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Purpose: The purpose of this study was to evaluate the effects of the application of antioxidant on the shear bond strengths (SBS) of orthodontic brackets bonded to human enamel after extra-coronal bleaching with hydrogen peroxide (HP). Materials and methods: Fifty freshly extracted premolars were randomly divided into three groups. One group (Group 1) was bleached with 40% HP (n=20), another group (Group 2) was bleached with 40% HP and activated with an Nd: YAG laser (n=20), and a control group (Group 3) received no treatment (n=10). After the bleaching procedure, Groups 1 and 2 were further divided into two subgroups (Group 1a, Group 1b, Group 2a, and Group 2b). Specimens in Groups 1a and 2a (n=10) received no antioxidant application. A 10% sodium ascorbate solution was applied to specimens in Groups 1b and 2b (n=10). The brackets were then bonded with light-cure adhesive paste to the enamel surfaces of all experimental groups. Specimens were subjected to SBS tests for debonding. Results: The SBS of brackets bonded in Groups 1 and 2 were significantly lower than those of brackets bonded to the control group (p<0.001); however, no statistically significant differences in SBS were noted in Groups 1 and 2 (p>0.001). The antioxidant-treated SBS of brackets in Groups 1b and 2b were significantly higher than those of Groups 1a and 2a (p<0.001). Conclusions: The application of 40% HP had a negative effect on the bond strength. The use of antioxidant for 15 min resulted in the reversal of failed bond strength.
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Sulieman M. An overview of tooth discoloration: extrinsic, intrinsic and internalized stains. Dent Update 2005; 32: 463-464, 466-468, 471.
Hafez R., Ahmed D., Yousry M., El-Badrawy W., El-Mowafy O. Effect of In-Office Bleaching on Color and Surface Roughness of Composite Restoratives. Eur J Dent 2010; 4:118-127.
Heymann H. O. Additional conservative esthectic procedures. In: Roberson T. M., Haymann H. O., Swift E. J. Sturdevent’s Art and Science of Operative Dentistry, 5th edn. Noida, Reed Elsevier India Private Limited, 2009; pp 625‑641.
Wille T., Pesun I. J., Combe E. C., Lindquist G. C., Hodges J. S. A clinical pilot study of the time-dependent composition of tooth bleaching systems. J Oral Rehabil 2003; 30: 510-514.
Zhang C., Wang X., Kinoshita J., Zhao B., Toko T., Kimura Y., et al. Effects of KTP laser irradiation, diode laser, and LED on tooth bleaching: a comparative study. Photomed Laser Surg 2007; 25: 91-95.
Buchalla W., Attin T. External bleaching therapy with activation by heat, light or laser-a systematic review. Dent Mater 2007; 23: 586-596.
Luk K., Tam L., Hubert M. Effect of light energy on peroxide tooth bleaching. J Am Dent Assoc 2004; 135:194-201.
Sydney G. B., Barletta F. B., Sydney R. B. In vitro analysis of effects of heat used in dental bleaching on human dental enamel. Braz Dent J 2002; 13:166-169.
Sulieman M., Addy M., Rees J. S. Surface and intra-pulpal temperature rises during tooth bleaching: an in vitro study. Braz Dent J 2005; 199:37-40.
Pohjola R. M., Browning W. D., Hackman S. T., Myers M. L., Downey M. C. Sensitivity and tooth whitening agents. J Esthet Restor Dent 2002; 14:85-91.
Dabas D., Patil A. C., Uppin V. M. Evaluation of the effect of concentration and duration of application of sodium ascorbate hydrogel on the bond strength of composite resin to bleached enamel. J Conserv Dent 2011; 14: 356‑360.
Basting R. T., Rodrigues J. A., Serra M. C., Pimenta L. A. Shear bond strength of enamel treated with seven carbamide peroxide bleaching agents. J Esthet Restor Dent 2004; 16: 250‑259.
Oskoee P. A., Navimipour E. J., Oskoee S. S., Moosavi N. Effect of 10% sodium ascorbate on bleached bovine enamel surface morphology and microhardness. Open Dent J 2010; 4: 207‑210.
Titley K. C., Torneck C. D., Smith D. C., Chernecky R., Adibfar A. Scanning electron microscopy observations on the penetration and structure of resin tags in bleached and unbleached bovine enamel. J Endod 1991; 17: 72-75.
Kimyai S., Valizadeh H. Comparison of the effect of hydrogel and a solution of sodium ascorbate on dentin-composite bond strength after bleaching. J Contemp Dent Pract 2008; 9: 105-112.
