Korean J Orthod.  2013 Oct;43(5):242-247. 10.4041/kjod.2013.43.5.242.

Does the time interval after bleaching influence the adhesion of orthodontic brackets?

• Nascimento GCR
• de Miranda CA
• Machado SM
• Brandao GA
• de Almeida HA
• Silva CM

• KMID: 2273416
• DOI: http://doi.org/10.4041/kjod.2013.43.5.242

Abstract

OBJECTIVE
To test the null hypothesis that no difference exists between the effects of at-home bleaching and in-office bleaching on shear bond strength (SBS) with bracket bonding at 4 different time intervals after dental bleaching.
METHODS
Ninety extracted human premolars were randomly divided into 9 groups (n = 10) according to the bleaching methods used (at-home bleaching and in-office bleaching) and the storage time in artificial saliva (30 min, 1 day, 2 weeks, and 3 weeks before bonding). The control group was stored in artificial saliva for 7 days. Brackets were bonded with the Transbond XT adhesive system, and SBS testing was performed. The adhesive remnant index (ARI) was used to assess the amount of resin remaining on the enamel surfaces after debonding. The SBS data were analyzed by analysis of variance (ANOVA) and the Tukey test. For the ARI, the Kruskal-Wallis test was performed. Significance for all statistical tests was predetermined to be p < 0.05.
RESULTS
The SBS of the unbleached group was significantly higher (p < 0.05) than that of the bleached groups (except for the group bonded 30 min after at-home bleaching).
CONCLUSIONS
The null hypothesis was not totally rejected. All bleaching groups tested had decreased SBS of the brackets to the enamel, except for the group bonded 30 min after at-home bleaching. The SBS returned to values close to those of the unbleached enamel within 3 weeks following bleaching.

Keyword

Bracket; Bonding; Biomaterial science; Bleaching

MeSH Terms

Adhesives*
Bicuspid
Dental Bonding*
Dental Enamel
Humans
Orthodontic Brackets*
Resin Cements*
Saliva, Artificial
Dental Cements
Resin Cements
Saliva, Artificial

Reference

1. Reynolds IR. A review of direct orthodontic bonding. Br J Orthod. 1975; 2:171–178.

2. Eliades T, Brantley WA. The inappropriateness of conventional orthodontic bond strength assessment protocols. Eur J Orthod. 2000; 22:13–23.

3. Oesterle LJ, Shellhart WC. Effect of aging on the shear bond strength of orthodontic brackets. Am J Orthod Dentofacial Orthop. 2008; 133:716–720.

4. Ray S, Londhe S, Mitra R, Chopra SS. Are bleaching and desensitizing agents contraindication for patients seeking orthodontic treatment? Orthodontics(Chic.). 2012; 13:e181–e187.

5. Bishara SE, Ostby AW, Laffoon J, Warren JJ. A self-conditioner for resin-modified glass ionomers in bonding orthodontic brackets. Angle Orthod. 2007; 77:711–715.

6. Miles PG, Pontier JP, Bahiraei D, Close J. The effect of carbamide peroxide bleach on the tensile bond strength of ceramic brackets: an in vitro study. Am J Orthod Dentofacial Orthop. 1994; 106:371–375.

7. Cacciafesta V, Sfondrini MF, Stifanelli P, Scribante A, Klersy C. The effect of bleaching on shear bond strength of brackets bonded with a resin-modified glass ionomer. Am J Orthod Dentofacial Orthop. 2006; 130:83–87.

8. Uysal T, Basciftci FA, Uümez S, Sari Z, Buyukerkmen A. Can previously bleached teeth be bonded safely? Am J Orthod Dentofacial Orthop. 2003; 123:628–632.

9. Bishara SE, Oonsombat C, Soliman MM, Ajlouni R, Laffoon JF. The effect of tooth bleaching on the shear bond strength of orthodontic brackets. Am J Orthod Dentofacial Orthop. 2005; 128:755–760.

10. Titley KC, Torneck CD, Ruse ND. The effect of carbamide-peroxide gel on the shear bond strength of a microfil resin to bovine enamel. J Dent Res. 1992; 71:20–24.

11. Titley KC, Torneck CD, Ruse ND, Krmec D. Adhesion of a resin composite to bleached and unbleached human enamel. J Endod. 1993; 19:112–115.

12. Attin T, Hannig C, Wiegand A, Attin R. Effect of bleaching on restorative materials and restorations--a systematic review. Dent Mater. 2004; 20:852–861.

13. Bulut H, Kaya AD, Turkun M. Tensile bond strength of brackets after antioxidant treatment on bleached teeth. Eur J Orthod. 2005; 27:466–471.

14. Mullins JM, Kao EC, Martin CA, Gunel E, Ngan P. Tooth whitening effects on bracket bond strength in vivo. Angle Orthod. 2009; 79:777–783.

15. Borges AB, Rodrigues JR, Borges ALS, Marsilio AR. The influence of bleaching agents on enamel bond strength of a composite resin according to the storage time. Rev Odontol UNESP. 2007; 36:77–83.

16. Patusco VC, Montenegro G, Lenza MA, Alves de Carvalho A. Bond strength of metallic brackets after dental bleaching. Angle Orthod. 2009; 79:122–126.

17. Kimyai S, Valizadeh H. The effect of hydrogel and solution of sodium ascorbate on bond strength in bleached enamel. Oper Dent. 2006; 31:496–499.

18. Al-Salehi SK, Wood DJ, Hatton PV. The effect of 24h non-stop hydrogen peroxide concentration on bovine enamel and dentine mineral content and microhardness. J Dent. 2007; 35:845–850.

19. Attin T, Betke H, Schippan F, Wiegand A. Potential of fluoridated carbamide peroxide gels to support post-bleaching enamel re-hardening. J Dent. 2007; 35:755–759.

20. Borges AB, Yui KC, D'Avila TC, Takahashi CL, Torres CR, Borges AL. Influence of remineralizing gels on bleached enamel microhardness in different time intervals. Oper Dent. 2010; 35:180–186.

21. Oliveira R, Paes Leme AF, Giannini M. Effect of a carbamide peroxide bleaching gel containing calcium or fluoride on human enamel surface micro-hardness. Braz Dent J. 2005; 16:103–106.

22. Borges AB, Samezima LY, Fonseca LP, Yui KC, Borges AL, Torres CR. Influence of potentially remineralizing agents on bleached enamel microhardness. Oper Dent. 2009; 34:593–597.

23. Artun J, Bergland S. Clinical trials with crystal growth conditioning as an alternative to acid-etch enamel pretreatment. Am J Orthod. 1984; 85:333–340.

24. Phan X, Akyalcin S, Wiltshire WA, Rody WJ Jr. Effect of tooth bleaching on shear bond strength of a fluoride-releasing sealant. Angle Orthod. 2012; 82:546–551.

25. Ozoe R, Endo T, Abe R, Shinkai K, Katoh Y. Initial shear bond strength of orthodontic brackets bonded to bleached teeth with a self-etching adhesive system. Quintessence Int. 2012; 43:e60–e66.

26. Breschi L, Mazzoni A, Dorigo ES, Ferrari M. Adhesion to intraradicular dentin: a review. J Adhes Sci Tech. 2009; 23:1053–1083.

27. Prévost AP, Fuller JL, Peterson LC. The use of an intermediate resin in the acid-etch procedure: retentive strength, microleakage, and failure mode analysis. J Dent Res. 1982; 61:412–418.