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Abstract: Objective: This study deals with the effect of phosphoric acid etching and conditioning on enamel micro-tensile bond strengths (μTBSs) of conventional and resin-modified glass ionomer cements (GICs/RMGICs). Methods: Forty-eight bovine incisors were prepared into rectangular blocks. Highly-polished labial enamel surfaces were either acid-etched, conditioned with liquids of cements, or not further treated (control). Subsequently, two matching pre-treated enamel surfaces were cemented together with one of four cements [two GICs: Fuji I (GC), Ketac Cem Easymix (3M ESPE); two RMGICs: Fuji Plus (GC), RelyX Luting (3M ESPE)] in preparation for μTBS tests. Pre-treated enamel surfaces and cement-enamel interfaces were analyzed by scanning electron microscopy (SEM). Results: Phosphoric acid etching significantly increased the enamel μTBS of GICs/RMGICs. Conditioning with the liquids of the cements produced significantly weaker or equivalent enamel μTBS compared to the control. Regardless of etching, RMGICs yielded stronger enamel μTBS than GICs. A visible hybrid layer was found at certain enamel-cement interfaces of the etched enamels. Conclusions: Phosphoric acid etching significantly increased the enamel μTBSs of GICs/RMGICs. Phosphoric acid etching should be recommended to etch the enamel margins before the cementation of the prostheses such as inlays and onlays, using GICs/RMGICs to improve the bond strengths. RMGICs provided stronger enamel bond strength than GICs and conditioning did not increase enamel bond strength.

[1]Altintas, S., Eldeniz, A.U., Usumez, A., 2008. Shear bond strength of four resin cements used to lute ceramic core material to human dentin. J. Prosthodont., 17(8):634-640.

[2]Antonucci, J.M., McKinney, J.E., Stansbury, J.W., 1988. Resin-Modified Glass Ionomer Cement. US Patent Application, 7-160 856.

[3]Attin, T., Buchalla, W., Hellwig, E., 1996. Influence of enamel conditioning on bond strength of resin-modified glass ionomer restorative materials and polyacid-modified composites. J. Prosthet. Dent., 76(1):29-33.

[4]Bishara, S.E., VonWald, L., Laffoon, J.F., Jakobsen, J.R., 2000a. Effect of altering the type of enamel conditioner on the shear bond strength of a resin-reinforced glass ionomer adhesive. Am. J. Orthod. Dentofacial Orthop., 118(3):288-294.

[5]Bishara, S.E., VonWald, L., Laffoon, J.F., Jakobsen, J.R., 2000b. Effect of changing enamel conditioner concentration on the shear bond strength of a resin-modified glass ionomer adhesive. Am. J. Orthod. Dentofacial Orthop., 118(3):311-316.

[6]Brauchli, L., Muscillo, T., Steineck, M., Wichelhaus, A., 2010. Influence of enamel conditioning on the shear bond strength of different adhesives. J. Orofac. Orthop., 71(6):411-420.

[7]Buonocore, M.G., 1955. A simple method of increasing the adhesion of acrylic filling materials to enamel surfaces. J. Dent. Res., 34(6):849-853.

[8]Cacciafesta, V., Bosch, C., Melsen, B., 1998. Clinical comparison between a resin-reinforced self-cured glass ionomer cement and a composite resin for direct bonding of orthodontic brackets. Part 1: wetting with water. Clin. Orthod. Res., 1(1):29-36.

[9]Cacciafesta, V., Bosch, C., Melsen, B., 1999. Clinical comparison between a resin-reinforced self-cured glass ionomer cement and a composite resin for direct bonding of orthodontic brackets. Part 2: bonding on dry enamel and on enamel soaked with saliva. Clin. Orthod. Res., 2(4):186-193.

[10]Cacciafesta, V., Sfondrini, M.F., Baluga, L., Scribante, A., Klersy, C., 2003. Use of a self-etching primer in combination with a resin-modified glass ionomer: effect of water and saliva contamination on shear bond strength. Am. J. Orthod. Dentofacial Orthop., 124(4):420-426.

[11]Chitnis, D., Dunn, W.J., Gonzalesc, D.A., 2006. Comparison of in-vitro bond strengths between resin-modified glass ionomer, polyacid-modified composite resin, and giomer adhesive systems. Am. J. Orthod. Dentofacial Orthop., 129(3):330.e11-e16.

[12]Cortes, O., Garcia-Godoy, F., Boj, J.R., 1993. Bond strength of resin-reinforced glass ionomer cements after enamel etching. Am. J. Dent., 6(6):299-301.

[13]Coutinho, E., van Landuyt, K., de Munck, J., Poitevin, A., Yoshida, Y., Inoue, S., Peumans, M., Suzuki, K., Lambrechts, P., van Meerbeek, B., 2006. Development of a self-etch adhesive for resin-modified glass-ionomers. J. Dent. Res., 85(4):349-353.

