• Logo
  • SBMUJournals

An In Vitro Comparison of the Bond Strength of Composite to Superficial and Deep Dentin, Treated With Er:YAG Laser Irradiation or Acid-Etching

Homayoon Alaghehmand, Fatemeh Nezhad Nasrollah, Hanieh Nokhbatolfoghahaei, Reza Fekrazad




Introduction: The aim of this study was to compare the micro-shear bond strength of composite resin on superficial and deep dentin after conditioning with phosphoric acid and Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser.

Methods: Thirty human molars were selected, roots were removed and crowns were bisected to provide a total of 60 half-crowns. Specimens were ground to expose superficial and deep dentin. Samples were assigned to six groups: (1) AS (acid etching of superficial dentin); (2) AD (acid etching of deep dentin); (3) LS (Er:YAG laser irradiation on superficial dentin); (4) LD (Er:YAG laser irradiation on deep dentin); (5) LAS (Er:YAG laser irradiation on superficial dentin followed by acid etching); (6) LAD (Er:YAG laser irradiation on deep dentin followed by acid etching) The adhesive protocol was performed. Samples were thermocycled and micro-shear bond strength was tested to failure. The data were submitted to statistical analysis with one-way analysis of variance (ANOVA) and Tukey post hoc test.

Results: The AS group, demonstrated the greatest amount of micro-shear bond strength. Statistical analysis showed a decrease in bond strength in laser-treated groups which was more significant for deep dentin.

Conclusion: Preparation of dentin with laser did not improve bonding to superficial and deep dentin.


Acid-etch, Composite, Laser, Micro-Shear bond strength, Bond strength


Buonocore MG. A simple method of increasing the adhesion of acrylic filling materials to enamel surfaces. J Dent Res. 1955;34(6):849-853. doi:10.1177/002203455503 40060801.

Nakabayashi N. Adhesive bonding with 4-META. Oper Dent Suppl.1992;5:125-130.

Wang WN, Meng CL. A study of bond strength between light- and self-cured orthodontic resin. Am J Orthod Dentofacial Orthop. 1992;101(4):350-354. doi:10.1016/ s0889-5406(05)80328-2.

Pashley DH. Dentin: a dynamic substrate--a review. Scanning Microsc. 1989; 3(1):161-74.

Soderholm KJ. Correlation of in vivo and in vitro performance of adhesive restorative materials: a report of the ASC MD156 Task Group on Test Methods for the Adhesion of Restorative Materials. Dent Mater. 1991;7(2):74-83. doi:10.1016/0109-5641(91)90049-5.

Erickson RL. Surface interactions of dentin adhesive materials. Oper Dent. 1992;Suppl 5:81-94.

Marshall GW Jr, Marshall SJ, Kinney JH, Balooch M. The dentin substrate: structure and properties related to bonding. J Dent. 1997;25(6):441-58.

Marshall GW Jr. Dentin: microstructure and characterization. Quintessence Int. 1993;24(9):606-617.

Featherstone JD, Nelson DG. Laser effects on dental hard tissues. Adv Dent Res. 1987;1(1):21-26.

Nelson DG, Wefel JS, Jongebloed WL, Featherstone JD. Morphology, histology and crystallography of human dental enamel treated with pulsed low-energy infrared laser radiation. Caries Res. 1987; 21(5):411-426. doi:10.1002/ lsm.1900040404.

Liberman R, Segal TH, Nordenberg D, Serebro LI. Adhesion of composite materials to enamel: comparison between the use of acid and lasing as pretreatment. Lasers Surg Med. 1984;4(4):323-327. doi:10.1002/lsm.1900040404

Cooper LF, Myers ML, Nelson DG, Mowery AS. Shear strength of composite bonded to laser-pretreated dentin. J Prosthet Dent. 1988;60(1):45-49. doi:10.1016/0022- 3913(88)90348-4.

