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EFFECT OF ADDING CHITOSAN NANOPARTICLES ON FLEXURAL STRENGTH AND HARDNESS OF HEAT CURED ACRYLIC RESIN BEFORE AND AFTER THERMO CYCLING

Research Authors
Ali Sayed* and Mohamed Mahmoud El Sokkary**
Research Abstract

ABSTRACT


Objective: The aim of this study was to evaluate the effect of two concentrations of chitosan
nanoparticles on the mechanical properties of heat polymerized acrylic resin before and after thermocycling.
The tested parameters were flexural strength and hardness.


Material and Methods: 120 specimens were prepared according to the specific dimension for
each test (flexural strength and micro hardness) and distributed into:
- Before thermocycling (control, chitosan nanoparticles with concentration 0.3% and 0.5%)
- After thermocycling (control, chitosan nanoparticles with concentration 0.3% and 0.5%)


Results: Flexural strength and micro hardness were tested for both groups. The data was collected
and statistically analyzed. Flexural strength was non-significantly increased for ratio of 0.3%
chitosan nanoparticles in comparison to control before and after thermo cycling and significantly
decreased for 0.5% chitosan nanoparticles before thermocycling and non-significant decrease after
thermocycling in comparison to control. For hardness showed non-significant decrease for both
concentrations and significant decrease for control after thermocycling


Conclusion: Adding chitosan nanoparticles to heat cured acrylic resin increased the flexural
strength for 0.3% ratio and non-significantly decreased for 0.5, while decreased non-significantly
micro hardness for both concentrations.

Research Date
Research File
Research Journal
EGYPTIAN DENTAL JOURNAL
Research Publisher
EGYPTIAN DENTAL JOURNAL
Research Rank
Local
Research Vol
69
Research Website
https://edj.journals.ekb.eg/article_294092.html
Research Year
2023
Research Pages
1181:1187