Evaluation of the influence of patients' diet on the system of forces applied by nickel-titanium closed springs: an in vitro study
DOI:
https://doi.org/10.33448/rsd-v11i14.36028Keywords:
Orthodontics; Orthodontics corrective; Orthodontic appliance.Abstract
The objective of this work was to evaluate the influence of the patients' diet on the strength degradation of Nickel-titanium closed springs. Forty 9mm nickel titanium springs from the Morelli brand were used, divided into 2 groups of 20 according to the immersed solution. These springs were stretched to 100% of their original length and kept in devices immersed in recipients with the evaluated solutions (artificial saliva and distilled water with coke). The resulting forces were measured with a precision orthodontic dynamometer (grams) performed shortly after initial distension (T0) and after 28 days of distension (T1), then at the end of 20 and 30 months, T2 and T3 respectively. To compare times and groups, analysis of variance for repeated measures and Tukey's test were used. A significance value of 5% was adopted for the analyses. In the intragroup results, the springs showed a significant decrease in force between the evaluated periods. When comparing the values of forces between the groups (artificial saliva vs coke) in each period, it was observed that there was no significant difference, indicating that the type of solution did not influence the degradation of the forces of the springs. It was concluded that, regardless of the ingestion of liquids such as coke, NITI springs show significant strength degradation during the first 3 months. It is necessary to measure the forces of the springs during orthodontic treatment, aiming to establish an adequate force for movement and optimization of treatment time.
References
Angolkar PV, Arnold JV, Nanda RS, Duncanson MG. (1992). Force degradation of closed coil springs: an in vitro evaluation. Am J Orthod Dentofac Orthop.102:127‐133
Conti, ACCF et al (2020). Degradação de força de molas fechadas de níquel-titânio: um estudo in vitro. Research, Society and Development, set./2020; 9(10):1-15.
Cox C, Nguyen T, Koroluk L, et al. (2014). In-vivo force decay of nickel-titanium closed-coil springs. Am J Orthod Dentofacial Orthop.145:505–513
Dixon V, Read MJ, O’Brien KD, et al (2002). A randomized clinical trial to compare three methods of orthodontic space closure. J Orthod; 29: 31–36.
Geng H, Su H, Whitley J, Lin FC, Xu X, Ko CC. (2019).The effect of orthodontic clinical use on the mechanical characteristics of nickel-titanium closed-coil springs. J Int Med Res. 00: 1-12.
Magno AF, Monini Ada C, Capela MV, et al.(2015). Effect of clinical use of nickeltitanium springs. Am J Orthod Dentofacial Orthop. 148: 76–82.
Miura F, Mogi M, Ohura Y, et al. (1988). The super-elastic Japanese NiTi alloy wire for use in orthodontics. Part III. Studies on the Japanese NiTi alloy coil springs. Am J Orthod Dentofac Orthop. 94: 89–96.
Mohammed H, Rizk MZ, Wafaie K. Almuzian M. (2017). Effectiveness of nickel-titanium springs vs elastomeric chains in orthodontic space closure: A systematic review and meta-analysis. Orthod Craniofac Res. 1-8.
Nattrass C, Ireland AJ, Sherriff M. (1998). The effect of environmental factors on elastomeric chain and nickel titanium coil springs. Eur J Orthod. 20:169-76.
Nightingale C, Jones SP (2003). A clinical investigation of force delivery systems for orthodontic space closure. J Orthod. 30:229‐236.
Parvizi F, Rock WP (2003). The load/deflection characteristics of thermally activated orthodontic archwires. Eur J Orthod;25(4):417-21.
Prado T, et al (2020). Evaluation of the force degradation and deformation of the open-closed and open springs of NiTi: An in vitro study. Int Orthod, Dec;18 (4):801-808.
Proffit WR. (1999). Contemporary Orthodontics. St. Louis: Mosby-Year Book, p. 296-325.
Samuels RHA, Orth M, Rudge SJ, Mair LH. (1993). A comparison of the rate of space closure using a nickel-titanium spring and an elastic module: a clinical study. Am J Orthod Dentofac Orthop.103:464‐7.
Santos AC, Tortamano A, Naccarato SR, et al (2007). An in vitro comparison of the force decay generated by different commercially available elastomeric chains and NiTi closed coil springs. Braz Oral Res 2007; 21:51–57
Schneevoigt R, Haase A, Eckardt VL, Harzer W, Bourauel C. (1999) Laboratory analysis of superelastic NiTi compression springs. Med Eng Phys. Mar;21(2):119-25. doi: 10.1016/s1350-4533(99)00034-x. PMID: 10426512
Schwarz AM (1932). Tissue changes incident to orthodontic tooth movement. Int J Orthod,18:331-352.
Shaw JA, Kyriakides S. (1995). Thermomechanical aspects of NiTi. J Mech Phys Solids .43:1243–1281.
Van Leeuwen EJ, Kujipers-Jagtman AM, Von den Hoff JW, Wagener FADTG; Maltha JC (2010). Rate of orthodontic tooth movement after changing the force magnitude: an experimental study in beagle dogs. Orthod Craniofac Res, .13:238-245.
von Fraunhofer, J A et al. (1992).“The effects of artificial artificial saliva and topical fluoride treatments on the degradation of the elastic properties of orthodontic chains.” The Angle orthodontist vol. 62,4. 265-74.
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Copyright (c) 2022 Fabiane Louly; Gabriela Soares Loureiro; Joel Ferreira Santiago Junior; Renata Rodrigues de Almeida Pedrin; Thais Maria Freire Fernandes; Paula Vanessa Pedron Oltramari ; Ana Claudia de Castro Ferreira Conti
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