Effect of the vertical position of the canine on the frictional/orthodontic force ratio of Ni-Ti archwires during the levelling phase of orthodontic treatment

Journal of Oral Science
Moeko KatoNoriyoshi Shimizu

Abstract

This study investigated the effect of the vertical position of the canine on changes in the frictional/orthodontic (F/O) force ratio of nickel-titanium (Ni-Ti) archwires during the initial levelling phase of orthodontic treatment. Frictional and orthodontic forces were measured by using low-friction brackets and Ni-Ti archwires with three different cross-sectional sizes and force types. To simulate canine malocclusion (first premolar extraction case), the upper right canine was displaced gingivally by 1 to 3 mm and the inter-bracket distance between the upper right lateral incisor and second premolar was set at 15 mm or 20 mm. A three-point bending test was performed to measure the orthodontic force of each Ni-Ti archwire. Frictional forces were measured with a universal testing machine and dental arch models by pulling parallel to the end of the archwire at a crosshead speed of 0.5 mm/min. F/O force ratio was calculated and analysed statistically. At a displacement of 3 mm, few archwires had F/O force ratios of less than 1.0, at which orthodontic force overcame frictional force, thus ensuring extrusion of the canine. For effective tooth movement, orthodontists should use Ni-Ti archwires with an F/O force ratio of less than 1.0.

References

Jul 1, 1986·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·F MiuraH Hamanaka
Jan 1, 1997·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·L J TaloumisL Lorton
May 9, 1998·Seminars in Orthodontics·R P Kusy, J Q Whitley
Oct 19, 2000·European Journal of Oral Sciences·C E ChristerssonT Arnebrant
Jul 27, 2001·European Journal of Orthodontics·B P Loftus, J Artum
Oct 19, 2001·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·G A Thorstenson, R P Kusy
Apr 16, 2003·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Laura R IwasakiJeffrey C Nickel
Nov 12, 2003·European Journal of Orthodontics·Stella ChaushuAdrian Becker
Jun 15, 2007·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Chin-Liang YehJames L Drummond
Feb 6, 2008·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Tae-Kyung KimSeung-Hak Baek
Oct 10, 2009·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Hisham M BadawiPaul W Major
Dec 3, 2011·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Dua'a H NaserSusan N Al-Khateeb
Mar 28, 2013·TheScientificWorldJournal·Vito CrincoliAntonio Boccaccio
Apr 9, 2013·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Mona A MontasserChristoph Bourauel
Jan 30, 2014·Journal of Applied Oral Science : Revista FOB·Masaki MurayamaNoriyoshi Shimizu
Mar 29, 2014·The Angle Orthodontist·Renata C LealCecilia P Turssi
Apr 4, 2015·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Mona A MontasserChristoph Bourauel

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