Document Type

Article

Publication Date

1-8-2026

Abstract

Purpose: To evaluate the effect of remineralization and resin infiltration on microhardness, mineral content and microleakage in artificially-induced cervical enamel lesions. Materials and Methods: 50 human central incisors were assigned to 5 study groups (n=10) according to different surface intervention: Group 1: Positive Control (sound teeth not subjected to demineralization); Group 2: Negative Control (teeth subjected to demineralization); Group 3: CPP-ACP paste (remineralization of demineralized lesions with CPP-ACP, Tooth Mousse, GC); Group 4: HAp toothpaste (remineralization of demineralized lesions subjected with HAp, Herbadent Remin); Group 5: Resin infiltration (resin infiltration of demineralized lesions with ICON, DMG). Microhardness (MH) was evaluated using Vickers microhardness tester. Energy-dispersive X-ray spectroscopy (EDX) test was used to calculate mineral content (Ca, P) in weight%. Class V cavities were prepared in half of specimens, restored with nanohybrid composite and assessed for microleakage. Data were statistically analyzed using ANOVA/Tukey’s and Kruskal-Wallis/Mann-Whitney tests. Results: Demineralized enamel recorded the significantly lowest MH and mineral content and the highest microleakage score. While, CPP-ACP, HAp and ICON groups maintained high MH and Ca/P values and low microleakage scores, which were statistically similar to those of sound enamel. Conclusion: Remineralization and resin infiltration showed favorable outcomes in terms of restoring microhardness and increasing mineral content of demineralized enamel. They were also effective in reducing microleakage at composite-enamel margins.

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