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Predictable method to deliver physiologic force for extrusion of palatally impacted maxillary canines.

Abstract Orthodontic treatment of palatally impacted maxillary canines raises many difficulties; to minimize complications, careful planning of orthodontic extrusion and the use of physiologic force are crucial. The aim of this study was to quantitatively evaluate a simple and reproducible system for orthodontic extrusion of impacted canines that can provide the correct amount of force.
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Authors

Mayor MeshTerms
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- 29407496
OWN - NLM
STAT- MEDLINE
DCOM- 20180213
LR  - 20180213
IS  - 1097-6752 (Electronic)
IS  - 0889-5406 (Linking)
VI  - 153
IP  - 2
DP  - 2018 Feb
TI  - Predictable method to deliver physiologic force for extrusion of palatally
      impacted maxillary canines.
PG  - 195-203
LID - S0889-5406(17)30790-4 [pii]
LID - 10.1016/j.ajodo.2017.05.035 [doi]
AB  - INTRODUCTION: Orthodontic treatment of palatally impacted maxillary canines
      raises many difficulties; to minimize complications, careful planning of
      orthodontic extrusion and the use of physiologic force are crucial. The aim of
      this study was to quantitatively evaluate a simple and reproducible system for
      orthodontic extrusion of impacted canines that can provide the correct amount of 
      force. METHODS: Ten specimens were constructed, consisting of a cantilever made
      with a 0.6-mm or 0.7-mm stainless steel wire modeled around a transpalatal bar
      with 3, 5, or 7 loops in the shape of a helical torsion spring. A mechanical
      testing machine was used to measure the force produced by the cantilever at 3, 6,
      9, 12, and 15 mm of activation. RESULTS: The force values ranged from 1.24 +/-
      0.13 N for the 0.7-mm wire with 3 loops to 0.48 +/- 0.04 N for the 0.6-mm wire
      with 7 loops. The forces measured for the 0.6-mm wire with 3 loops and the 0.7-mm
      wire with 7 loops were similar at 15 mm of deflection. CONCLUSIONS: The proposed 
      system has a simple and robust design, is easy to construct and manage, and can
      provide the desired amount of force by changing the wire diameter and number of
      loops.
CI  - Copyright (c) 2017 American Association of Orthodontists. Published by Elsevier
      Inc. All rights reserved.
FAU - Tepedino, Michele
AU  - Tepedino M
AD  - Department of Biotechnological and Applied Clinical Sciences, University of
      L'Aquila, L'Aquila, Italy. Electronic address: [email protected]
FAU - Chimenti, Claudio
AU  - Chimenti C
AD  - Department of Biotechnological and Applied Clinical Sciences, University of
      L'Aquila, L'Aquila, Italy.
FAU - Masedu, Francesco
AU  - Masedu F
AD  - Department of Biotechnological and Applied Clinical Sciences, University of
      L'Aquila, L'Aquila, Italy.
FAU - Iancu Potrubacz, Maciej
AU  - Iancu Potrubacz M
AD  - Private practice, L'Aquila, Italy.
LA  - eng
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
SB  - D
SB  - IM
MH  - Cuspid/*surgery
MH  - Dental Stress Analysis
MH  - Humans
MH  - Maxilla
MH  - Orthodontic Extrusion/instrumentation/*methods
MH  - Orthodontic Wires
MH  - Tooth, Impacted/*surgery
EDAT- 2018/02/07 06:00
MHDA- 2018/02/14 06:00
CRDT- 2018/02/07 06:00
PHST- 2017/02/01 00:00 [received]
PHST- 2017/05/01 00:00 [revised]
PHST- 2017/05/01 00:00 [accepted]
PHST- 2018/02/07 06:00 [entrez]
PHST- 2018/02/07 06:00 [pubmed]
PHST- 2018/02/14 06:00 [medline]
AID - S0889-5406(17)30790-4 [pii]
AID - 10.1016/j.ajodo.2017.05.035 [doi]
PST - ppublish
SO  - Am J Orthod Dentofacial Orthop. 2018 Feb;153(2):195-203. doi:
      10.1016/j.ajodo.2017.05.035.