Polydopamine (PD), inspired by the wet adhesion mechanisms of mussel foot proteins, shows superior adhesive properties compared to traditional glass ionomer cement (GIC) for use on tooth enamel and dentin, paving the way for advances in restorative dentistry.
Recent research comparing the adhesive performance of these two materials revealed PD outperforms GIC, demonstrating promising potential for enhanced clinical outcomes. An investigative study used 120 human premolars, focusing on bond strengths and microstructural integrity through scanning electron microscopy (SEM) and shear bond testing.
The research categorized the samples based on the adhesive and substrate, applying detailed methods to assess bond quality. PD exhibited the highest bond strength to enamel, measured at 12.10 N, significantly outperforming GIC, which recorded values of just 5.03 N for enamel and 4.31 N for dentin.
SEM analysis illustrated fewer microcracks between PD and enamel, indicating stronger adhesion. The results suggest PD is not only more effective than GIC but also provides improved bonding properties, especially for enamel.
Historically, GIC has been used for its chemical bonding abilities but has limitations such as reduced durability. PD's unique chemistry offers covalent and noncovalent bonding, backed by its biocompatibility and antimicrobial properties.
This study proposes PD as a viable alternative for dental adhesive applications, particularly for enamel bonding. Future research will examine its long-term clinical efficacy and explore strategies to optimize adhesion to dentin.
The findings support the transition toward using PD more extensively in dental practices, as they highlight its significant advantages over GIC.