Galvanic Corrosion and Ion Release from Different Orthodontic Brackets and Wires in Acidic Artificial Saliva
Journal of Dental School, Shahid Beheshti University of Medical Sciences,
Vol. 32 No. 1 (2014),
11 March 2019
,
Page 37-44
https://doi.org/10.22037/jds.v32i1.24762
Abstract
Objective: Corrosion resistance is among the most important properties of metal alloys used in the oral cavity. Consumption of acidic foods reduces the salivary pH and intensifies the corrosion of brackets and orthodontic wires. This study aimed to compare electro galvanic corrosion of different orthodontic brackets and wires and determine the amount of ions released into acidic artificial saliva. Methods: In this in vitro experimental study, 24 mandibular incisor brackets of 4 different manufacturers (Dentaurum, American Orthodontics, Shinye and ORJ) with stainless steel (SS) or nickel-titanium (Ni-Ti) round wires 0.016 were immersed in acidic artificial saliva for 28 days and their potential difference with the reference electrode was recorded. The amount of released ions was measured in the solution using atomic absorption method. Data were analyzed using two-way ANOVA and repeated measures ANOVA.
Results: The mean amount of ions released was not significantly different between groups (p>0.05). The potential difference of Shinye brackets coupled to SS wire was significantly lower than that of other combinations and was negative throughout the study. The potential difference of Dentaurum bracket-NiTi wire, ORJ bracket-NiTi wire, Shinye bracket-SS wire and ORJ bracket-SS wire combinations at the end of experiment was negative as well.
Conclusion: The galvanic corrosion of Shinye bracket coupled to SS wire in acidic artificial saliva was greater than that of other bracket-wire combinations. The specimens were not significantly different in terms of the released ions.
- Acidic artificial saliva
- Corrosion resistance
- Galvanic corrosion
- Metal ion release
- Orthodontic bracket
- Orthodontic wire
How to Cite
References
House K, Sernetz F, Dymock D, Sandy JR, Ireland AJ. Corrosion of orthodontic appliances-- should we care? Am J Orthod Dentofacial Orthop 2008; 133: 584-592.
Venugopalan R, Lucas LC. Evaluation of restorative and implant alloys galvanically coupled to titanium. Dent Mater 1998; 14: 165-172.
Chaturvedi TP, Upadhayay SN. An overview of orthodontic material degradation in oral cavity. Indian J Dent Res 2010; 21: 275-284.
Iijima M, Endo K, Yuasa T, Ohno H, Hayashi K, Kakizaki M, Mizoguchi I. Galvanic corrosion behavior of orthodontic arch wire alloys coupled to bracket alloys. Angle Orthod 2006; 76: 705- 711.
Schiff N, Dalard F, Lissac M, Morgon L, Grosgogeat B.
Corrosion resistance of three orthodontic brackets: a comparative study of three fluoride mouthwashes. Eur J Orthod 2005; 27: 541-549.
Kao CT, Huang TH. Variations in surface characteristics and corrosion behaviour of metal brackets and wires in different electrolyte solutions. Eur J Orthod 2010; 32: 555-560.
Danaei SM, Safavi A, Roeinpeikar SM, Oshagh M, Iranpour S, Omidkhoda M. Ion release from orthodontic brackets in 3 mouthwashes: an in vitro study. Am J Orthod Dentofacial Orthop 2011; 139: 730-734.
Kuhta M, Pavlin D, Slaj M, Varga S, Lapter-Varga M, Slaj M. Type of archwire and level of acidity: effect on the release of metal ions from orthodontic appliances. Angle Orthod 2009; 79: 102-110.
Tung KL, Chiu SM, Liaw YC, Lin YY, Lee SY, Huang HH. Corrosion resistance of Titanium- Containing Orthodontic Arch wires in Acidic Artificial Saliva. The IADR 84th General Session & Exhibition. Thursday, 29 Jun 2006. Brisbane, Australia. Available at: https://iadr.confex.com/iadr/2006Brisb/techprogram/ abstract_78176.htm
Li X, Wang J, Han EH, Ke W. Influence of fluoride and chloride on corrosion behavior of NiTi orthodontic wires. Acta Biomater 2007; 3: 807-815.
Mikulewicz M, Chojnacka K. Release of metal ions from orthodontic appliances by in vitro
studies: a systematic literature review. Biol Trace Elem Res 2011; 139: 241-256.
Huang HH. Surface characterizations and corrosion resistance of nickel-titanium orthodontic archwires in artificial saliva of various degrees of acidity. J Biomed Mater Res A 2005; 74: 629- 639.
Huang HH, Chiu YH, Lee TH, Wu SC, Yang HW, Su KH, et al. Ion release from NiTi orthodontic wires in artificial saliva with various acidities. Biomaterials 2003; 24: 3585-3592.
Bakhtari A, Bradley TG, Lobb WK, Berzins DW. Galvanic corrosion between various combinations of orthodontic brackets and archwires. Am J Orthod Dentofacial Orthop 2011; 140: 25-31.
Jahanbin A, Shahabi M, Mokhber N, Tavakkolian Ardakani E. Comparison of nickel ion release and corrosion sites among commonly used stainless steel brackets in Iran. J Mash Dent Sch 2009; 33: 17-24. [Persian]
de Souza RM, de Menezes LM. Nickel, chromium and iron levels in the saliva of patients with simulated fixed orthodontic appliances. Angle Orthod 2008; 78: 345-350.
Barrett RD, Bishara SE, Quinn JK. Biodegradation of orthodontic appliances. Part 1.Biodegradation of nickel and chromium in vitro. Am J Orthod Dentofacial Orthop 1993; 103: 8- 14.
Hwang CJ, Shin JS, Cha JK. Metal release from simulated fixed orthodontic appliances. Am J Orthod Dentofacial Orthop 2001; 120: 383-391.
Gűrsoy S, Acar AG, Seşen C. Comparison of metal release from new and recycled bracket- archwires combinations. Angle Orthod 2005; 75: 92-94.
Schiff N, Boinet M, Morgon L, Lissac M, Dalard F, Grosgogeat B. Galvanic corrosion between orthodontic wires and brackets in fluoride mouthwashes. Euro J Orthod 2006; 28: 298-304.
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