Various Mechanical Properties of Denture Liners Combined with Zirconium Oxide Nanoparticles

Authors : Gulfem ERGUN, Ayşe Seda ATAOL, Ferhan EGİLMEZ, Rükan GENC ALTURK, Zeynep ŞAHİN

Pages : 1000-1014

Doi:10.35378/gujs.765054

View : 15 | Download : 5

Publication Date : 2021-12-01

Article Type : Research Paper

Abstract :Debonding from the denture base, poor resistance to tearing, and increase in hardness are some of the problems with denture liners. This research purposed to analyze the changes in mechanical characteristics of the tissue conditioner and the denture liner concerning the interaction of the material with the zirconium oxide nanoparticles insert ignore into journalissuearticles values(ZrO2-NPs);. The surface functionalization of ZrO2-NPs was done using a silane coupling agent as a modifier for better integration of them into the denture liners. Then, they were added into acrylic- and silicone-based denture liner in two different percentages insert ignore into journalissuearticles values(0.5% and 1% by weight; respectively);. The performed tests were tear strength, tensile bond strength, and hardness insert ignore into journalissuearticles values(Shore A);. 0.5% and 1% of ZrO2-NPs added tissue conditioner test groups displayed statistically significantly lower tensile bond strength values than tissue conditioners without ZrO2-NPs insert ignore into journalissuearticles values(p < 0.001);. However, the tensile bond strength results of all subgroups for soft denture liner were statistically similar insert ignore into journalissuearticles values(p = 0.239);. In all of the test groups of tissue conditioner and soft lining material, the highest tear strength values were obtained in 0.5% ZrO2-NPs added test groups insert ignore into journalissuearticles values(tissue conditioner; 0.58±0.11 N and soft denture liner; 4.10±0.58 N);. The shore A hardness results of both tested groups determined no meaningful differences insert ignore into journalissuearticles values(p = 0.100);. All subgroups of the tested silicone-based denture liners had satisfactory and clinically adequate bonding strength to the base of the prosthetic. 
Keywords : Zirconium oxide, Nanoparticles, Soft denture liner, Tissue conditioner, Mechanical properties