• Logo
  • SBMUJournals

Effects of Erbium Family Laser on Shear Bond Strength of Composite to Dentin After Internal Bleaching

Nazanin Kiomarsi, Yasaman Arjmand, Mohammad Javad Kharrazi Fard, Nasim Chiniforush



Introduction: The aim of this study was to assess the effect of surface treatment with erbium: yttrium-aluminum-garnet (Er:YAG) and erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) lasers on shear bond strength of composite resin to recently bleached dentin.
Methods: In this study, 40 extracted human premolars were selected. The teeth were cut 4 mm apical to the cusp tip and were randomly divided into four groups (n = 10 in each group) for shear bond strength testing. For bleaching, 35% hydrogen peroxide (H2o2) gel (Opalescence Endo, Ultradent, South Jordan, UT, USA) was applied to dentin surfaces of all specimens for 10 days. Before etching and bonding, in Er,Cr:YSGG and Er:YAG laser groups, dentin surfaces were irradiated with Er,Cr:YSGG and Er:YAG lasers, respectively. In Er,Cr:YSGG group, Er:YAG group and control group, composite restoration was performed immediately after bleaching while in common procedure group, composite restoration was performed after seven days. The teeth were then subjected to shear bond strength testing machine. The data were statistically analyzed using analysis of variance (ANOVA) and Tukey test.
Results: The mean and standard deviation (SD) of shear bond strength was 4.3 ± 1.4 MPa for control group, 6.7 ± 2.0 Mpa for Er,Cr:YSGG group, 14.4 ± 3.7 Mpa for Er:YAG group and 19.4 ± 2.6 Mpa for common procedure group.
Conclusion: The shear strength of composite to Er:YAG laser-treated bleached dentin was significantly higher than control group while significantly lower than common procedure.


Er:YAG; Er,Cr:YSGG; Shear bond strength; Internal Bleaching; Composite.


Zimmerli B, Jeger F, Lussi A. Bleaching of nonvital teeth. A clinically relevant literature review. Schweiz Monatsschr Zahnmed. 2010;120(4):306-320.

Plotino G, Buono L, Grande NM, Pameijer CH, Somma F. Nonvital tooth bleaching: a review of the literature and clinical procedures. J Endod. 2008;34(4):394-407. doi:10.1016/j.joen.2007.12.020

Rocha Gomes Torres C, Caneppele TM, Del Moral de Lazari R, Ribeiro CF, Borges AB. Effect of dental surface treatment with Nd:YAG and Er:YAG lasers on bond strength of resin composite to recently bleached enamel. Lasers Med Sci. 2012;27(4):755-760. doi:10.1007/s10103-011-0946-6

Gontijo IT, Navarro RS, Ciamponi AL, Miyakawa W, Zezell DM. Color and surface temperature variation during bleaching in human devitalized primary teeth: an in vitro study. J Dent Child (Chic). 2008;75(3):229-234.

de Oliveira DP, Teixeira EC, Ferraz CC, Teixeira FB. Effect of intracoronal bleaching agents on dentin microhardness. J Endod. 2007;33(4):460-462. doi:10.1016/j.joen.2006.08.008

Abbott P, Heah SY. Internal bleaching of teeth: an analysis of 255 teeth. Aust Dent J. 2009;54(4):326-333. doi:10.1111/ j.1834-7819.2009.01158.x

Moosavi H, Moghaddas MJ, Ghoddusi J, Rajabi O. Effects of two antioxidants on the microleakage of resin-based composite restorations after nonvital bleaching. J Contemp Dent Pract. 2010;11(6):E033-040.

Whang HJ, Shin DH. Effects of applying antioxidants on bond strength of bleached bovine dentin. Restor Dent Endod. 2015;40(1):37-43. doi:10.5395/rde.2015.40.1.37

Braz R, Cordeiro-Loretto S, de Castro-Lyra AM, et al. Effect of bleaching on shear bond strength to dentin of etch-and-rinse and self-etching primer adhesives. Acta Odontol Latinoam. 2012;25(1):20-26.

Shinohara MS, Peris AR, Rodrigues JA, Pimenta LA, Ambrosano GM. The effect of nonvital bleaching on the shear bond strength of composite resin using three adhesive systems. J Adhes Dent. 2004;6(3):205-209.

Shinohara MS, Rodrigues JA, Pimenta LA. In vitro microleakage of composite restorations after nonvital bleaching. Quintessence Int. 2001;32(5):413-417.

Spyrides GM, Perdigao J, Pagani C, Araujo MA, Spyrides SM. Effect of whitening agents on dentin bonding. J Esthet Dent. 2000;12(5):264-270.

Bulut H, Kaya AD, Turkun M. Tensile bond strength of brackets after antioxidant treatment on bleached teeth. Eur J Orthod. 2005;27(5):466-471. doi:10.1093/ejo/cji044

Mukka PK, Komineni NK, Pola S, et al. An In-vitro Comparative Study of Shear Bond Strength of Composite Resin to Bleached Enamel using three Herbal Antioxidants. J Clin Diagn Res. 2016;10(10):Zc89-zc92. doi:10.7860/ jcdr/2016/19262.8676

Subramonian R, Mathai V, Christaine Angelo JB, Ravi J. Effect of three different antioxidants on the shear bond strength of composite resin to bleached enamel: An in vitro study. J Conserv Dent. 2015;18(2):144-148. doi:10.4103/0972-0707.153076

Kum KY, Lim KR, Lee CY, et al. Effects of removing residual peroxide and other oxygen radicals on the shear bond strength and failure modes at resin-tooth interface after tooth bleaching. Am J Dent. 2004;17(4):267-270.

