Effect of addition of Magnesium Oxide Nanoparticles on surface hardness and tensile bond strength of denture soft liner
Keywords:Soft liner, Nanoparticles, Magnesium Oxide.
Background and objective: This study was aimed to determine the effect of addition of 3% of Magnesium
Oxide Nanoparticles (MgONPs) on the surface hardness (SH) and tensile bond strength (TBS) of asilicone
based denture liner at various time intervals. Method: The SH and TBS of a silicone denture liner were
studied after addition of 3% by weight of MgONPs. A total of 140 samples were constructed. The samples
were divided into two main groups, control group and test group to which 3% of MgONPs were added.
Results: The SH of all the samples for both groups was significantly higher after a period of 6 months. For
TBS the pattern was reversed in which there was a decrease in the mean of TBS for both control and test
groups significantly. Conclusion: The addition of 3%(MgONPs) to Silicone denture liner causes a non
significant effect in the SH but significantly improves TBS.
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