alternative to
      extraction of KMs, depending on the patient's age, involved teeth in KMs, tipping
      severity, and impaction positions.
CI  - Copyright (c) 2018 American Association of Orthodontists. Published by Elsevier
      Inc. All rights reserved.
FAU - Barros, Sergio Estelita
AU  - Barros SE
AD  - Department of Orthodontics, Faculty of Dentistry, Federal University of Rio
      Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil. Electronic address:
      [email protected]
FAU - Janson, Guilherme
AU  - Janson G
AD  - Department of Orthodontics, Bauru Dental School, University of Sao Paulo, Bauru, 
      Sao Paulo, Brazil.
FAU - Chiqueto, Kelly
AU  - Chiqueto K
AD  - Department of Orthodontics, Faculty of Dentistry, Federal University of Rio
      Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
FAU - Ferreira, Eduardo
AU  - Ferreira E
AD  - Department of Orthodontics, Faculty of Dentistry, Federal University of Rio
      Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
FAU - Rosing, Cassiano
AU  - Rosing C
AD  - Department of Periodontics, Faculty of Dentistry, Federal University of Rio
      Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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  - 0 (Dental Implants)
RN  - 7OV03QG267 (Nickel)
RN  - D1JT611TNE (Titanium)
SB  - D
SB  - IM
MH  - Brazil
MH  - Cephalometry
MH  - Child
MH  - Dental Implants
MH  - Dental Stress Analysis
MH  - Female
MH  - Humans
MH  - Malocclusion, Angle Class II/therapy
MH  - Mandible/diagnostic imaging
MH  - Molar/diagnostic imaging/*pathology
MH  - Nickel/chemistry
MH  - Orthodontic Anchorage Procedures/instrumentation/*methods
MH  - Orthodontic Appliance Design/instrumentation/*methods
MH  - Orthodontic Appliances
MH  - Orthodontic Brackets
MH  - Orthodontic Wires
MH  - Patient Care Planning
MH  - Radiography, Panoramic
MH  - Stress, Mechanical
MH  - Titanium/chemistry
MH  - Tooth Crown
MH  - Tooth Eruption
MH  - Tooth Movement Techniques/instrumentation/*methods
MH  - Tooth Root/anatomy & histology/pathology
MH  - Tooth, Impacted/complications/diagnostic imaging/*therapy
MH  - *Torque
MH  - Treatment Outcome
EDAT- 2018/04/01 06:00
MHDA- 2018/04/10 06:00
CRDT- 2018/04/01 06:00
PHST- 2017/03/01 00:00 [received]
PHST- 2017/12/01 00:00 [revised]
PHST- 2017/12/01 00:00 [accepted]
PHST- 2018/04/01 06:00 [entrez]
PHST- 2018/04/01 06:00 [pubmed]
PHST- 2018/04/10 06:00 [medline]
AID - S0889-5406(18)30002-7 [pii]
AID - 10.1016/j.ajodo.2017.12.006 [doi]
PST - ppublish
SO  - Am J Orthod Dentofacial Orthop. 2018 Apr;153(4):588-598. doi:
      10.1016/j.ajodo.2017.12.006.