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The effect of zoledronate-containing primer on dentin bonding of a universal adhesive
Journal article   Peer reviewed

The effect of zoledronate-containing primer on dentin bonding of a universal adhesive

Walter Zenobi, Victor Pinheiro Feitosa, Maria Elisa Martins Moura, Camillo D'arcangelo, Lidiany Karla de Azevedo Rodrigues and Salvatore Sauro
Journal of the mechanical behavior of biomedical materials, Vol.77, pp.199-204
01/01/2018
DOI: 10.1016/j.jmbbm.2017.09.015
PMID: 28941405
url
http://hdl.handle.net/10637/10493View
Open Access

Abstract

Objectives: To evaluate the bonding ability and nanoleakage of a universal adhesive applied to dentin pre-treated using a zoledronate-containing primer (zol-primer) before and after mechanical load cycling. Materials and Methods: Flat dentin surfaces obtained from human molars were assigned to one of the following adhesion procedures (n=6): 1-Single Bond Universal (SBU) applied in etch-and-rinse mode; 2-SBU applied as etch-and-rinse after the application of zol-primer; 3-SBU applied in self-etch strategy; 4-SBU applied as self-etch after the use of zol-primer. Half of the specimens were processed for microtensile bond strength test after 24 h, while the other half part was submitted to 200,000 mechanical cycles. Further specimens were silver-impregnated and assessed for interface nanoleakage by SEM. Data were analyzed with two-way ANOVA and Tukey's test (p < 0.05). Results: At 24 h evaluation, the four groups presented similar bond strengths, whilst both groups bonded with etch-and-rinse technique showed significant bond strength reduction after mechanical load (p < 0.05), with the highest drop in bond strength for the specimens pre-treated with the zol-primer. No negative effects were found for self-etch strategy (p > 0.05) in microtensile test. Lower nanoleakage expression was observed for etch-and rinse specimens treated with zol-primer. However, noteworthy reduction of adhesive layer thickness was observed when combining the zol-primer with the self-etch bonding approach. Conclusion: It can be concluded that zol-primer should not be used along with a universal adhesive in etch-and rinse mode, but its application before self-etch application may provide less degradation of the resin-dentin interface.
 Engineering Materials Science Technology Engineering, Biomedical Materials Science, Biomaterials Science & Technology

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