J Dent Rehabil Appl Sci.  2022 Mar;38(1):18-25. 10.14368/jdras.2022.38.1.18.

The color stability and antibacterial of provisional polyethyl methacrylate (PEMA) resin with zirconia nanoparticles

• Kim HS
• Lee SK
• Jang W
• Park C
• Lim HP

• KMID: 2534973
• DOI: http://doi.org/10.14368/jdras.2022.38.1.18

Abstract

Purpose
This study aimed to evaluate the color stability and antibacterial properties of the surface of polyethyl methacrylate (PEMA) resin with zirconia nanoparticles added.
Materials and Methods
The control group was pure PEMA resin, and the experiment group was PEMA resin 15 mm in diameter and 2.5 mm in thickness disk-shaped specimens with 2, 4 and 8 w/v% of zirconia nanoparticles added, which were respectively divided into Group Z2, Group Z4, and Group Z8. After analyzing the surface roughness and color stability of the specimens, their antibacterial properties were evaluated using Porphyromonas gingivalis (P. gingivalis). The Statistical analysis was performed using when normality was met in the Shapiro-Wilk test, one-way ANOVA was used to test parameters, and Tukey’s test was used as a post hoc test. When normality was not met, the Kruskal-Wallis test, a non-parametric test was used (P < 0.05).
Results
The surface roughness measurement found that there was no significant difference between the experimental and control groups. The color stability evaluation showed that the Z2, Z4, and Z8 groups were within the color range of natural teeth. The adhesion of P. gingivalis was evaluated to be significantly reduced in Group Z2 compared to the control group (P < 0.05). In the Z2 group, Z4 group, and Z8 group, dead cells bacteria than the control group were observed.
Conclusion
In conclusion, PEMA resin with zirconia nanoparticles added was within the range of natural teeth in color and reduced the adhesion of P. gingivalis

Keyword

temporary crown resin; polyethyl methacrylate resin; zirconia nanoparticles; color stability; antibacterial effect