Zinc-doped nanoparticles tied to high performance in restorative dentistry: Study
Zinc-doped nanoparticles (NPs) are associated with high performance in restorative dentistry, suggests a study published in the Journal of Dentistry.
A group of researchers from Spain conducted a study to state the different applications and the effectiveness of polymeric zinc-doped nanoparticles to achieve dentin remineralization.
The researchers conducted a thorough literature search using electronic databases, such as PubMed, MEDLINE, DIMDI, Embase, Scopus and Web of Science. A narrative exploratory review was undertaken.
The researchers found that:
· Polymeric nanospheres (NPs) were efficiently loaded with zinc. Polymeric nanospheres (NPs) sequestered calcium and phosphate in the presence of silicon, and remained effectively embedded at the hybrid layer.
· NPs incorporation did not alter bond strength and inhibited MMP-mediated dentin collagen degradation. Zn-loaded Polymeric nanospheres (NPs) remineralized the hybrid layer inducing a generalized low-carbonate substitute apatite precipitation, chemically crystalline with some amorphous components, and an increase in mechanical properties were also promoted.
· Viscoelastic analysis determined that dentin infiltrated with Zn-loaded Polymeric nanospheres (NPs) released the stress by breaking the resin-dentin interface and creating specific mineral formations in response to the energy dissipation. Bacteria were scarcely encountered at the resin-dentin interface.
· The combined antibacterial and remineralizing effects, when Zn-loaded Polymeric nanospheres (NPs) were applied, reduced biofilm formation. Zn-loaded Polymeric nanospheres (NPs) application at both cervical and radicular dentin attained the lowest microleakage and also promoted durable sealing ability.
· The new zinc-based salt minerals generated covered the dentin surface totally occluding cracks, porosities and dentinal tubules.
· Thus, the researchers concluded that Zn-loaded Polymeric nanospheres (NPs) are proposed for effective dentin remineralization and tubular occlusion.
· Zn-NPs do not alter dentin bond strength, inhibit MMP and perform as antibacterial.
· Zn-doped NPs promote amorphous and stoichiometric apatites formation at dentin.
Reference:
A study titled, "Polymeric zinc-doped nanoparticles for high performance in restorative dentistry" by Toledano M et. al published in the Journal of Dentistry.
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