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KMID : 1034420240490010009
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Restorative Dentistry & Endodontics
2024 Volume.49 No. 1 p.9 ~ p.9
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Pomegranate extract on eroded dentin: antioxidant action, bond strength and morphology of the adhesive interface after aging
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Thiago Vinicius Cortez
Nathalia Mancioppi Cerqueira
Julia Adornes Gallas
Wanderley Pereira Oliveira
Silmara Aparecida Milori Corona
Aline Evangelista Souza-Gabriel
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Abstract
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Objectives: This study aimed to evaluate the effect of pomegranate solution (Punica granatum) on eroded dentin through antioxidant action, shear bond strength (SBS) and interface morphology.
Materials and Methods: The 10% pomegranate peel extract was prepared by the lyophilization method. Punicalagin polyphenol was confirmed by high-performance liquid chromatography. Antioxidant activity was evaluated by capturing the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. For the SBS, 48 dentin fragments were divided into sound or eroded, and subdivided according to the pretreatment (n = 12): water or P. granatum. The surfaces were restored with self-etch adhesive and a bulk-fill resin (Ecosite; DMG). The SBS was done immediately (24 hours) and after thermal cycling + water storage (12 months). For scanning electron microscopy, 48 dentin fragments (24 sound and 24 eroded) received the same treatments as for SBS (n = 6), and they were analyzed after 24 hours and 12 months.
Results : The P. granatum had antioxidant action similar (p = 0.246) to the phenolic standard antioxidants. After 24 hours, eroded dentin had lower SBS than sound dentin (p < 0.001), regardless of the pretreatment. After 12 months, P. granatum maintained the SBS of sound dentin (13.46 ± 3.42 MPa) and eroded dentin (10.96 ± 1.90 MPa) statistically similar. The lowest values were found on eroded dentin treated with water (5.75 ± 1.65 MPa) (p < 0.001). P. granatum on eroded dentin caused peritubular demineralization and hybrid layer with resin tags.
Conclusions: The pomegranate extract had antioxidant action and preserved the adhesive interface of the eroded dentin.
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KEYWORD
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Antioxidant, Dentin-bonding agent, Punica granatum
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