Iranian Journal of Materials Science and Engineering

en Mechanical Properties of Glass-Ionomer Cement Composited by ZrO2 and CaMgSi2O6 in Submicron Particle Size: Their Acidic-Basic Behaviors in The Presence of Poly Acrylic Acid گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper Glass ionomer cements (GICs) are widely utilized in clinical restorative dental applications, which suffer from poor mechanical strength. Recent research shows that GIC achieves optimal performance when modified with lower percentage of filler materials, particularly when using nanoparticles, due to the resultant increase in surface area and packing density of the cement. Notably, while some modifications show promise, others fail to deliver improvements in material characteristics. This study addressed a gap in the literature by investigating the impact of acidic/basic additives, such as Diopside (CaMgSi2O6) and Zirconia (ZrO2), on the properties of the cement. The reactivity of zirconia and Diopside differ distinctly from traditional calcium-aluminosilicate glass when exposed to acidic conditions in GICs. Also, to clarify the impact of acidity/basicity on filler reactivity during cement setting, the potential mechanical enhancement effects by using nano-sized particles is limited to submicrons. This research incorporated Diopside at concentrations of 2, 4, and 6 wt.%, and zirconia at 8, 10, and 12 wt.% into a glass powder component. Results demonstrated that adding 8 wt.% Zirconia led to a 49% enhancement in compressive strength, also improve microhardness by 16 wt.%, attributed to its non-reactive nature, minimal dissolution, and high inherent strength of ZrO2. In contrast, Diopside had a detrimental effect due to its basic nature compared to that of glass powder. These findings highlight the potential of zirconia as a valuable reinforcing material for the successful mechanical performance of glass ionomer cements. Conversely, basic fillers like diopside appear unsuitable for achieving improved mechanical performance in these systems. ZrO2,Diopside,Glass Ionomer Cements,Mechanical Properties,Dental Materials. 48 59 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5484-2&slc_lang=en&sid=1 Farzaneh sadat Teimoory Toufal farzaneh.teimoory@gmail.com 1800319475328460020970 1800319475328460020970 No School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran Alma Kalali alma1373kalali@gmail.com 1800319475328460020971 1800319475328460020971 No School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran Arvin Attari navab Arvinattarinavab@gmail.com 1800319475328460020972 1800319475328460020972 No Research Department of Nano-Technology and Advanced Materials, Materials and Energy Research Center, karaj, Iran. Mohadeseh Reyhani Mohadeseh_reyhani@metaleng.iust.ac.ir 1800319475328460020973 1800319475328460020973 No School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran Hamidreza Rezaie hrezaie@iust.ac.ir 1800319475328460020974 1800319475328460020974 Yes School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran Jafar Javadpour javadpourj@iust.ac.ir 1800319475328460020975 1800319475328460020975 No School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran