ArticleDental materials : official publication of the Academy of Dental Materials2024
Current speed sintering and high-speed sintering protocols compromise the translucency but not strength of yttria-stabilized zirconia.
Article in Dental materials : official publication of the Academy of Dental Materials, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- A Novel Zirconia Composition for Speed Sintering with Enhanced Properties.Journal of dental research · 2026Article
- Effects of Sintering Parameters on the Microstructure and Optical Transmittance of Monolithic 4 mol% Yttria-Partially Stabilized Zirconia.Bioengineering (Basel, Switzerland) · 2026Article
- Does fast sintering affect the optical properties, fracture strength, and microstructure of monolithic zirconia?Odontology · 2026Article
- Optical, Structural, and Biological Characteristics of Rapid-Sintered Multichromatic Zirconia.Biomedicines · 2025Article
- Effects of various aging modes on the optical properties of zirconia with different yttria concentrations in coffee and tea.Journal of dental sciences · 2025Article
- Impact of deglazing on biaxial flexural strength of high translucent zirconia: effect of hydrothermal aging, pH-cycling, and load-cycling.BMC oral health · 2025Article
- Two-step sintering suppresses grain growth and improves flexural strength of dental zirconia.Dental materials : official publication of the Academy of Dental Materials · 2025Article
- Optical and Mechanical Properties of the Multi-Transition Zones of a Translucent Zirconia.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2025Article
- In Vitro Evaluation of Speed Sintering and Glazing Effects on the Flexural Strength and Microstructure of Highly Translucent Multilayered 5 mol% Yttria-Stabilized Zirconia.Materials (Basel, Switzerland) · 2024Article
- Recent advances in dental zirconia: 15 years of material and processing evolution.Dental materials : official publication of the Academy of Dental Materials · 2024Review
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5 authors.
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Abstract
objectivesTo investigate the impacts of speed and high-speed sintering on the densification, microstructure, phase composition, translucency, and flexural strength of yttria-stabilized zirconia (YSZ).
methodsA total of 162 disc-shaped specimens (n = 18) were cold-isostatically pressed from 3YSZ (Zpex), 4YSZ (Zpex 4), and 5YSZ (Zpex Smile) powders (Tosoh Corporation) and sintered according to the following protocols: conventional (control, ∼12 h), speed (∼28 min for 3YSZ; ∼60 min for 4YSZ and 5YSZ), and high-speed (∼18 min) sintering. Dimensions of zirconia specimens after sintering and polishing (1-μm diamond grit finish) were Ø13.75 × 1 mm. Density, microstructure, phase content, translucency parameter, and biaxial flexural strength were evaluated using Archimedes', SEM, XRD, spectrophotometric, and piston-on-3-ball methods, respectively. Data were analyzed with either one-way ANOVA and Tukey's test or Kruskal-Wallis with Dunn's test (α = 0.05).
resultsFor all YSZ compositions, conventional sintering yielded the highest density followed by speed then high-speed sintering. All sintering protocols resulted in similar strength values; however, speed and high-speed sintering protocols afforded significantly lower translucency relative to conventional sintering. XRD analysis revealed similar spectra for YSZs sintered by various protocols. The speed sintered specimens had the smallest grain size whereas the high-speed sintered 5YSZ possessed the largest grain size among all groups. SEM examination of all YSZ compositions revealed that the average pore size was an order of magnitude smaller than the average grain size. SIGNIFICANCE: Speed and high-speed sintering of YSZs yield similar strength but diminished density and translucency relative to their conventionally sintered counterparts.
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