Lai S. C., Mak Y. F., Cheung G. S., Mak Y. F., Carvalho R. M., Wei S. H., et al. Reversal of compromised bonding to oxidized etched dentin. J Dent Res 2001; 80: 1919-1924.
Yeung S. Y., Huang C. S., Chan C. P., Lin C. P., Lin H. N., Lee P. H. Antioxidant and pro-oxidant properties of chlorhexidine and its interaction with calcium hydroxide solutions. Int Endod J 2007; 40: 837-844.
Garcia E. J., Oldoni T. L., Alencar S. M., Reis A., Loguercio A. D., Grande R. H. Antioxidant activity by DPPH assay of potential solutions to be applied on bleached teeth. Braz Dent J 2012; 23: 22‑27.
Miles P. G., Pontier J. P., 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.
Cacciafesta V., Sfondrini M. F., 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.
Bulut H., Kaya A. D., Turkun M. Tensile bond strength of brackets after antioxidant treatment on bleached teeth. Eur J Orthod 2005; 27: 466-471.
Uysal T., Basciftci F. A., Usumez S., Sari Z., Buyukerkmen A. Can previously bleached teeth be bonded safely? Am J Orthod Dentofacial Orthop 2003; 123: 628-632.
Josey A. L., Meyers I. A., Romaniuk K., Symons AL. The effect of a vital bleaching technique on enamel surface morphology and the bonding of composite resin enamel. J Oral Rehabil 1996; 23: 244-250.
Bishara S. E., VonWald L., Olsen M. E., Laffoon J. F. Effect of time on the shear bond strength of glass ionomer and composite orthodontic adhesives. Am J Orthod Dentofacial Orthop 1999; 116: 616-620.
Bulut H., Turkun M., Demirbaş Kaya A. Effect of an antioxidizing agent on the shear bond strength of brackets bonded to bleached human enamel. Am J Orthod Dentofacial Orthop 2006; 129: 266-272.
Bishara SE, Sulieman A, Olson M. Effect of enamel bleaching on the bonding strength of orthodontic brackets. Am J Orthod Dentofacial Orthop 1993; 104: 444-447.
Stokes A. N., Hood J. A. A., Dhariwal D., Patel K. Effect of peroxide bleaches on resin-enamel bonds. Quintessence Int 1992; 23: 769-771.
Garcia-Godoy F., Dodge W. W., Donohue M., O'Quinn J. A. Composite resin bond strength after enamel bleaching. Oper Dent 1993; 18:144-147.
Reynolds J. R. A review of direct orthodontic bonding. J Orthod 1975; 2: 171-178.
Cavalli V., Reis A. F., Giannini M., Ambrosano G. M. The effect of elapsed time following bleaching on enamel bond strength of resin composite. Oper Dent 2001; 26: 597-602.
Turkun M., Kaya A. D. Effect of 10% sodium ascorbate on the shear bond strength of composite resin to bleached bovine enamel. J Oral Rehabil 2004; 31:1184-1191.
McGuckin R. S., Thurmond B. A., Osovitz S. Enamel shear bond strengths after vital bleaching. Am J Dent 1992; 5: 216-222.
E. Öztaş, G. Bağdelen, H. Kılıçoğlu, Ulukapi H., Aydin I. The effect of enamel bleaching on the shear bond strengths of metal and ceramic brackets. Eur J Orthod 2012; 34: 232-237.
Lai S. C. N., Tay F. R., Cheung G. S., Mak Y. F., Carvalho R. M., Wei S. H., et al. Reversal of compromised bonding in bleached enamel. J Dent Res 2002; 81: 477-481.
Zimmerli B., Jeger F., Lussi A. Bleaching of nonvital teeth. A clinically relevant literature review. Schweiz Monatsschr Zahnmed 2010; 120: 306-320.
Gokce B., Comlekoglu M. E., Ozpinar B., Türkün M., Kaya A. D. Effect of antioxidant treatment on bond strength of a luting resin to bleached enamel. J Dent Res 2008; 36: 780-785.
Hansen J. R., Frick K. J., Walker M. P. Effect of 35% sodium ascorbate treatment on microtensile bond strength after nonvital bleaching. J Endod 2014; 40:1668-1670.
Mirhashemi A., Elham Razavi E. S., Behboodi S., Chiniforush N. Effect of laser-assisted bleaching with Nd:YAG and diode lasers on shear bond strength of orthodontic brackets. Lasers Med Sci 2015; 30: 2245-2259.
Akın M., Ozyılmaz O. Y., Yavuz T., Aykent F., Basciftci F. A. Effect of Nd: YAG laser bleaching and antioxidizing agents on the shear bond strength of brackets. Photomed Laser Surg 2013; 31: 365-370.