The effect of adding silver nanoparticles on the color stability of feldspathic porcelains

Abstract

Background: This study aims to investigate the color stability of feldspathic porcelains with
different concentrations of silver nanoparticles (AgNPs).
Materials and Methods: In this experimental study, feldspathic porcelain disks with AgNPs of
0 parts per million (ppm), 250 ppm, and 500 ppm were used (sample size = 180). These ceramic
discs were subjected to thermocycling in tea, orange juice, and artificial saliva. The optical parameters
of disks were measured before and after being immersed in the solutions. Then, the color change
(ΔE 00) of the samples was measured by using the CIEDE 2000 formula. The data were analyzed
by one‑way analysis of variance (ANOVA) and Tukey’s post hoc test. The level of significance was
determined to be 0.05.
Results: The results of the ANOVA test show that there was a significant difference in ΔE
00 (P ≤ 0.05). The maximum ΔE 00 was visible in the samples with AgNPs 0 ppm that were exposed
to orange juice, and the minimum ΔE 00 was related to the disks with AgNPs 500 ppm in artificial
saliva.
Conclusion: Based on the results of this study, adding AgNPs to feldspathic porcelain increases
the color stability of the ceramic discs.
Key Words: Color, dental porcelain, nanoparticles, silver, tooth discoloration

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Saeed Nikanjam: Pubmed,Google Scholar