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Journal of Ceramic Science and Technology 2/2025

Vol. 16, No. 2 · July 2025

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Comparison of the Composition and Pore Structure of Four Common Zisha from Yixing City after Firing

J. Wang, X. Zhu

Pages 77-84 · DOI: 10.4416/JCST2024-00031

Zisha teapots are the most famous among the multitude of types of pottery made in China. The high porosity of Zisha teapots may be the reason for their perfect effect in tea brewing. However, there are many types of Zisha (including purple clay, red clay, and Duan clay), and their chemical composition, phase composition and pore structure may also vary. Here, we investigated the relationship between the composition and pore structure of four types of Zisha. The pore distribution of Qingshuini Zisha (QSN-ZS) and Qinghui-Duan Zisha (QHD-ZS) in the range of 0.02 – 3 μm far exceeds that of the oth …

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Repair Bond Strength and Surface Roughness of Zirconia Ceramics Treated via Carbon Dioxide Laser, Malachite Green, and Sandblasting. A Lab-Based Study

Eman M Alhamdan

Pages 85-92 · DOI: 10.4416/JCST2024-00034

AIM Contemporary surface conditioners (carbon dioxide (CO2) laser at different power outputs and malachite green (MG) activated by low-level laser therapy (LLLT) on the surface roughness (Ra) and repair bond strength (RBS) of zirconia bonded to composite MATERIALS AND METHODS 104 discs were prepared from pre-sintered zirconia ceramic. The allocation of the samples was based on the surface conditioner: Group 1 (SB), Group 2 (CO2 laser-3 W), Group 3 (CO2 laser-4 W), and Group 4 (MG-LLLT). Ra analysis and surface topography were assessed using a profilometer and SEM. A ceramic repair kit and comp …

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Surface Topographic Variations and Shear Bond Strength of 3Y-TZP Treated with Al₂O₃ and Nd: YAG-lasers Operating at Short Pulse

S. Alresayes

Pages 101-106 · DOI: 10.4416/JCST2025-00002

Aim Influence of sandblasting (SB), hydrofluoric acid (HFA) and neodymium-yttrium aluminum garnet (Nd: YAG) laser working @nanosecond (ns) level on the surface roughness (Ra) and shear bond strength (SBS) of yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) bonded to resin cement.Methods 64 3Y-TZP discs were prepared and allocated into four groups based on the surface pretreatment method used (n = 16) Group 1 (No conditioning), Group 2 (SB), Group 3 (10% HFA gel) and Group 4 (ns-Nd: YAG laser). SEM was used to evaluate the surface topography following different conditioning regimes. R …

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Impact of Er; Cr: YSGG Laser at Different Power Outputs and Hydrofluoric Acid on the Shear Bond Strength and Color Stability of Lithium Disilicate Ceramic and Hybrid Ceramic

B. Almutairi, R. S. Al-Hamdan, S. Alresayes, H. Alsunbul, K. M. Alzahrani, T. Abduljabbar

Pages 93-100 · DOI: 10.4416/JCST2025-00001

Aim Influence of Er; Cr: YSGG laser (ECL) at different power outputs on the color change (ΔE) and shear bond strength (SBS) of lithium disilicate (LDC) and hybrid ceramics (HBC).Method 48 discs from each LDC discs (Group A) and HBC discs (Group B) were prepared and allocated into three subgroups: Subgroup-1(HFA), Subgroup-2 (ECL@3.5W), and Subgroup-3 (ECL@7W). ΔE assessment was performed on five samples from each subgroup. One specimen from each group underwent SEM to assess the topographic changes after conditioning. Resin cement was smeared onto the discs of ten samples from each group and t …

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Synthesis, Characterization, and Compositional Impact on the Thermal and Mechanical Properties of High-Entropy Carbides via High-Energy Ball Milling and Spark Plasma Sintering

H. Kim

Pages 69-76 · DOI: 10.4416/JCST2024-00018

High-entropy carbides (HECs) hold promise for high-temperature applications due to their potentially low thermal conductivity and strong mechanical properties. This study examines how compositional variations affect the thermal and mechanical properties of three HEC compositions: (Hf-Ta-Ti-Zr-Nb)C, (Ta-Ti-Nb-V-W)C, and (Hf-Ta-Ti-Nb-W)C. Synthesized via high-energy ball milling and spark plasma sintering, Composition A, characterized by its stable single-phase structure, exhibited the highest Vickers hardness (∼ 1 970 HV), fracture toughness (∼ 5.8 MPa·m1/2), and thermal conductivity (∼ 13 W/m· …

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A Critical Review on 3D-Printed Dental Ceramics in Prosthodontic Rehabilitation

L. Yao

Pages 51-68 · DOI: 10.4416/JCST2025-00005

Additive manufacturing (AM) technologies have transformed the way ceramic dental restorations are made, allowing for more complex designs and reducing material waste compared to traditional methods. This comprehensive review examines the current state of ceramic AM technologies in prosthodontic applications, focusing on three primary approaches: vat photopolymerization, direct inkjet printing, and 3D gel printing. Each technology presents distinct advantages and challenges in producing high-quality dental restorations. Critical processing parameters, including build orientation, layer thicknes …

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