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VOLUME 13 , ISSUE 3 ( May-June, 2012 ) > List of Articles

RESEARCH ARTICLE

Comparison of Metal Ion Release from Different Bracket Archwire Combinations: An in vitro Study

CM Manjith, Srinivas Kumar Karnam, A Naveen Reddy

Citation Information : Manjith C, Karnam SK, Reddy AN. Comparison of Metal Ion Release from Different Bracket Archwire Combinations: An in vitro Study. J Contemp Dent Pract 2012; 13 (3):376-381.

DOI: 10.5005/jp-journals-10024-1154

License: CC BY-NC 3.0

Published Online: 01-06-2012

Copyright Statement:  Copyright © 2012; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The metal ion released from the orthodontic appliance may cause allergic reactions particularly nickel and chromium ions. Hence, this study was undertaken to determine the amount of nickel, chromium, copper, cobalt and iron ions released from simulated orthodontic appliance made of new archwires and brackets.

Materials and methods

Sixty sets of new archwire, band material, brackets and ligature wires were prepared simulating fixed orthodontic appliance. These sets were divided into four groups of fifteen samples each. Group 1: Stainless steel rectangular archwires. Group 2: Rectangular NiTi archwires. Group 3: Rectangular copper NiTi archwires. Group 4: Rectangular elgiloy archwires. These appliances were immersed in 50 ml of artificial saliva solution and stored in polypropylene bottles in the incubator to simulate oral conditions. After 90 days the solution were tested for nickel, chromium, copper, cobalt and iron ions using atomic absorption spectrophotometer.

Results

Results showed that high levels of nickel ions were released from all four groups, compared to all other ions, followed by release of iron ion levels. There is no significant difference in the levels of all metal ions released in the different groups.

Conclusion

The study confirms that the use of newer brackets and newer archwires confirms the negligible release of metal ions from the orthodontic appliance.

Clinical significance

The measurable amount of metals, released from orthodontic appliances in artificial saliva, was significantly below the average dietary intake and did not reach toxic concentrations.

How to cite this article

Karnam SK, Reddy AN, Manjith CM. Comparison of Metal Ion Release from Different Bracket Archwire Combinations: An in vitro Study. J Contemp Dent Pract 2012;13(3):376-381.


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  1. Ion transport and water movement. Arch Oral Biol 1987;32:843-47.
  2. Corrosion of orthodontic bracket bases. Am J Orthod Dentofacial Orthop 1982;81:43-48.
  3. Biodegradation of orthodontic bracket system. Am J Orthod Dentofacial Orthop 1986;90:195-98.
  4. Biomaterials in orthodontics. Orthodontics current and principles and techniques. Graber, Vanarsdall, Vig (4th ed), 345-84.
  5. Orthodontic biomaterials: From the past to the present. Angle Orthod 2002;72(6):501-12.
  6. New orthodontic alloy Am J Orthod Dentofacial Orthop 1980;77;121-32.
  7. Comparision of metal release from new and recycled bracket–archwire combinations. Angle Orthod 2005;75(1):92-948.
  8. In vitro release of nickel and chromium from simulated orthodontic appliances. Am J Orthod Dentofacial Orthop 1983;(84):156-59.
  9. In vitro surface corrosion of stainless steel and NiTi orthodontic appliances: Aust Orthod J 2003;19:13-18.
  10. Nickel content of as received, retrieved and recycled stainless steel brackets. Am J Orthod Dentofacial Orthop 2002;(122):217-20.
  11. Francasso: In vivo study on metal release from fixed orthodontic appliances and DNA damage in oral mucosa cells. Am J Orthod Dentofacial Orthop 2003(124);687-94.
  12. California proposition may help patients in search of better oral health (editorial). Am J Orthod Dentofacial Orthop 2001(120)1.
  13. Am J Orthod Dentofacial Orthop 2001;120:68-75.
  14. Metal ion release from ne and recycled stainless steel brackets. European Journal of Orthodontics 2004;26:171-77.
  15. Type of archwire and level of acidity; effects on the release of metal ions from orthodontic appliances. Angle Orthod 2009;79:102-10.
  16. Biodegradation of orthodontic appliances. Part l. Biodegradation of nickel and chromium in vitro. Am J Orthod Dentofacial Orthop 1993;103(1):8-14.
  17. Composition and in vitro corrosion of orthodontic appliances. Am J Orthod Dentofacial Orthop 1992;101:525-32.
  18. In vitro release of nickel and chromium from different types of simulated orthodontic appliances 1995;65(2):111-16.
  19. Metal release from brackets and archwires. Korean Journal of Orthodontics 1989;19;75-84.
  20. A study on metal release of TiN ion plated stainless steel orthodontic appliances. Korean Journal of Orthodontics 1995;25;43-54.
  21. A study on the release of nickel and chromium from simulated orthodontic appliances. Iksan, Chollabuk-do; Korea; Wonkwang University 1998.
  22. Effects of sterilization on the mechanical properties and surface topography of NiTi alloy wires. Am J Orthod Dentofacial Orthop 2001;120:654-63.
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