Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.19716
Revista de Odontologia da UNESP
Original Article

Mechanical properties of orthodontic wires on ceramic brackets associated with low friction ligatures

Propriedades mecânicas de fios ortodônticos em bráquetes cerâmicos associados com ligaduras de baixa fricção

Fernando KOIKE; Hiroshi MARUO; Rogério LACERDA-SANTOS; Matheus Melo PITHON; Orlando Motohiro TANAKA

http://dx.doi.org/10.1590/1807-2577.19716 Rev. odontol. UNESP, vol.46, n3, p.125-130, 2017
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Abstract

Abstract: Introduction: Few studies investigated the mechanical properties of orthodontic wires on ceramic brackets associated the ligatures.

Objective: This study aimed to compare the load-deflection of orthodontic wires with round section of 0.016” made of stainless steel (SS), nickel-titanium (NiTi) and glass fiber-reinforced polymer composite (GFRPC).

Material and method: Sixty specimens obtained from 10 sectioned pre-contoured arches (TP Orthodontics), were divided into 3 groups of 20 according to each type of material (1 esthetic-type wire and 2 not esthetic) and length of 50 mm. The methodology consisted of a 3-point bending test using esthetic ceramic brackets (INVU, TP Orthodontics, Edgewise, 0.022”x 0.025”) as points of support. The tensile tests were performed on a mechanical test machine, at a speed of 10 mm/min, deflection of 1 mm, 2 mm and 3 mm. Friedman’s Non Parametric Multiple comparisons test was used (P<0.05).

Result: The nickel-titanium wire presented smaller load/ deflection compared with stainless steel. GFRPC wires had lower strength values among all groups evaluated (P<.05). The steel wire showed permanent deformation after 3 mm deflection, NiTi wire demonstrated memory effect and the esthetic type had fractures with loss of strength.

Conclusion: It can be concluded that steel wires have high strength values, requiring the incorporation of loops and folds to reduce the load / deflection. NiTi and GFRPC wires produced low levels of force, however the esthetic wire was shown to fracture and break.

Keywords

Orthodontic wires, elastomers, dental materials

Resumo

Resumo: Introdução: Poucos estudos investigaram as propriedades mecânicas dos fios ortodônticos em bráquetes cerâmicos associados às ligaduras.

Objetivo: O objetivo deste estudo foi comparar a carga-deflexão de fios ortodônticos com seção redonda de 0,016” de aço inoxidável (AI), níquel-titânio (NiTi) e composto de polímero reforçado com fibra de vidro (CPRFV).

Material e método: Sessenta espécimes obtidos a partir de 10 arcos pré-contornos seccionados (TP Orthodontics), foram divididos em 3 grupos de 20 de acordo com cada tipo de material (1 fio estético e 2 não estético) e comprimento de 50 mm. A metodologia consistiu de um teste de flexão de 3 pontos usando bráquetes estéticos cerâmicos (INVU, TP Orthodontics, Edgewise, 0,022 “x 0,025”) como pontos de suporte. Os ensaios de tração foram realizados em uma máquina de ensaios mecânicos, a uma velocidade de 10 mm / min, deflexão de 1 mm, 2 mm e 3 mm. Utilizou-se o teste não-paramétrico de comparações múltiplas de Friedman (P <0,05).

Resultado: O fio de níquel-titânio apresentou menor carga / deflexão em relação ao aço inoxidável. Os fios CPRFV tiveram valores de resistência mais baixos entre todos os grupos avaliados (P <0,05). O fio de aço mostrou deformação permanente após deflexão de 3 mm, fio NiTi demonstrou efeito de memória e o tipo estético teve fraturas com perda de força.

Conclusão: Pode-se concluir que os fios de aço têm valores de resistência elevados, exigindo a incorporação de alças e dobras para reduzir a carga / deflexão. Os fios NiTi e CPRFV produziram baixos níveis de força, porém o fio estético mostrou-se fraturado e quebrado.

Palavras-chave

Fios ortodônticos, elastômeros, materiais odontológicos

References

Faltermeier A, Behr M, Müβig D. Esthetic brackets: the influence of filler level on color stability. Am J Orthod Dentofacial Orthop. 2007 Jul;132(1):5.e13-6. PMid:17628243. http://dx.doi.org/10.1016/j.ajodo.2006.10.014.

