ArticleEuropean journal of oral sciences2026
Physicochemical characterization of etch-and-rinse adhesive system doped with catechin-loaded polymeric microparticles.
Article in European journal of oral sciences, 2026. 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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7 authors.
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Abstract
This study evaluated the incorporation of epigallocatechin-3-gallate (EGCG)-loaded poly(lactide-co-glycolide) (PLGA) microparticles into a two-step etch-and-rinse adhesive and their effects on physicochemical properties and EGCG release. EGCG was added to Single Bond 2 either directly (0.01% and 0.1% w/w) or encapsulated in PLGA 50:50 or 75:25 microparticles (0.5%-2% w/w). Cumulative release was measured by UV-Vis spectrophotometry. Degree of conversion (DC) was analyzed by Fourier transform infrared spectroscopy; flexural strength and elastic modulus (E) were tested in three-point bending; and water sorption (WS) and solubility (SL) were evaluated following ISO standards (n = 10). Microtensile bond strength (TBS) was tested after 24 h, 6, and 12 months. Data were analyzed by anova with significance set at p < 0.05. PLGA 50:50/EGCG at 1% showed the highest release, reaching 77.30 µg. No significant differences were found in DC, E, WS, and SL among the groups. Bond strengths remained stable in all experimental groups after 6 and 12 months, except for the control. Incorporating 1% EGCG-loaded PLGA 50:50 microparticles into Single Bond 2 may represent a promising strategy for controlled release without compromising physicochemical or mechanical properties.
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