Tribological behavior of zirconia-reinforced glass–ceramic composites in artificial saliva

Santos, R.L.P.; Buciumeanu, M.; Silva, Filipe; Souza, Júlio C. M.; Nascimento, Rubens Maribondo do; Motta, F. V.; Henriques, Bruno

doi:10.1016/j.triboint.2016.07.019

Cited by 37 publications

(11 citation statements)

References 29 publications

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“…5a). Other studies also showed that addition of ZrO 2 particles to the GIC improves microhardness [51,56], enhances the structural integrity of the restoration and transmits superior mechanical properties for posterior restoration [57,58]. Our results corroborated these findings, however, we found out that the best proportion of ZrO 2 to be used in restorations is 8.5%.…”

Section: Resultssupporting

confidence: 89%

“…A compressive strength test is a tool used by physicians and researchers to anticipate the performance of new restorative materials due to the need for material with better resistance properties to withstand the stress of masticatory forces. In fact, charging GIC with ZrO 2 improves the material mechanical properties, enhancing restoration structural integrity in load bearing areas due to the strong bonds established among ceramic glass matrix and ZrO 2 particles [24,29,[51][52][53]. Moreover, zirconia has transformational toughening property, which stops the growth of cracks, and confers strong mechanical properties to the composites [24,54] as could be observed in our results.…”

Section: Resultssupporting

confidence: 64%

“…GIC can be optimized by changing the particle size and composition of the glass [32]. As it was observed in our results, optimization (at 8.5% ZrO 2 ) is important since low concentrations of zirconia did not significantly increase the mechanical properties of the composite, while high concentrations lead to the formation of agglomerates that contribute negatively to its mechanical properties [51]. The superior mechanical properties found in this research is attributed to the inclusion of the correct zirconia charges and the homogeneity of the glass particles, which further increases the durability of the material and its strength to withstand the occlusal load [57].…”

Section: Resultssupporting

confidence: 58%

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Properties of zirconia-containing glass-ionomer cement

et al. 2019

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Glass-ionomer cements (GICs) are used as restorative dental materials due to their capacity to chemically adhere to enamel and dentin, low thermal expansion coefficient, and compatibility with dental structures. However, these materials have low resistance to wear and fracture. In this work, zirconia-reinforced GICs were prepared to evaluate the influence of particle size as well as ZrO2 content on their properties. All evaluated composites presented compressive strength values above the pure GIC strength. The highest compressive strength values were obtained with the addition of 8.5 wt% ZrO2. The average roughness obtained was not significantly changed compared to commercial GIC and the lowest value was for the composite with 10 wt% ZrO2 (50 mesh). In the microhardness test, the highest values were obtained with the addition of 8.5 wt% of ZrO2. Therefore, the results indicated that the addition of ZrO2 to GIC is an effective alternative to improve the quality of dental restorations.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 64%

Section: Resultssupporting

confidence: 58%

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Properties of zirconia-containing glass-ionomer cement

et al. 2019

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“…It also contains immunoglobulins and proteins such as mucin, albumin, and lysozyme [21][22][23]. From the point of view of tribological wear, the task of saliva is to reduce friction in the tooth-food and tooth-tooth systems [26,27].…”

Section: Introductionmentioning

confidence: 99%

Influence of Sandblasting Process on Tribological Properties of Titanium Grade 4 in Artificial Saliva for Dentistry Applications

et al. 2021

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Titanium Grade 4 (Ti G4) is widely used in medicine for dental implants. The failure-free life of implants depends on their properties such as resistance to wear and friction processes. This paper presents an analysis of the influence of sandblasting on tribological wear of commercial dental implants made of TiG4 in artificial saliva. Tribological wear measurements were performed in a reciprocating motion in the ball-on-disc system. The scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS) method was used to characterize the surface of the implants before and after the tribological wear test. The microhardness of Ti G4 was measured before and after sandblasting by the Vickers method. The contact angle was determined by the method of sitting drop in air. The residual stress test using the X-Ray Diffraction (XRD) single-{hkl} sin2ψ method was carried out. The compressive residual stress of 324(7) MPa and surface hardening of Ti G4 was revealed after sandblasting with Al2O3 particles of 53–75 μm in diameter. It was found that sandblasting changes the surface wettability of Ti G4. The intermediate wettability of the mechanically polished surface and the hydrophobicity of the sandblasted surface was revealed. Sandblasting reduces the tribological wear and friction coefficient of Ti G4 surface in saliva. The three-body abrasion wear mechanism was proposed to explain the tribological wear of Ti G4 in saliva.

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“…It is important to determine the mechanical and esthetic behavior of the materials placed within this structure over time. Many in vivo and in vitro test methods have been developed in the literature to carry out mechanical and esthetic resistance behavior of biomaterials [3,5,12,13]. However, researchers have a tendency to study in vitro because of in vivo studies have taken a very long time, the costs are high, and for ethical reasons.…”

Section: Discussionmentioning

confidence: 99%

Investigation of three‐body wear behavior and hardness of experimental titanium alloys for dental applications in oral environment

Yilmaz

2020

Materialwissenschaft Werkst

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The aim of this study was to investigate the three‐body wear resistance and hardness of commercially pure titanium and titanium alloys containing zirconium and tantalum (cp‐Ti, Ti‐5Zr and Ti‐5Ta). Each titanium test group, were subjected to wear tests under 105 wear cycles, 50 N mechanical force, 2.0 Hz wear frequency, 6 mm diameter Al2O3 antagonist ball, 5 °C/55 °C thermal change conditions immersed in poppy seed slurry as third‐body medium. The mean wear volume loss and depth of all test specimens after the three‐body wear tests was determined with use non‐contact 3D profilometer and also Vicker's hardness was measured. Wear area of microstructures were evaluated using scanning electron microscopy (SEM) and x‐ray diffraction (XRD) analysis. The hardness of Ti‐5Zr material was significantly greater than the other alloy material and cp‐Ti. However, for the test materials in this study considered, correlations between the three‐body wear resistance and hardness were found to be insignificant. It was concluded, the three‐body wear resistance of the alloy formed with the adding of zirconium and tantalum to the pure titanium is increased after wear tests.

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Tribological behavior of zirconia-reinforced glass–ceramic composites in artificial saliva

Cited by 37 publications

References 29 publications

Properties of zirconia-containing glass-ionomer cement

Properties of zirconia-containing glass-ionomer cement

Influence of Sandblasting Process on Tribological Properties of Titanium Grade 4 in Artificial Saliva for Dentistry Applications

Investigation of three‐body wear behavior and hardness of experimental titanium alloys for dental applications in oral environment

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