Survey of the mechanical and physical behaviors of yttria-stabilized zirconia from multiple dental laboratories

Liao, Yijun; Gruber, Max; Lukic, Henry; McLees, Jim; Chen, Si; Boghosian, Alan Ara; Megremis, Spiro

doi:10.1016/j.jfscie.2022.100018

Cited by 3 publications

(4 citation statements)

References 34 publications

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“…The specimens were then tested and evaluated for their mechanical, physical, and optical properties. 10 The outcome was quite interesting and confirming that there is a large discrepancy in strength and translucency based on yttria content. Moreover, dental laboratories DID NOT always adhere to the details requested in a prescription for zirconia.…”

Section: Zirconia Ceramics and Yttria Concentrationmentioning

confidence: 73%

“…In a recent study, zirconia specimens were ordered from 9 dental laboratories for posterior (high strength) and anterior (high translucency) clinical indications. The specimens were then tested and evaluated for their mechanical, physical, and optical properties 10 . The outcome was quite interesting and confirming that there is a large discrepancy in strength and translucency based on yttria content.…”

Section: Zirconia Ceramics and Yttria Concentrationmentioning

confidence: 78%

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Zirconia restoration types, properties, tooth preparation design, and bonding. A narrative review

Sulaiman,

Suliman,

Abdulmajeed

et al. 2023

J Esthet Restor Dent

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ObjectiveThe purpose of this review was to provide dental professionals with information regarding the various types of zirconia restorations, their mechanical and optical properties, tooth preparation design, and bonding protocol in an effort to enhance the longevity and durability of zirconia restorations.OverviewThe yttria content of zirconia ceramics determines their classification. The mechanical and optical properties of each type are discussed, with an emphasis on the effect of yttria concentration on the properties of zirconia. The processing and sintering methods are also discussed as they have a direct impact on the properties of zirconia. The design of tooth preparation, specifically occlusal reduction, varies depending on the type of zirconia used in each case. Finally, a protocol for zirconia restoration bonding is described to ensure optimal bonding to the tooth structure.ConclusionNot all zirconia restorations are the same. The selection of zirconia type based on yttria concentration, processing and sintering methods, tooth preparation design, and adherence to the bonding protocol are all critical to the success and longevity of zirconia restorations.Clinical SignificanceZirconia restorations are the most commonly used indirect restorative material. The selection of the most appropriate zirconia type based on its yttria content, which determines its strength and translucency, is critical to the success and the longevity of the restoration. Tooth preparation design also influences the strength and translucency of the zirconia. Air‐borne particle abrasion, followed by a ceramic primer and resin cement, can ensure a durable bond to the tooth structure.

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Section: Zirconia Ceramics and Yttria Concentrationmentioning

confidence: 73%

Section: Zirconia Ceramics and Yttria Concentrationmentioning

confidence: 78%

Zirconia restoration types, properties, tooth preparation design, and bonding. A narrative review

Sulaiman,

Suliman,

Abdulmajeed

et al. 2023

J Esthet Restor Dent

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“…Furthermore, the fracture toughness of 5Y-TZP is almost 50% less compared to that of 3Y-TZP with the cubic phase content because of more yttria content ( Belli et al, 2021 ). In a recent study, ( Liao et al, 2023 ) showed that the flexural strength value was 584 (158) MPa for 3Y-TZP and 373 (104) MPa for 5Y-TZP.…”

Section: Survey Methodologymentioning

confidence: 99%

“…5Y-TZP is more translucent by 20 to 25% but has less flexural strength by 40 to 50% compared to 3Y ( Ban, 2021 ). Hence, 3Y-TZP can be indicated for bridges, especially of long spans, and is not suitable for the anterior teeth ( Ban, 2021 ; Liao et al, 2023 ). Conversely, 5Y-TZP and M5Y are indicated for veneers and anterior crowns but are not suitable for long-span bridges ( Ban, 2021 ).…”

Section: Survey Methodologymentioning

confidence: 99%

Current classification of zirconia in dentistry: an updated review

Kongkiatkamon

Rokaya

Kengtanyakich

et al. 2023

PeerJ

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Zirconia, a crystalline oxide of zirconium, holds good mechanical, optical, and biological properties. The metal-free restorations, mostly consisting of all-ceramic/zirconia restorations, are becoming popular restorative materials in restorative and prosthetic dentistry choices for aesthetic and biological reasons. Dental zirconia has increased over the past years producing wide varieties of zirconia for prosthetic restorations in dentistry. At present, literature is lacking on the recent zirconia biomaterials in dentistry. Currently, no article has the latest information on the various zirconia biomaterials in dentistry. Hence, the aim of this article is to present an overview of recent dental zirconia biomaterials and tends to classify the recent zirconia biomaterials in dentistry. This article is useful for dentists, dental technicians, prosthodontists, academicians, and researchers in the field of dental zirconia.

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Flexural strength of novel glass infiltrated monochrome and multilayer high yttrium oxide containing zirconia upon various sintered cooling rates

Uasuwan,

Juntavee,

Juntavee

2024

Journal of Prosthodontics

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PurposeThe sintering technique and cooling strategy influence the strength of zirconia. This study examined the impact of altering the cooling rate of glass‐infiltrated monolayer and multilayer 5 mol% yttria‐partially stabilized zirconia (5Y‐PSZ) on their strength.Materials and MethodsOne‐hundred eighty (180) specimens (width × length × thickness = 10 × 20 × 2 mm) were prepared using monolayer (Mo: Cercon‐xt) and multilayer (Mu: Cercon‐xt ML) 5Y‐PSZ. Randomly distributed specimens (n = 15/group) were sintered with traditional (T) versus glass infiltrated (G) technique and cooled down with different cooling rates: slow (S: 5°C/min), normal (N: 35°C/min), and fast (F: 70°C/min). Four‐point bending test was used to measure flexural strength (σ). Microstructures were investigated by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and X‐ray diffraction (XRD). Three‐way ANOVA and Tamhane comparisons were determined for a significant difference of σ (p < 0.05). Weibull analysis was determined for Weibull modulus (m).ResultsThe highest σ (MPa) was seen for GMuS (696.8 ± 69.8). Mo‐PSZ and Mu‐PSZ showed no significant difference in σ. G‐sintering presented significantly higher σ (659.9 ± 79.3) than T‐sintering (426.0 ± 63.7). S‐cooling (560.9 ± 126.1) had the highest σ. The highest m‐value was observed in GMuN (12.1 ± 3.8). A significant difference in σ was indicated due to cooling rates and sintering techniques (p < 0.05).ConclusionsGlass infiltration significantly enhanced strength through elastic gradience. F‐cooling reduced grain size, impaired grain boundary integration, and increased the tetragonal to monoclinic phase transition, significantly decreasing flexural strength in traditional sintering. Nevertheless, F‐cooling was recommended for glass‐infiltrated 5Y‐PSZ to enhance strength while reducing processing time.

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Survey of the mechanical and physical behaviors of yttria-stabilized zirconia from multiple dental laboratories

Cited by 3 publications

References 34 publications

Zirconia restoration types, properties, tooth preparation design, and bonding. A narrative review

Zirconia restoration types, properties, tooth preparation design, and bonding. A narrative review

Current classification of zirconia in dentistry: an updated review

Flexural strength of novel glass infiltrated monochrome and multilayer high yttrium oxide containing zirconia upon various sintered cooling rates

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