Evaluation of Microleakage at the Junction Between Combined Amalgam/Composite Resin Restorations Using Different Bonding Systems in Class II Cavities


  • Elham Zajkani
  • Fatemeh Omidi
  • Zahra Taromi


Dental Leakage, Dental Restoration, Permanent, Dental Amalgam, Dental Bonding


Objective: To evaluate the microleakage at the junction between amalgam-composite resin restorations using different bonding systems. Material and Methods: In this in-vitro study, standard class II cavities were prepared on 40 human maxillary premolars. The axial and gingival floor depths of the cavities were 2 mm and 1 mm below (cementoenamel junction), respectively. The samples were divided into 4 groups (n = 10). In all groups, a layer of 1-mm thick amalgam was used as a coating for the initial part of the gingival floor. In group 1, no bonding system was used for amalgam restoration. In group 2, G-Premio Bond was applied. G-Premio bond + alloy primer and single bond + alloy primer were used in group 3 and group 4, respectively. The rest of the cavities in all groups were then repaired using FiltekZ250 composite. The samples were thermocycled at 500 rpm and immersed in 1% methylene blue solution for 24 hours to allow dye penetration. Once cut, the samples were placed under a stereomicroscope (40X) to determine the microleakage rate. Data analysis was carried out using post-hoc and Chi-square tests (p<0.05). Results: The highest and lowest microleakage rate was related to groups 1 and 3, respectively. There was a significant difference between groups (1,2) and (1,3), and (1,4), and groups (2,3) (p<0.05). Conclusion: The use of alloy primer and bonding could reduce the microleakage between the two restorations.


Pashley DH, Tay FR, Breschi L, Tjäderhane L, Carvalho RM, Carrilho M, et al. State of the art etch-and-rinse adhesives. Dent Mater 2011; 27(1):1-16. https://doi.org/10.1016/j.dental.2010.10.016

Van Meerbeek B, Willems G, Celis J-P, Roos J, Braem M, Lambrechts P, et al. Assessment by nano-indentation of the hardness and elasticity of the resin-dentin bonding area. Dent Res J 1993; 72(10):1434-42. https://doi.org/10.1177/00220345930720101401

Murray PE, Hafez AA, Smith AJ, Cox CF. Bacterial microleakage and pulp inflammation associated with various restorative materials. Dent Mater 2002; 18(6):470-8. https://doi.org/10.1016/s0109-5641(01)00072-0

Demarco F, Ramos O, Mota C, Formolo E, Justino L. Influence of different restorative techniques on microleakage in class II cavities with gingival wall in cementum. Oper Dent 2001; 26(3):253-9.

Kaur G, Singh M, Bal C, Singh U. Comparative evaluation of combined amalgam and composite resin restorations in extensively carious vital posterior teeth: An in vivo study. J Conserv Dent 2011; 14(1):46-51. https://doi.org/10.4103/0972-0707.80742

Blum IR, Hafiana K, Curtis A, Barbour ME, Attin T, Lynch CD, et al. The effect of surface conditioning on the bond strength of resin composite to amalgam. J Dent 2012; 40(1):15-21. https://doi.org/10.1016/j.jdent.2011.10.019

Chang JC, Hurst TL, Hart DA, Estey AW. 4-META use in dentistry: a literature review. J Prosthet Dent 2002; 87(2):216-24. https://doi.org/10.1067/mpr.2002.121584

Özcan M, Koolman C, Aladag A, Dündar M. Effects of different surface conditioning methods on the bond strength of composite resin to amalgam. Oper Dent 2011; 36(3):318-25. https://doi.org/10.2341/10-294-L

Davari A, Daneshkazemi A, Assarzadeh H, Karabi M, Mirhoseini F. Comparing effect of four different restorative techniques with composite on gingival seal located on the dentin. JSSU 2014; 22(3):1196-207.

