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Impact of a plant-derived agent on bond strength of self-adhesive resin cement luting of glass-fiber posts
Journal article   Open access   Peer reviewed

Impact of a plant-derived agent on bond strength of self-adhesive resin cement luting of glass-fiber posts

Bárbara de Fátima Barbosa de Freitas, Italo Hudson Tavares Maia, Tainah Oliveira Rifane, Victor Pinheiro Feitosa, Diego Lomonaco Vasconcelos de Oliveira and Diego Martins de Paula
Brazilian dental journal, Vol.36, e236465
2025
DOI: 10.1590/0103-644020256465
PMCID: PMC12448668
PMID: 40990777
url
https://doi.org/10.1590/0103-644020256465View
Published (Version of record) Open Access

Abstract

This study aimed to evaluate the effectiveness of plant-derived compounds, lignin (LIG) and proanthocyanidin (PAC), either alone or in combination with EDTA, as pre-treatments for intraradicular dentin to enhance the push-out bond strength (PBS) of glass fiber posts (GFP) cemented with self-adhesive resin cement. Forty-two healthy human single-rooted premolars were prepared for GFP cementation and divided into the following groups based on the dentin pre-treatment: 1) Control: no pre-treatment; 2) EDTA: 17% EDTA; 3) LIG: 2% LIG; 4) PAC: 2% PAC; 5) EDTA-LIG: 17% EDTA + 2% LIG; and 6) EDTA-PAC: 17% EDTA + 2% PAC. All solutions were applied for 60 seconds. The GFPs were subsequently cemented using the self-adhesive resin cement RelyX U200. The roots (n = 7 per group) were sectioned into 1-mm thick discs and subjected to PBS testing after 1 week and 6 months. Statistical analysis was performed using two-way ANOVA followed by Tukey's test (p < 0.05). After one week, the Control and EDTA-LIG groups (p = 0.092) exhibited similar and high bond strength values compared to the EDTA, LIG, and EDTA-PAC, while the PAC showed the lowest PBS. After six months, the EDTA-LIG maintained its bond strength values (p < 0.001), with no significant differences from the other groups, except for the PAC. In conclusion, the intraradicular dentin pre-treatments exhibited behavior comparable to untreated RelyX U200 cement in the bonding between the fiberglass post and intraradicular dentin, except proanthocyanidin.
 Materials Testing Dental Bonding Glass - chemistry Humans In Vitro Techniques Post and Core Technique Proanthocyanidins - chemistry Resin Cements - chemistry

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