Camporesi M, Baccetti T, Franchi L. Forces released by esthetic preadjusted appliances with low-friction and conventional elastomeric ligatures. Am J Orthod Dentofacial Orthop. 2007 Jun;131(6):772-5. PMid:17561057. http://dx.doi.org/10.1016/j.ajodo.2006.10.012.

Chalgren R, Combe EC, Wahl AJ. Effects of etchants and primers on shear bond strength of a self-ligating esthetic orthodontic bracket. Am J Orthod Dentofacial Orthop. 2007 Nov;132(5):577.e1-5. PMid:18005827. http://dx.doi.org/10.1016/j.ajodo.2007.03.019.

Harris TM, Faridrad MR, Dickson JA. The benefits of aesthetic orthodontic brackets in patients requiring multiple MRI scanning. J Orthod. 2006 Jun;33(2):90-4. PMid:16751430. http://dx.doi.org/10.1179/146531205225021465.

Cacciafesta V, Sfondrini MF, Lena A, Scribante A, Vallittu PK, Lassila LV. Force levels of fiber-reinforced composites and orthodontic stainless steel wires: a 3-point bending test. Am J Orthod Dentofacial Orthop. 2008 Mar;133(3):410-3. PMid:18331941. http://dx.doi.org/10.1016/j.ajodo.2006.01.047.

Freilich MA, Meiers JC, Duncan JP, Eckrote KA, Goldberg AJ. Clinical evaluation of fiber-reinforced fixed bridges. J Am Dent Assoc. 2002 Nov;133(11):1524-34, quiz 1540-1. PMid:12462697. http://dx.doi.org/10.14219/jada.archive.2002.0084.

Pithon MM, Figueiredo DSF, Oliveira DD, Santos RL. Evaluation of physical properties of esthetic brackets after clinical use: study in situ. J World Fed Orthod. 2013 Sep;2(3):e127-32. http://dx.doi.org/10.1016/j.ejwf.2013.07.002.

Santos AA, Pithon MM, Carlo FG, Carlo HL, Lima BA, Dos Passos TA, et al. Effect of time and pH on physical-chemical properties of orthodontic brackets and wires. Angle Orthod. 2015 Mar;85(2):298-304. PMid:25023707. http://dx.doi.org/10.2319/032914-234.1.

Parvizi F, Rock WP. The load/deflection characteristics of thermally activated orthodontic archwires. Eur J Orthod. 2003 Aug;25(4):417-21. PMid:12938849. http://dx.doi.org/10.1093/ejo/25.4.417.

Fischer-Brandies H, Es-Souni M, Kock N, Raetzke K, Bock O. Transformation behavior, chemical composition, surface topography and bending properties of five selected 0.016” x 0.022” NiTi archwires. J Orofac Orthop. 2003 Mar;64(2):88-99. PMid:12649705. http://dx.doi.org/10.1007/s00056-003-0062-8.

Fidalgo TK, Pithon MM, Maciel JV, Bolognese AM. Friction between different wire bracket combinations in artificial saliva: an in vitro evaluation. J Appl Oral Sci. 2011 Jan-Feb;19(1):57-62. PMid:21437471. http://dx.doi.org/10.1590/S1678-77572011000100012.

Hain M, Dhopatkar A, Rock P. The effect of ligation method on friction in sliding mechanics. Am J Orthod Dentofacial Orthop. 2003 Apr;123(4):416-22. PMid:12695769. http://dx.doi.org/10.1067/mod.2003.14.

Jarabak JR, Fizzell JA. Aparatologia del arco de canto com alambres delgados. Buenos Aires: Mundi; 1975.

Iijima M, Muguruma T, Brantley WA, Mizoguchi I. Comparisons of nanoindentation, 3-point bending, and tension tests for orthodontic wires. Am J Orthod Dentofacial Orthop. 2011 Jul;140(1):65-71. PMid:21724089. http://dx.doi.org/10.1016/j.ajodo.2009.11.015.