Turkistani A, Nasir A, Merdad Y, Jamleh A, Alshouibi E, Sadr A, et al. Evaluation of microleakage in class-II bulk-fill composite restorations. J Dent Sci 2020; 15(4):486-92. https://doi.org/10.1016/j.jds.2020.04.007

Bakhsh TA, Sadr A, Shimada Y, Turkistani A, Abuljadayel R, Tagami J. Does lining class-II cavities with flowable composite improve the interfacial adaptation?. J Adhes Sci Technol 2020; 34(4):400-16. https://doi.org/10.1080/01694243.2019.1676589

Turkistani A, Ata A, Alhammad R, Ghurab R, Alahmadi Y, Shuman M, et al. Bulk-fill composite marginal adaptation evaluated by cross-polarization optical coherence tomography. Cogent Engineering 2019; 6(1):1-10. https://doi.org/10.1080/23311916.2019.1643976

Hovav S, Holan G, Lewinstein I, Fuks A. Microleakage of class 2 Superbond-lined composite restorations with and without a cervical amalgam base. Oper Dent 1995; 20(2):63-7.

Belli S, Ünlü N, Özer F. Effect of cavity varnish, amalgam liner or dentin bonding agents on the marginal leakage of amalgam restorations. J Oral Rehabil 2001; 28(5):492-6. https://doi.org/10.1046/j.1365-2842.2001.00676.x

Tolidis K, Boutsiouki C, Gerasimou P. Microleakage in combined amalgam/composite resin restorations in MOD cavities. Bra J Oral Sci 2013; 12(2):100-4.

Ziskind D, Venezia E, Kreisman I, Mass E. Amalgam type, adhesive system, and storage period as influencing factors on microleakage of amalgam restorations. J Prosthet Dent 2003; 90(3):255-60. https://doi.org/10.1016/s0022-3913(03)00421-9

Ozer F, Unlu N, Ozturk B, Sengun A. Amalgam repair: evaluation of bond strength and microleakage. Oper Dent 2002; 27(2):199-203.

Çehreli S, Arhun N, Celik C. Amalgam Repair: Quantitative evaluation of amalgam-resin and resin-tooth interfaces with different surface treatments. Oper Dent 2010; 35(3):337-44. https://doi.org/10.2341/09-135-L

Bulbul M, Kesim B. The effect of primers on shear bond strength of acrylic resins to different types of metals. J Prosthet Dent 2010; 103(5):303-8. https://doi.org/10.1016/S0022-3913(10)60063-7

Di Francescantonio M, Oliveira MTd, Daroz LGD, Henriques GEP, Giannini M. Adhesive bonding of resin cements to cast titanium with adhesive primers. Braz Dent J 2012; 23(3):218-22. https://doi.org/10.1590/S0103-64402012000300006

Fonseca RG, Haneda IG, Adabo GL. Effect of metal primers on bond strength of resin cements to base metals. J Prosthet Dent 2009; 101(4):262-8. https://doi.org/10.1016/S0022-3913(09)60050-0

Machado C, Sanchez E, Alapati S, Seghi R, Johnston W. Shear bond strength of the amalgam-resin composite interface. Oper Dent 2007; 32(4):341-6. https://doi.org/10.2341/06-100

Sarabi N, Moosavi H. The effect of three different amalgam surface treatment methods on composite-amalgam fracture strength. J Mash Dent Sch 2006; 30(1-2):71-8.

Giannini M, Paulillo LAMS, Ambrosano GMB. Effect of surface roughness on amalgam repair using adhesive systems. Braz Dent J 2002; 13(3):179-83. https://doi.org/10.1590/S0103-64402002000300007

Poggio C, Beltrami R, Colombo M, Chiesa M, Scribante A. Influence of dentin pretreatment on bond strength of universal adhesives. Scand J Dent Res 2017; 3(1):30-5. https://doi.org/10.1080/23337931.2017.1305273

Tsujimoto A, Barkmeier WW, Takamizawa T, Wilwerding T, Latta MA, Miyazaki M. Interfacial characteristics and bond durability of universal adhesive to various substrates. Oper Dent 2017; 42(2):E59-E70. https://doi.org/10.2341/15-353-L




How to Cite

Zajkani, E., Omidi, F., & Taromi, Z. (2022). Evaluation of Microleakage at the Junction Between Combined Amalgam/Composite Resin Restorations Using Different Bonding Systems in Class II Cavities. Pesquisa Brasileira Em Odontopediatria E Clínica Integrada, 22, e210148. Retrieved from https://revista.uepb.edu.br/PBOCI/article/view/1587



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