Cavalli V, Reis AF, Giannini M, Ambrosano GM. The effect of elapsed time following bleaching on enamel bond strength of resin composite. Oper Dent. 2001;26(6):597- 602.

Shinohara MS, Peris AR, Pimenta LA, Ambrosano GM. Shear bond strength evaluation of composite resin on enamel and dentin after nonvital bleaching. J Esthet Restor Dent. 2005;17(1):22-29.

Turkun M, Turkun LS. Effect of nonvital bleaching with 10% carbamide peroxide on sealing ability of resin composite restorations. Int Endod J. 2004;37(1):52-60.

Aranha ACC, Eduardo CDP, Gutknecht N, Marques MM, Ramalho KM, Apel C. Analysis of the interfacial micromorphology of adhesive systems in cavities prepared with Er,Cr:YSGG, Er:YAG laser and bur. Microsc Res Tech. 2007;70(8):745-751. doi:10.1002/jemt.20459

Esteves-Oliveira M, Zezell DM, Apel C, et al. Bond strength of self-etching primer to bur cut, Er,Cr:YSGG, and Er:YAG lased dental surfaces. Photomed Laser Surg. 2007;25(5):373- 380. doi:10.1089/pho.2007.2044

Ferreira LS, Apel C, Francci C, Simoes A, Eduardo CP, Gutknecht N. Influence of etching time on bond strength in dentin irradiated with erbium lasers. Lasers Med Sci. 2010;25(6):849-854. doi:10.1007/s10103-009-0715-y

Harashima T, Kinoshita J, Kimura Y, et al. Morphological comparative study on ablation of dental hard tissues at cavity preparation by Er:YAG and Er,Cr:YSGG lasers. Photomed Laser Surg. 2005;23(1):52-55. doi:10.1089/ pho.2005.23.52

Shahabi S, Chiniforush N, Bahramian H, Monzavi A, Baghalian A, Kharazifard MJ. The effect of erbium family laser on tensile bond strength of composite to dentin in comparison with conventional method. Lasers Med Sci. 2013;28(1):139-142. doi:10.1007/s10103-012-1086-3

Ramos TM, Ramos-Oliveira TM, de Freitas PM, et al. Effects of Er:YAG and Er,Cr:YSGG laser irradiation on the adhesion to eroded dentin. Lasers Med Sci. 2015;30(1):17- 26. doi:10.1007/s10103-013-1321-6

Meister J, Franzen R, Forner K, et al. Influence of the water content in dental enamel and dentin on ablation with erbium YAG and erbium YSGG lasers. J Biomed Opt. 2006;11(3):34030. doi:10.1117/1.2204028

van As G. Erbium lasers in dentistry. Dent Clin North Am. 2004;48(4):1017-1059. doi:10.1016/j.cden.2004.06.001

Basaran EG, Ayna E, Basaran G, Beydemir K. Influence of different power outputs of erbium, chromium:yttrium-scandium-gallium-garnet laser and acid etching on shear bond strengths of a dual-cure resin cement to enamel. Lasers Med Sci. 2011;26(1):13-19. doi:10.1007/s10103-009- 0742-8

Ramos TM, Ramos-Oliveira TM, Moretto SG, de Freitas PM, Esteves-Oliveira M, de Paula Eduardo C. Microtensile bond strength analysis of adhesive systems to Er:YAG and Er,Cr:YSGG laser-treated dentin. Lasers Med Sci. 2014;29(2):565-573. doi:10.1007/s10103-012-1261-6

Leonetti Edos S, Rodrigues JA, Reis AF, Navarro RS, Aranha AC, Cassoni A. Effects of Er:YAG laser irradiation on the microtensile bond strength to bleached enamel. Photomed Laser Surg. 2011;29(8):551-558. doi:10.1089/ pho.2010.2813

Leonetti Edos S, Rodrigues JA, Reis AF, Navarro RS, Aranha AC, Cassoni A. Microtensile bond strength of resin composite to dentin treated with Er:YAG laser of bleached teeth. Lasers Med Sci. 2012;27(1):31-38. doi:10.1007/ s10103-010-0838-1

Lago AD, de Freitas PM, Netto NG. Evaluation of the bond strength between a composite resin and enamel submitted to bleaching treatment and etched with Er:YAG laser. Photomed Laser Surg. 2011;29(2):91-95. doi:10.1089/ pho.2009.2728

Delme KI, De Moor RJ. Scanning electron microscopic evaluation of enamel and dentin surfaces after Er:YAG laser preparation and laser conditioning. Photomed Laser Surg. 2007;25(5):393-401. doi:10.1089/pho.2006.2069

Folwaczny M, Mehl A, Aggstaller H, Hickel R. Antimicrobial effects of 2.94 μm Er:YAG laser radiation on root surfaces: an in vitro study. J Clin Periodontol. 2002;29(1):73-78. doi:10.1034/j.1600-051x.2002.290111.x

Schoop U, Kluger W, Moritz A, Nedjelik N, Georgopoulos A, Sperr W. Bactericidal effect of different laser systems in the deep layers of dentin. Lasers Surg Med. 2004;35(2):111- 116. doi:10.1002/lsm.20026

Shafiei F, Fekrazad R, Kiomarsi N, Shafiei E. Bond strength of two resin cements to dentin after disinfection pretreatment: effects of Er,Cr:YSGG laser compared with chemical antibacterial agent. Photomed Laser Surg. 2013;31(5):206-211. doi:10.1089/pho.2012.3400

Turkun M, Turkun LS, Celik EU, Ates M. Bactericidal effect of Er,Cr:YSGG laser on Streptococcus mutans. Dent Mater J. 2006;25(1):81-86.