Effects of reversing the coiling direction on the force-deflection characteristics of nickel-titanium closed-coil springs.
Force-deflection characteristics
Nickel-titanium closed-coil spring
Range of the force plateau
Reversing the coiling direction
Journal
Korean journal of orthodontics
ISSN: 2234-7518
Titre abrégé: Korean J Orthod
Pays: Korea (South)
ID NLM: 101582382
Informations de publication
Date de publication:
Jul 2019
Jul 2019
Historique:
received:
02
10
2018
revised:
12
02
2019
accepted:
19
03
2019
entrez:
2
8
2019
pubmed:
2
8
2019
medline:
2
8
2019
Statut:
ppublish
Résumé
To investigate the effects of reversing the coiling direction of nickeltitanium closed-coil springs (NiTi-CCSs) on the force-deflection characteristics. The samples consisted of two commercially available conventional NiTi-CCS groups and two reverse-wound NiTi-CCS groups (Ormco-Conventional vs. Ormco-Reverse; GAC-Conventional vs. GAC-Reverse; n = 20 per group). The reverse-wound NiTi-CCSs were directly made from the corresponding conventional NiTi-CCSs by reversing the coiling direction. Tensile tests were performed for each group in a temperature-controlled acrylic chamber (37 ± 1℃). After measuring the force level, the range of the deactivation force plateau (DFP) and the amount of mechanical hysteresis (MH), statistical analyses were performed. The Ormco-Reverse group exhibited a significant shift of the DFP end point toward the origin point (2.3 to 0.6 mm), an increase in the force level (1.2 to 1.3 N) and amount of MH (1.0 to 1.5 N) compared to the Ormco-Conventional group (all The two commercially available NiTi-CCS groups exhibited different patterns of change in the force-deflection characteristics when the coiling direction was reversed.
Identifiants
pubmed: 31367576
doi: 10.4041/kjod.2019.49.4.214
pmc: PMC6658899
doi:
Types de publication
Journal Article
Langues
eng
Pagination
214-221Déclaration de conflit d'intérêts
CONFLICTS OF INTEREST: No potential conflict of interest relevant to this article was reported.
Références
Am J Orthod Dentofacial Orthop. 1999 May;115(5):498-507
pubmed: 10229881
Am J Orthod Dentofacial Orthop. 2001 Jun;119(6):587-93
pubmed: 11395701
Angle Orthod. 2007 Nov;77(6):991-8
pubmed: 18004922
Am J Orthod Dentofacial Orthop. 2009 Feb;135(2):182-9
pubmed: 19201324
Angle Orthod. 2010 Jan;80(1):182-7
pubmed: 19852659
Am J Orthod Dentofacial Orthop. 2010 May;137(5):671-8
pubmed: 20451787
Am J Orthod Dentofacial Orthop. 2010 Oct;138(4):451-457
pubmed: 20889050
Am J Orthod Dentofacial Orthop. 2014 Sep;146(3):319-27
pubmed: 25172254
Int J Orthod Milwaukee. 2014 Fall;25(3):21-2
pubmed: 25745719
Dent Res J (Isfahan). 2015 May-Jun;12(3):231-4
pubmed: 26005462
Dental Press J Orthod. 2016 Jun;21(3):46-55
pubmed: 27409653
Dental Press J Orthod. 2017 Feb;22(1):38-46
pubmed: 28444020
Am J Orthod Dentofacial Orthop. 1988 Aug;94(2):89-96
pubmed: 3165245
Am J Orthod Dentofacial Orthop. 1986 Jul;90(1):1-10
pubmed: 3460342
Am J Orthod. 1985 Jun;87(6):445-52
pubmed: 3890554
Angle Orthod. 1993 Summer;63(2):145-8
pubmed: 8498703
Eur J Orthod. 1995 Oct;17(5):395-402
pubmed: 8529752
Am J Orthod Dentofacial Orthop. 1996 Jan;109(1):8-21
pubmed: 8540487