Effects of binder and compression strength on molding parameters of dental ceramic blocks

Uz, Murat Mert; Aydınoğlu, Aysu; Yoruç, Afife Binnaz Hazar

doi:10.1016/j.ceramint.2020.01.010

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Based on the full width of the half-maximum (FWHM) peak broadening in Table 1, the peak broadening decreases when the temperature increases and signifies that the peak intensifies as temperature increases. When the temperature exceeds 1170°C, the zirconia transforms from monoclinic to tetragonal phase [13]. The addition of stabilizing oxide like CaO allows retention of tetragonal phase at room temperature [14].…”

Section: Resultsmentioning

confidence: 99%

Effect of Sintering Temperature on the Properties of Calcia-Stabilized Zirconia (Ca-SZ) Bioceramics

Johari

Ab‐Ghani

Shariff

et al. 2022

SSP

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This paper highlights the study on effect of sintering temperature on the morphologies and compressive strength of zirconia ceramics doped with calcium oxide (CaO) as stabiliser to enhance the zirconia structure undergo sudden phase transformation. CaO reportedly has good stability in cubic phase at all temperature, which open up a new possibility for new material to evolve for zirconia ceramic dental application. CaO synthesis from calcium nitrate tetrahydrate (Ca(NO3)2.4H2O) is used as metal precursor to produce Calcia-Sabilized Zirconia (Ca-SZ). 8 wt. % of Ca(NO3)2.4H2O and 92 wt. % of zirconium oxide (ZrO2) mixed and stirred together with ethanol as solvent and sintered at temperatures 1200, 1300 and 1400°C. Surface morphologies are investigated by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX) element analysis, X-ray Diffraction (XRD) for composition studies, as well as compressive strength to figure out the mechanical properties of Ca-SZ sample. Increment in sintering temperature enhance the surface morphologies, the phase of Ca-SZ become intensified and transformed from monoclinic to tetragonal ZrO2 also flexural strength increases as well. The compressive strength recorded the highest value of 4537 MPa for Ca-SZ at temperature of 1400°C. The optimal temperature of Ca-SZ suitable for dental application was 1400°C due to the good morphologies and mechanical properties suitable for teeth restoration. The development of Ca-SZ can establish a pathway as an alternative material for dental applications.

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Section: Resultsmentioning

confidence: 99%

Effect of Sintering Temperature on the Properties of Calcia-Stabilized Zirconia (Ca-SZ) Bioceramics

Johari

Ab‐Ghani

Shariff

et al. 2022

SSP

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“…Because of its superior mechanical properties, biocompatibility to human tissues and improved optical properties, 3Y-TZP ceramics have become increasingly important in recent decades as biomaterials for restorations, being widely used commercially in the manufacture of crowns, dental prostheses and implants (Pieralli et al, 2017;Zhang & Lawn, 2019;Li et al, 2014;Afrashtehfar & Fabbro, 2019;Gautam et al, 2016). The final mechanical properties of Y-TZP ceramics depend on some parameters, including the fraction of grains retained in the tetragonal phase at room temperature that is depended on, the grain size and shape, yttria content, and the degree of restriction exerted on them by the matrix (Guazzato et al, 2004;Muñoz-Tabares et al, 2011;Zhang & Lawn, 2018;Uz et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of an experimental 3Y-TZP dental ceramic prepared by polymeric precursors method

Prado¹,

Simões

González

2020

RSD

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The aim of the investigation was to synthesize 3 mol% yttria-stabilized zirconia (3Y-TZP) powders via polymeric precursor method (PPM). The precursor solution was preheated at 350ºC for 3h, subsequently thermally treated at 500ºC for 3h and 800ºC for 6h. The obtained materials were analyzed by Thermogravimetry-Derivative Thermogravimetry (TG/DTG), Differential Thermal Analysis (DTA), powder X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Two commercially available Y-TZP ceramic systems were chosen for comparison. XRD analysis of the synthesized 3Y-TZP powders revealed the crystallization of the tetragonal phase, while both commercial systems showed the coexistence of the monoclinic and tetragonal phases. SEM analysis showed that the powders thermally treated at 800°C consist of agglomerated spherical nanoparticles. Morphology of commercial systems also revealed nanosized spherical particles. Results revealed that the PPM led to ceramics with structural and morphological properties comparable to commercially available reinforced dental ceramics.

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“…The performance of zirconia ceramics is significantly affected by factors such as the molding techniques and sintering processes [7,8]. The preparation parameters of commercial zirconia are continuously optimized by various dental companies that process the powder into presintered zirconia blanks using different techniques, such as isostatic pressing or presintering processes [9].…”

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confidence: 99%

Current prospect of dental zirconia recycling: A scoping review

Yang,

Sun,

et al. 2024

J Prosthodont Res

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Zirconia, particularly yttria-stabilized tetragonal zirconia polycrystals (Y-TZPs), exhibits excellent mechanical properties [1]. The convenience of computer-aided design/computer-aided manufacturing (CAD/CAM) technology in machining presintered zirconia blanks has facilitated the widespread use of zirconia in dentistry. This technology provides dental laboratories and clinicians with a precise and practical means of producing dental restorations[2,3]. However, the CAD/CAM milling process generates large amounts of zirconia residues, leading to significant economic and environmental losses [4]. Approximately 30% of the milling dust is generated when fabricating restorations from a presintered zirconia blank [5]. In addi-tion, due to the retention of unprocessed presintered zirconia blanks, the total quantity of residuals generated is approximately 80% of the initial mass [4]. The presence of dental zirconia residuals poses challenges to the demand for raw zirconia materials and landfills [4,6]. Therefore, it is crucial to implement a rational recycling approach for J Prosthodont Res. 2024; **(**):

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Effects of binder and compression strength on molding parameters of dental ceramic blocks

Cited by 6 publications

References 15 publications

Effect of Sintering Temperature on the Properties of Calcia-Stabilized Zirconia (Ca-SZ) Bioceramics

Effect of Sintering Temperature on the Properties of Calcia-Stabilized Zirconia (Ca-SZ) Bioceramics

Synthesis and characterization of an experimental 3Y-TZP dental ceramic prepared by polymeric precursors method

Current prospect of dental zirconia recycling: A scoping review

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