ArticleBrazilian dental journal2025
Impact of a plant-derived agent on bond strength of self-adhesive resin cement luting of glass-fiber posts.
Article in Brazilian dental journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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.
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