Walsh LJ, Abood D, Brockhurst PJ. Bonding of resin composite to carbon dioxide laser-modified human enamel. Dent Mater. 1994;10(3):162-166. doi:10.1016/0109- 5641(94)90026-4.

Visuri SR, Gilbert JL, Wright DD, Wigdor HA, Walsh JT, Jr. Shear strength of composite bonded to Er:YAG laser-prepared dentin. J Dent Res. 1996; 75(1):599-605.

de Souza AE, Corona SA, Dibb RG, Borsatto MC, Pecora JD. Influence of Er:YAG laser on tensile bond strength of a self-etching system and a flowable resin in different dentin depths. J Dent. 2004; 32(4):269-75.

Keller U, Hibst R. Effects of Er:YAG laser in caries treatment: a clinical pilot study. Lasers Surg Med. 1997;20(1):32-8.

Patel BC, Rickwood KR. Morphological changes induced by short pulse hydrogen fluoride laser radiation on dental hard tissue and restorative materials. Lasers Surg Med. 1997; 21(1):1-6.

Kameyama A, Kawada E, Takizawa M, Oda Y, Hirai Y. Influence of different acid conditioners on the tensile bond strength of 4-META/MMA-TBB resin to Er:YAG laser-irradiated bovine dentin. J Adhes Dent. 2000;2(4):297-304.

Martinez-Insua A, Da Silva Dominguez L, Rivera FG, Santana-Penin UA. Differences in bonding to acid-etched or Er:YAG-laser-treated enamel and dentin surfaces. J Prosthet Dent. 2000; 84(3):280-8. doi:10.1067/ mpr.2000.108600.

Burnett LH Jr, Conceicao EN, Pelinos JE, Eduardo CD. Comparative study of influence on tensile bond strength of a composite to dentin using Er:YAG laser, air abrasion, or air turbine for preparation of cavities. J Clin Laser Med Surg. 2001;19(4):199-202. doi:10.1089/104454701316918970.

Eguro T, Maeda T, Tanabe M, Otsuki M, Tanaka H. Adhesion of composite resins to enamel irradiated by the Er:YAG laser: application of the ultrasonic scaler on irradiated surface. Lasers Surg Med. 2001;28(4):365-370.

Kameyama A, Oda Y, Hirai Y, Kawada E, Takizawa M. Resin bonding to Er: YAG laser-irradiated dentin: combined effects of pre-treatments with citric acid and glutaraldehyde. Eur J Oral Sci. 2001;109(5):354-360. doi:10.1034/j.1600-0722.2001.00075.x.

Ceballo L, Toledano M, Osorio R, Tay FR, Marshall GW. Bonding to Er-YAG-laser-treated dentin. J Dent Res. 2002;81(2):119-122. doi:10.1177/154405910208100207.

Eguro T, Maeda T, Otsuki M, Nishimura Y, Katsuumi I, Tanaka H. Adhesion of Er:YAG laser-irradiated dentin and composite resins: application of various treatments on irradiated surface. Lasers Surg Med. 2002;30(4):267-72. doi:10.1002/lsm.10043.

Goncalves M, Corona SA, Borsatto MC, Silva PC, Pecora JD. Tensile bond strength of dentin-resinous system interfaces conditioned with Er:YAG laser irradiation. J Clin Laser Med Surg. 2002;20(2):89-93. doi:10.1089/104454702753768070.

Ramos RP, Chimello DT, Chinelatti MA, Nonaka T, Pecora JD, Palma Dibb RG. Effect of Er:YAG laser on bond strength to dentin of a self-etching primer and two single-bottle adhesive systems. Lasers Surg Med. 2002;31(3):164- 170. doi:10.1002/lsm.10106.

Otsuki M, Eguro T, Maeda T, Tanaka H. Comparison of the bond strength of composite resin to Er:YAG laser irradiated human enamel pre-treated with various methods in vitro. Lasers Surg Med. 2002; 30(5):351-359. doi:10.1002/ lsm.10049.

