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Shaddud A.N.

Department of Pediatric Dentistry and Orthodontics of Medical Institute, People’s Friendship University of Russia., Moscow, Russia

Kosyreva T.F.

Department of pediatric dentistry ,«Peoples’ Friendship University of Russia, Ministry of Education and Science, 117198, Moscow, Russia

Comparative clinical and laboratory study of the force loss generated by NiTi closed coil springs

Authors:

Shaddud A.N., Kosyreva T.F.

More about the authors

Journal: Stomatology. 2018;97(4): 45‑48

DOI: 10.17116/stomat20189704145

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Table of contents

COMPARATIVE CLINICAL AND LABORATORY STUDY OF THE FORCE LOSS GENERATED BY NITI CLOSED COIL SPRINGS
COMPARATIVE CLINICAL AND LABORATORY STUDY OF THE FORCE LOSS GENERATED BY NITI CLOSED COIL SPRINGS

To cite this article:

Shaddud AN, Kosyreva TF. Comparative clinical and laboratory study of the force loss generated by NiTi closed coil springs. Stomatology. 2018;97(4):45‑48. (In Russ.)
https://doi.org/10.17116/stomat20189704145

Подписка 2026 Стоматология (Stomatology)
 
МСФ на ЯМ
Использование инфографики авторами научных работ
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Abstract:

The purpose in this study was to compare the force decay of laboratory and clinical NiTi closed coil springs. Specimens were 30 NiTi coil springs (clinical) and 15 (laboratory in artificial saliva 36.6 ºC) springs were tested by dynamometer to evaluate force loos at different intervals: 1, 2 and 3 months of use. Data (gF) were analyzed statistically using. Clinical and laboratory data were compared to evaluate effect of the oral environment on force loss. It was observed a significant force loss of NiTi springs. NiTi springs showed force loss (13.2%) at 28 days of clinical use, with a further significant loss from 4—12 weeks (~21%); force levels remained steady thereafter. Were not statistically different in clinical and laboratory force loss data. Space was closed at an average rate of 1 mm/month.

Keywords:

force loss
orthodontics
nickel titanium closed springs

Authors:

Shaddud A.N.

Department of Pediatric Dentistry and Orthodontics of Medical Institute, People’s Friendship University of Russia., Moscow, Russia

Kosyreva T.F.

Department of pediatric dentistry ,«Peoples’ Friendship University of Russia, Ministry of Education and Science, 117198, Moscow, Russia

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References:

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  2. Iijima M, Ohno H, Kawashima I, Endo K, Mizoguchi I. Mechanical behavior at different temperatures and stresses for superelastic nickel-titanium orthodontic wires having different transformation temperatures. Dental Materials. 2002;1:18(1):88-93. https://doi.org/10.1016/S0109-5641(01)00025-2
  3. Maganzini AL, Wong AM, Ahmed MK. Forces of various nickel-titanium closed coil springs. Angle Orthod. 2010;80(1):182-187. https://doi.org/10.2319/011509-592.1
  4. Manhartsberger C, Seidenbusch W. Force delivery of ni-ti coil springs. American Journal of Orthodontics and Dentofacial Orthopedics. 1996;1:109(1): 8-21. https://doi.org/10.1016/S0889-5406(96)70158-0
  5. Melsen B, Topp LF, Melsen HM, Terp S. Force system developed from closed coil springs. Eur J Orthod. 1994;16(6):531-539. https://doi.org/10.1093/ejo/16.6.531
  6. Stevenson JS, Kusy RP. Force application and decay characteristics of untreated and treated polyurethane elastomeric chains. Angle Orthod. 1994;64(6):455-467. https://doi.org/10.1016/S0889-5406(08)80175-8
  7. Tripolt H, Burstone CJ, Bantleon P, Manschiebel W. Force characteristics of nickel-titanium tension coil springs. Am J Orthod Dentofacial Orthop. 1999;115(5):498-507. https://doi.org/10.1016/S0889-5406(99)70271-4
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