Citation Information :
F AS, Chavan S, R PP, P P, M S, G R. Comparative Evaluation of Shear Bond Strength between Pullulan-enhanced Bonding Agent and Conventional Bonding Agent: An In Vitro Study. World J Dent 2025; 16 (1):69-73.
Aim: To evaluate and compare the shear bond strength of pullulan (PL)-enhanced bonding agent and conventional bonding agent.
Materials and methods: A total of 45 intact human premolar teeth specimens were divided randomly into three groups, with 15 teeth specimens per group. These specimens were prepared and subjected to etching using 37% phosphoric acid. The group A specimens received conventional 5th-generation bonding agent (3M ESPE single bond), group B was treated with phosphorylated pullulan (PPL), and group C received PPL-enhanced 5th-generation bonding agent. Composite resin was then applied to all specimens, which were subsequently immersed in distilled water for 24 hours, followed by shear bond testing. ANOVA, followed by Tukey's post hoc test, was used to analyze the test results.
Results: The shear force required to debond the PPL-enhanced commercially available 5th-generation bonding agent applied restoration [26.78 megapascals (MPa)] was significantly higher compared to commercially available 5th-generation bonding agent (24.39 MPa) and PPL solution (21.36 MPa) as bonding agent.
Conclusion: The dentin bonding agent enhanced with PL biopolymer exhibited higher bond strength at the tooth-restoration interface compared to the conventional bonding agent.
Clinical significance: Composite restorative failures are common nowadays. Improving the bonding agent constituent can provide better bonding, thereby preventing composite failures and enhancing durability, which in turn leads to longer-lasting restorations and decreased need for frequent replacements in clinical practice.
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