Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2025
How Universal Adhesive Systems With Nanoencapsulated Flavonoids Improve Long-Term Bonding to Caries-Affected Dentin.
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Falconi-Páez Camila, Aldaz Mayra Alejandra Nuñez, Navarro Tobia Gastón, González-Vaca Claudia Carolina, Campos Lucas Arrais, Davila-Sanchez Andres, Arrais Cesar Augusto Galvão
Аннотация
OBJECTIVES: To determine the presence of nano-encapsulated flavonoids and their effect in universal adhesives on resin-dentin bond-strength (μTBS) and nanoleakage (NL) on artificial caries-affected dentin (CAD) after 24-h and 6 months of water storage (WS).
MATERIALS AND METHODS: Artificial CAD was created on the occlusal dentin surfaces of 60 human third molars by a microbiological assay. Nanoencapsulated quercetin (Q) and naringin (N) were incorporated into Prime&Bond Universal (PBU; Dentsply-Sirona) and Single Bond Universal (SBU, 3M ESPE). The adhesive systems with and without (control) flavonoids were applied to the CAD surface, and a 4-mm resin composite block (TPH Spectrum, Dentsply Sirona) was built up and light-cured. Specimens were sectioned into resin-dentin beams (0.8 mm2). The hybrid layer (HL) was subjected to micro-Raman analysis to detect N and Q. The specimens were tested in tension in a universal testing machine at 0.5 mm/min. μTBS and NL tests were performed after 24-h and WS. μTBS and NL data were analyzed using a nonparametric three-way ANOVA test followed by Bonferroni's test (α = 5%).
RESULTS: Q and N were detected within the HL. N and Q nanocapsules increased μTBS and reduced NL values after WS. At 24 h, the PBU group showed higher NL values than the SBU group, and the values decreased after WS.
CONCLUSIONS: Incorporating nanoencapsulated flavonoids may improve the longevity of universal bonding systems applied to CAD.
CLINICAL RELEVANCE: Adhesive restorations incorporating nanoencapsulated quercetin or naringin might be a promising alternative for achieving long-term bonding stability.
MATERIALS AND METHODS: Artificial CAD was created on the occlusal dentin surfaces of 60 human third molars by a microbiological assay. Nanoencapsulated quercetin (Q) and naringin (N) were incorporated into Prime&Bond Universal (PBU; Dentsply-Sirona) and Single Bond Universal (SBU, 3M ESPE). The adhesive systems with and without (control) flavonoids were applied to the CAD surface, and a 4-mm resin composite block (TPH Spectrum, Dentsply Sirona) was built up and light-cured. Specimens were sectioned into resin-dentin beams (0.8 mm2). The hybrid layer (HL) was subjected to micro-Raman analysis to detect N and Q. The specimens were tested in tension in a universal testing machine at 0.5 mm/min. μTBS and NL tests were performed after 24-h and WS. μTBS and NL data were analyzed using a nonparametric three-way ANOVA test followed by Bonferroni's test (α = 5%).
RESULTS: Q and N were detected within the HL. N and Q nanocapsules increased μTBS and reduced NL values after WS. At 24 h, the PBU group showed higher NL values than the SBU group, and the values decreased after WS.
CONCLUSIONS: Incorporating nanoencapsulated flavonoids may improve the longevity of universal bonding systems applied to CAD.
CLINICAL RELEVANCE: Adhesive restorations incorporating nanoencapsulated quercetin or naringin might be a promising alternative for achieving long-term bonding stability.