Impact of simplified chemical treatment of semi-direct restorations cemented with self-adhesive resin cement on dentin bond durability and nanoleakage




Adhesiveness; Resin cements; Dental permanent filling; Dental restoration failure; Longevity.


The present study aimed to evaluate the impact of different chemical surface treatments and aging on dentin bond strength and nanoleakage of semi-direct restorations cemented with self-adhesive resin cement. One hundred and sixty semi-direct composite restorations (4.8 x 2.8 x 4.0 mm) were produced to fill dentin preparations in bovine tooth, and the specimens were divided into 8 groups according to chemical treatment [No treatment, Silane (S), Scotchbond™ Universal adhesive (SBU), and S+SBU], and aging time in water [24 h and 6 months]. Push-out bond strength (PBS) was measured through a universal testing machine (1.0 mm/min), failure modes by a dissecting microscope, and nanoleakage by scanning electron microscopy. Two-way ANOVA and Tukey's post-hoc (p<0.05) test were used to analyze PBS data, whilst failure modes and nanoleakage were analyzed descriptively. The bond durability was influenced by different chemical surface treatments after 6 months of aging in distilled water, with the best performance for the group that uses silane associated with the universal adhesive. Nanoleakage was greater at the dentin-cement interface, from the base of the restorations. However, the infiltration of silver crystals at the cement-resin interface was not influenced by the different chemical treatments applied. The results of the study suggest that self-adhesive cement promotes efficient adhesion to the interface that improves over time without the need for chemical surface treatment or when using SBU, with or without silane.

Author Biographies

Joselúcia da Nóbrega Dias, Federal University of Rio Grande do Norte

Postgraduate student in Dental Sciences, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil.

Andressa Eveline de Lima Ribeiro, Federal University of Rio Grande do Norte

Postgraduate student in Dental Sciences, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil.

Ana Margarida dos Santos Melo, Federal University of Rio Grande do Norte

Postgraduate student in Dental Sciences, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil.

Boniek Castillo Dutra Borges, Federal University of Rio Grande do Norte

Assistant Professor of Graduate in Dentistry, and Postgraduate Program in Dental Sciences, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil. 

Isauremi Assunção, Federal University of Rio Grande do Norte

Assistant Professor of Graduate in Dentistry, Specialization in Dentistry and Postgraduate Program in Dental Sciences, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil. 


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How to Cite

Dias, J. da N., Ribeiro, A. E. de L. ., Melo, A. M. dos S. ., Borges, B. C. D. ., & Assunção, I. (2020). Impact of simplified chemical treatment of semi-direct restorations cemented with self-adhesive resin cement on dentin bond durability and nanoleakage. Research, Society and Development, 9(11), e619119525.



Health Sciences