Juvvadi SR, Kailasam V, Padmanabhan S, Chitharanjan AB. Physical, mechanical, and flexural properties of 3 orthodontic wires: an in vitro study. Am J Orthod Dentofacial Orthop. 2010 Nov;138(5):623-30. PMid:21055604. http://dx.doi.org/10.1016/j.ajodo.2009.01.032.

Miura F, Mogi M, Okamoto Y. New application of superelastic NiTi rectangular wire. J Clin Orthod. 1990 Sep;24(9):544-8. PMid:2084172.

Nikolai RJ. Orthodontic wire: a continuing evolution. Semin Orthod. 1997 Sep;3(3):157-65. PMid:9573877. http://dx.doi.org/10.1016/S1073-8746(97)80066-7.

Lebedev AA, Kosarchuk VV. Influence of phase transformations on the mechanical properties of austenitic stainless steels. Int J Plast. 2000 Jun;16(7-8):749-67. http://dx.doi.org/10.1016/S0749-6419(99)00085-6.

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. Dent Mater. 2002 Jan;18(1):88-93. PMid:11740969. http://dx.doi.org/10.1016/S0109-5641(01)00025-2.

Pandis N, Bourauel CP. nickel-titanium (niti) arch wires: the clinical significance of super elasticity. Semin Orthod. 2010 Dec;16(4):249-57. http://dx.doi.org/10.1053/j.sodo.2010.06.003.

Gil FJ, Espinar E, Llamas JM, Manero JM, Ginebra MP. Variation of the superelastic properties and nickel release from original and reused NiTi orthodontic archwires. J Mech Behav Biomed Mater. 2012 Feb;6:113-9. PMid:22301180. http://dx.doi.org/10.1016/j.jmbbm.2011.11.005.

Berger J, Byloff FK, Waram T. Supercable and the SPEED system. J Clin Orthod. 1998 Apr;32(4):246-53. PMid:9709625.

Hemingway R, Williams RL, Hunt JA, Rudge SJ. The influence of bracket type on the force delivery of Ni-Ti archwires. Eur J Orthod. 2001 Jun;23(3):233-41. PMid:11471266. http://dx.doi.org/10.1093/ejo/23.3.233.

Abu Alhaija ES, Abu AlReesh IA, AlWahadni AM. Factors affecting the shear bond strength of metal and ceramic brackets bonded to different ceramic surfaces. Eur J Orthod. 2010 Jun;32(3):274-80. PMid:19903729. http://dx.doi.org/10.1093/ejo/cjp098.

Ahmad Akhoundi M, Rahmati Kamel M, Hooshmand T, Harririan I, Kharazi Fard M, Noroozi H. Assessment of bond strength between metal brackets and non-glazed ceramic in different surface treatment methods. J Dent (Tehran). 2010;7(2):64-70. PMid:21998777.

Inami T, Tanimoto Y, Yamaguchi M, Shibata Y, Nishiyama N, Kasai K. Surface topography, hardness, and frictional properties of GFRP for esthetic orthodontic wires. J Biomed Mater Res B Appl Biomater. 2016 Jan;104(1):88-95. PMid:25631358. http://dx.doi.org/10.1002/jbm.b.33372.

Phukaoluan A, Khantachawana A, Kaewtatip P, Dechkunakorn S, Kajornchaiyakul J. Improvement of mechanical and biological properties of TiNi alloys by addition of Cu and Co to orthodontic archwires. Int Orthod. 2016 Sep;14(3):295-310. PMid:27520713.

Dechkunakorn S, Anuwongnukroh N, Tua-Ngam P. Comparison of the mechanical properties of three commercial orthodontic niti round archwires. Key Eng Mater. 2016 April;689(6):73-7. http://dx.doi.org/10.4028/www.scientific.net/KEM.689.73.

Zhang H, Guo S, Wang D, Zhou T, Wang L, Ma J. Effects of nanostructured, diamondlike, carbon coating and nitrocarburizing on the frictional properties and biocompatibility of orthodontic stainless steel wires. Angle Orthod. 2016 Sep;86(5):782-8. PMid:26927019. http://dx.doi.org/10.2319/090715-602.1.
 

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