Effect of Zirconium Oxide Nano-Fillers Addition on Mechanical Properties of Heat-Polymerized Acrylic Resin

Serry, Mohamed; Ebrahim, Mohamed I.

doi:10.21608/adjg.2016.5068

Cited by 4 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…% loading, after that it showed gradually decreasing trend with further content increase, as indicated in Figure 3. This may be due to complete saturation of the polymer matrix with Al2O3 NWs and ZrO2 NPs, or may be the weak interaction between Al2O3 NWs after 0.5 wt.% and ZrO2 NPs after 0.7 wt.% with PMMA, that leads to less effective stress transfer between PMMA and the reinforcement materials [22,28,40] .…”

Section: Resultsmentioning

confidence: 99%

Mechanical and Tribological Performance of Self-Cured Poly Methyl Methacrylate Reinforced by Alumina Nanowires and Zirconia Nanoparticles for Denture Applications

Hassan¹,

El-Sheikh²,

Ali³

et al. 2021

Mater. Plast.

View full text Add to dashboard Cite

Polymethyl methacrylate (PMMA) is one of the common widely accepted biomaterials in prosthetic dentistry due to its acceptable advantages, since 1937. In the present work, PMMA reinforced with Al2O3 nanowires (Al2O3 NWs) and ZrO2 nanoparticles (ZrO2 NPs) were fabricated by a self-curing method. Mechanical and tribological tests were conducted to study the effect of nanofillers on the mechanical and tribological performance of PMMA nanocomposites. Compression and microhardness tests, as mechanical tests, were accomplished to estimate the elastic modulus and microhardness number of the present nanocomposites. Also, tribological properties of unfilled PMMA and its nanocomposites were realized by pin-on-disk tester under dry sliding conditions. Wear test was conducted at room temperature under applied loads of 10, 20, 30, 40, and 50 N at a constant sliding speed and distance of 1.256 m/s and 226 m, respectively to study wear rate and coefficient of friction (COF) of the nanocomposites. Experimental results revealed that the elastic modulus, microhardness, wear rate, and COF were enhanced with increasing nanofiller content up to 0.5 and 0.7 wt. % of Al2O3 NWs and ZrO2 NPs, respectively. Also, wear rate increased with increasing applied loads up to 50 N, while COF decreased with increasing applied loads up to 40 N. Finally, specimens� worn surfaces were examined and imaged using scanning electron microscope (SEM).

show abstract

Section: Resultsmentioning

confidence: 99%

Mechanical and Tribological Performance of Self-Cured Poly Methyl Methacrylate Reinforced by Alumina Nanowires and Zirconia Nanoparticles for Denture Applications

Hassan¹,

El-Sheikh²,

Ali³

et al. 2021

Mater. Plast.

View full text Add to dashboard Cite

show abstract

“…Also, using mixture of ZrO 2 / TiO 2 22 introduced higher property values. Al 2 O 3, Zr 2 O 3 , and SiO 2 were used as nano-filler for nanocomposite denture base 23,24 . Titanium dioxide is one of the best nanoparticles used by researchers in the medical field due to its unique characteristic.…”

Section: Introductionmentioning

confidence: 99%

Water Temperature Effect on Hardness and Flexural Strength of (PMMA/TiO2 NPs) for Dental Applications

Alraziqi

2022

Baghdad Sci.J

View full text Add to dashboard Cite

PMMA (Poly methyl methacrylate) is considered one of the most commonly used materials in denture base fabrication due to its ideal properties. Although, a major problem with this resin is the frequent fractures due to heavy chewing forces which lead to early crack and fracture in clinical use. The addition of nanoparticles as filler performed in this study to enhance its selected mechanical properties. The Nanoadditive effect investigated in normal circumstances and under a different temperature during water exposure. First, tests applied on the prepared samples at room temperature and then after exposure to water bath at (20, 40, 60) C ° respectively. SEM, PSD, EDX were utilized for samples evaluation in this study. Flexural strength, shear stress, hardness value were evaluated for all samples, the tests applied periodically at (15,30, 45) min. Interestingly, it is found that at the normal condition (NC) the cooperation of TiO 2 NPs significantly improves the selected properties. The maximum increase is located at 4 wt % of TiO 2 NPs addition. The results also showed that temperature increase accelerate the water permeability within all samples thus decrease the mechanical properties. Obviously, a better hardness value determined for the prepared nanocomposite comparing to the control group at the same test condition.

show abstract

“…(1) However, this material is still deficient to achieve the ideal mechanical requirements for dental applications, mainly due to its low fracture resistance and plaque accumulation. (2,3) Different fillers, metal oxides, and carbon graphite fibers are blended into the composition to improve the mechanical properties of the resin. (4,5) One of the most promising newly used fillers to overcome strength deficiency is the addition of nanoparticles into PMMA to act as the reinforcing material.…”

Section: Introductionmentioning

confidence: 99%

Microtensile bond strength of zirconia nanofillers reinforced acrylic resin to denture teeth after thermocycling

El-Tamimi

Bayoumi

2021

Egyptian Dental Journal

View full text Add to dashboard Cite

Statement of problem: Addition of zirconium oxide nanofillers to PMMA had improved the mechanical properties of heat polymerized acrylic resin, but it's effect on bond strength to acrylic teeth hadn't been evaluated yet. Purpose: The purpose of the study was to evaluate the effect of Zirconium oxide (ZrO 2) nanofillers powder with different concentrations (1.5%, 3%, 5%) on bond strength of resin denture base to acrylic teeth before and after thermocycling. Material and methods: Zirconium oxide nanoparticles powder were added to heat cured (PMMA) with different concentrations (0, 1.5% ,3%, 5%). The base surfaces of 16 molar acrylic teeth were flattened, and zirconia reinforced heat-polymerized acrylic resin was applied to them. Thereafter, bar specimens were produced for the microtensile bond strength testing either before or after thermocycling. Results: The results showed that 5% ZrO 2 conc. recorded the highest value of microtensile bond strength. The lowest value was recorded in 1.5%, followed by 3%. Regarding thermocyling, the non-thermocycled groups always recorded higher values of microtensile bond strength either significant (1.5% & 5%) or insignificant (0% & 3%) than thermocycled ones at p < 0.05. Conclusions: Within the limitation of this study, it was concluded that reinforcement of acrylic denture base with zirconia nanofillers had significantly decreased bond strength with acrylic denture teeth in 1.5 % and 3% concentration; however, 5% had increased the bond strength values insignificantly. Thermocycling had reduced the bond strength in all concentrations.

show abstract

Effect of Zirconium Oxide Nano-Fillers Addition on Mechanical Properties of Heat-Polymerized Acrylic Resin

Cited by 4 publications

References 20 publications

Mechanical and Tribological Performance of Self-Cured Poly Methyl Methacrylate Reinforced by Alumina Nanowires and Zirconia Nanoparticles for Denture Applications

Mechanical and Tribological Performance of Self-Cured Poly Methyl Methacrylate Reinforced by Alumina Nanowires and Zirconia Nanoparticles for Denture Applications

Water Temperature Effect on Hardness and Flexural Strength of (PMMA/TiO2 NPs) for Dental Applications

Microtensile bond strength of zirconia nanofillers reinforced acrylic resin to denture teeth after thermocycling

Contact Info

Product

Resources

About