The application of mussel-inspired molecule in dentin bonding

Journal of Dentistry
Kang LiCynthia K Y Yiu

Abstract

To evaluate the effect of dopamine methacrylamide (DMA) pretreatment on resin-dentin bond durability. Forty acid-etched dentin surfaces were randomly allocated into five groups, and pretreated with one of the primers: 0.1, 1.0, and 10 mmol/L DMA/ dimethyl sulfoxide (DMSO) solutions, pure DMSO, and deionized water (control) before bonding. The bonded teeth of each group were randomly distributed into an immediate subgroup (water storage at 37 °C for 24 h) and an aged subgroup (thermocycling, 5-55 °C, 10,000 times). The teeth were sectioned into 0.9 mm slabs; two middle slabs were used for nanoleakage evaluation, while the remaining slabs were sectioned into beams for micro-tensile bond strength (MTBS) test. Fractured mode and nanoleakage were observed under SEM. FTIR was used to assess the effect of primers on the degree of conversion (DC) of adhesive. The MTBS was significantly affected by primers (p <  0.001), aging conditions (p <  0.001) and their interactions (p <  0.001) as revealed by two-way ANOVA. Significant increase in nanoleakage was observed in both the aged control and DMSO groups when compared to their immediate values (p <  0.05); while no differences were observed in the aged DMA-treated groups (p >  0.05). Amon...Continue Reading

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Citations

Feb 14, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Kang LiCynthia Kar Yung Yiu
Sep 29, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Viviane HassYong Wang

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