Goncalves M, Corona SA, Pecora JD, Dibb RG. Influence of the frequency of Er:YAG laser on the bond strength of dental enamel. J Clin Laser Med Surg. 2003; 21(2):105-108.

Trajtenberg CP, Pereira PN, Powers JM. Resin bond strength and micromorphology of human teeth prepared with an Erbium:YAG laser. Am J Dent. 2004; 17(5):331- 336.

Chimello-Sousa DT, de Souza AE, Chinelatti MA, Pecora JD, Palma-Dibb RG, Milori Corona SA. Influence of Er:YAG laser irradiation distance on the bond strength of a restorative system to enamel. J Dent. 2006;34(3):245-251.

Dunn WJ, Davis JT, Bush AC. Shear bond strength and SEM evaluation of composite bonded to Er:YAG laser-prepared dentin and enamel. Dent Mater. 2005;21(7):616- 224.

Oliveira DC, Manhaes LA, Marques MM, Matos AB. Microtensile bond strength analysis of different adhesive systems and dentin prepared with high-speed and Er:YAG laser: a comparative study. Photomed Laser Surg. 2005;23(2):219-24.

KellerU, Hibst R. Experimental studies of the Er:Yag laser on dental hard substances II. Light microscopic and SEM investigations. Laser in Surgery and Medicine. 1989;9:345- 351.

Visuri s, Gilbert J, Wrigdor H, Walsh JJ. Shear strength of composite bonded to Er:YAG laser –prepared dentin. J Dent Res. 1996;75:599-605.

Stiesch-Scholz M, Hanning M. In vitro study of enamel and dentin marginal integrity of composite and compomer restorations placed in primary teeth after diamond or Er:YAG laser cavity preparation . J Adhes Dent. 2000;2:213- 222.

Koliniotou-Koumpia E, Kouros P, Zafiriadis L, Koumpia E, Dionysopoulos P, Karagiannis V. Bonding of adhesives to Er:YAG laser-treated dentin. Eur J Dent. 2012;6(1):16-23.

Bachmann L, Diebolder R, Hibst R, Zezell DM. Changes in chemical composition and collagen structure of dentine tissue after erbium laser irradiation. Spectrochim Acta A Mol Biomol Spectrosc. 2005; 61(11-12):2634-2639. doi:10.1016/j.saa.2004.09.026.

De Munck J, Van Meerbeek B, Yudhira R, Lambrechts P, Vanherle G. Micro-tensile bond strength of two adhesives to Erbium:YAG-lased vs. bur-cut enamel and dentin. Eur J Oral Sci. 2002;110(4):322-329. doi:10.1034/j.1600- 0722.2002.21281.x.

Schein MT, Bocangel JS, Nogueira GE, Schein PA. SEM evaluation of the interaction pattern between dentin and resin after cavity preparation using ER:YAG laser. J Dent. 2003;31(2):127-135. doi:10.1016/s0300-5712(03)00003-4.

Bertrand MF, Hessleyer D, Muller-Bolla M, Nammour S, Rocca JP. Scanning electron microscopic evaluation of resin-dentin interface after Er:YAG laser preparation. Lasers Surg Med. 2004;35(1):51-57. doi:10.1002/lsm.20063.

Sassi JF, Chimello DT, Borsatto MC, Corona SA, Pecora JD, Palma-Dibb RG. Comparative study of the dentin/adhesive systems interface after treatment with Er:YAG laser and acid etching using scanning electron microscope. Lasers Surg Med. 2004;34(5):385-390. doi:10.1002/lsm.20064.

Fowler BO, Kuroda S. Changes in heated and in laser-irradiated human tooth enamel and their probable effects on solubility. Calcif Tissue Int. 1986; 38(4):197-208. doi:10.1007/bf02556711.

Oho T, Morioka T. A possible mechanism of acquired acid resistance of human dental enamel by laser irradiation. Caries Res. 1990; 24(2):86-92. doi:10.1159/000261245

DOI: https://doi.org/10.22037/jlms.v7i3.8473