Effect of addition of Magnesium Oxide Nanoparticles on  surface hardness and tensile bond strength of denture soft liner

Authors

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.

Hoshang Khalid Abdelrahman1 , Salem A.L. Salem Al-Sammaraie2

1Lecturer Dr Hawler Medical University, College of Dentistry, Department of Prosthodontics/Iraq,

2Prof. Dr. Hawler Medical University, College of Dentistry, Department of Prosthodontics/Iraq