[14]de Munck, J., van Landuyt, K., Peumans, M., Poitevin, A., Lambrenchts, P., Braem, M., van Meerbeek, B., 2005. A critical review of the durability of adhesion to tooth tissue: methods and results. J. Dent. Res., 84(2):118-132.

[15]Erickson, R.L., Barkmeier, W.W., Kimmes, N.S., 2009. Bond strength of self-etch adhesives to pre-etched enamel. Dent. Mater., 25(10):1187-1194.

[16]Espinosa, R., Valencia, R., Uribe, M., Ceja, I., Cruz, J., Saadia, M., 2010. Resin replica in enamel deproteinization and its effect on acid etching. J. Clin. Pediatr. Dent., 35(1):47-51.

[17]Fajen, V.B., Duncanson, M.G.Jr., Nanda, R.S., Currier, G.F., Angolkar, P.V., 1990. An in vitro evaluation of bond strength of three glass ionomer cements. Am. J. Orthod. Dentofacial Orthop., 97(4):316-322.

[18]Feagin, F., Koulourides, T., Pigman, W., 1969. The characterization of enamel surface demineralization, remineralization, and associated hardness changes in human and bovine material. Arch. Oral Biol., 14(12):1407-1417.

[19]Fu, B., Shen, Q., Qian, W., Sun, X., Hannig, M., 2005. Interfacial interaction of tartaric acid with hydroxyapatite and enamel. J. Mater. Sci. Mater. Med., 16(9):827-831.

[20]Fukuda, R., Yoshida, Y., Nakayama, Y., Okazaki, M., Inoue, S., Sano, H., Suzuki, K., Shintani, H., van Meerbeek, B., 2003. Bonding efficacy of polyalkenoic acids to hydroxyapatite, enamel and dentin. Biomaterials, 24(11):1861-1867.

[21]Gardner, A., Hobson, R., 2001. Variations in acid-etch patterns with different acids and etch times. Am. J. Orthod. Dentofacial Orthop., 120(1):64-67.

[22]Glasspoole, E.A., Erickson, R.L., Davidson, C.L., 2002. Effect of surface treatments on the bond strength of glass ionomers to enamel. Dent. Mater., 18(6):454-462.

[23]Hannig, M., Bock, H., Bott, B., Hoth-Hannig, W., 2002. Inter-crystallite nanoretention of self-etching adhesives at enamel imaged by transmission electron microscopy. Eur. J. Oral Sci., 110(6):464-470.

[24]Itoh, T., Fukushima, T., Inoue, Y., Arita, S., Miyazaki, K., 1999. Effect of water, saliva and blood contamination on bonding of metal brackets with a 4-META/MMA/TBB resin to etched enamel. Am. J. Dent., 12(6):299-304.

[25]Jiang, Q., Pan, H., Liang, B., Fu, B., Hannig, M., 2010. Effect of saliva contamination and decontamination on bovine enamel bond strength of four self-etching adhesives. Oper. Dent., 35(2):194-202.

[26]Kanca, J., 1993. Etchant composition and bond strength to dentin. Am. J. Dent., 6(6):287-290.

[27]Kent, B.E., Lewis, B.G., Wilson, A.D., 1979. Glass ionomer cement formulations: I. The preparation of novel fluoroaluminosilicate glasses high in fluorine. J. Dent. Res., 58(6):1607-1619.

[28]Khouw-Liu, V.H.W., Anstice, H.M., Pearson, G.J., 1999. An in vitro investigation of a poly(vinyl phosphonic acid) based cement with four conventional glass-ionomer cements. Part 1: flexural strength and fluoride release. J. Dent., 27(5):351-357.

[29]Koshiro, K., Sidhu, S.K., Inoue, S., Ikeda, T., Sano, H., 2006. New concept of resin-dentin interfacial adhesion: the nanointeraction zone. J. Biomed. Mater. Res. B Appl. Biomater., 77B(2):401-408.

[30]Legler, L.R., Retief, D.H., Bradley, E.L., 1990. Effects of phosphoric acid concentration and etch duration on enamel depth of etch: an in vitro study. Am. J. Orthod. Dentofacial Orthop., 98(2):154-160.

[31]Moshaverinia, A., Roohpour, N., Chee, W.W.L., Schricker, S.R., 2012. A review of polyelectrolyte modifications in conventional glass-ionomer dental cements. J. Mater. Chem., 22(7):2824-2833.

[32]Movahhed, H.Z., Ogaard, B., Syverud, M., 2005. An in vitro comparison of the shear bond strength of a resin-reinforced glass ionomer cement and a composite adhesive for bonding orthodontic brackets. Eur. J. Orthod., 27(5):477-483.

[33]Nakamichi, I., Iwaku, M., Fusayama, T., 1983. Bovine teeth as possible substitutes in the adhesion test. J. Dent. Res., 62(10):1076-1081.

[34]Nicholson, J.W., Czarnecka, B., 2008. The biocompatibility of resin-modified glass-ionomer cements for dentistry. Dent. Mater., 24(12):1702-1708.

[35]Pashley, D.H., Tay, F.R., Breschi, L., Tjäderhane, L., Carvalho, R.M., Carrilho, M., Tezvergil-Mutluay, A., 2011. State of the art etch-and-rinse adhesives. Dent. Mater., 27(1):1-16.

[36]Powis, D.R., Follerås, T., Merson, S.A., Wilson, A.D., 1982. Improved adhesion of a glass ionomer cement to dentin and enamel. J. Dent. Res., 61(12):1416-1422.

[37]Putt, M.S., Kleber, C.J., Muhler, J.C., 1980. A comparison of the polishing properties of human and bovine enamel. J. Dent. Res., 59(7):1177.

[38]Sidhu, S.K., 2011. Glass-ionomer cement restorative materials: a sticky subject? Aust. Dent. J., 56(s1):23-30.

[39]Silverman, E., Cohen, M., Demke, R.S., Silverman, M., 1995. A new light-cured glass ionomer cement that bonds brackets to teeth without etching in the presence of saliva. Am. J. Orthod. Dentofacial Orthop., 108(3):231-236.

[40]Tanumiharja, M., Burrow, M.F., Tyas, M.J., 2000. Microtensile bond strengths of glass ionomer (polyalkenoate) cements to dentine using four conditioners. J. Dent., 28(5):361-366.

[41]Torii, Y., Itou, K., Hikasa, R., Iwata, S., Nishitani, Y., 2002. Enamel tensile bond strength and morphology of resin-enamel interface created by acid etching system with or without moisture and self-etching priming system. J. Oral Rehabil., 29(6):528-533.

[42]Triana, R., Prado, C., Garro, J., García-Godoy, F., 1994. Dentin bond strength of fluoride-releasing materials. Am. J. Dent., 7(5):252-254.

[43]Valente, R.M., de Rijk, W.G., Drummond, J.L., Evans, C.A., 2002. Etching conditions for resin-modified glass ionomer cement for orthodontic brackets. Am. J. Orthod. Dentofacial Orthop., 121(5):516-520.

[44]van Landuyt, K.L., Kanumilli, P., de Munck, J., Peumans, M., Lambrechts, P., van Meerbeek, B., 2006. Bond strength of a mild self-etch adhesive with and without prior acid-etching. J. Dent., 34(1):77-85.

[45]van Landuyt, K.L., Snauwaert, J., de Munck, J., Peumans, M., Yoshida, Y., Poitevin, A., Coutinho, E., Suzuki, K., Lambrechts, P., van Meerbeek, B., 2007. Systematic review of the chemical composition of contemporary dental adhesives. Biomaterials, 28(26):3757-3785.

[46]van Meerbeek, B., Peumans, M., Poitevin, A., Mine, A., van Ende, A., Neves, A., de Munck, J., 2010. Relationship between bond-strength tests and clinical outcomes. Dent. Mater., 26(2):e100-e121.

[47]van Meerbeek, B., Yoshihara, K., Yoshida, Y., Mine, A., de Munck, J., van Landuyt, K.L., 2011. State of the art of self-etch adhesives. Dent. Mater., 27(1):17-28.

[48]Wang, C., Li, Y., Wang, X., Zhang, L., Tang, T., Fu, B., 2012. The enamel microstructures of bovine mandibular incisors. Anat. Rec., 295(10):1698-1706.

[49]Wilson, A.D., Kent, B.E., 1972. A new translucent cement for dentistry. The glass ionomer cement. Br. Dent. J., 132(4):133-135.

[50]Wiltshire, W.A., 1994. Shear bond strengths of a glass ionomer for direct bonding in orthodontics. Am. J. Orthod. Dentofacial Orthop., 106(2):127-130.

[51]Xie, D., Brantley, W.A., Culbertson, B.M., Wang, G., 2000. Mechanical properties and microstructures of glass-ionomer cements. Dent. Mater., 16(2):129-138.

[52]Yassen, G.H., Platt, J.A., Hara, A.T., 2011. Bovine teeth as substitute for human teeth in dental research: a review of literature. J. Oral Sci., 53(3):273-282.

[53]Yelamanchili, A., Darvell, B.W., 2008. Network competition in a resin-modified glass-ionomer cement. Dent. Mater., 24(8):1065-1069.

[54]Yoshida, Y., van Meerbeek, B., Nakayama, Y., Snauwaert, J., Hellemans, L., Lambrechts, P., Vanherle, G., Wakasa, K., 2000. Evidence of chemical bonding at biomaterial-hard tissue interfaces. J. Dent. Res., 79(2):709-714.

[55]Yoshida, Y., van Meerbeek, B., Nakayama, Y., Yoshioka, M., Snauwaert, J., Abe, Y., Lambrechts, P., Vanherle, G., Okazaki, M., 2001. Adhesion to and decalcification of hydroxyapatite by carboxylic acids. J. Dent. Res., 80(6):1565-1569.