Towards long lasting zirconia-based composites for dental implants. Part I: Innovative synthesis, microstructural characterization and in vitro stability

Palmero, Paola; Fornabaio, Marta; Montanaro, Laura; Reverón, Helen; Esnouf, C.; Chevalier, Jérôme

doi:10.1016/j.biomaterials.2015.01.018

Cited by 94 publications

(75 citation statements)

References 41 publications

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“…Consequently, the design of strong and tough materials is inevitably a matter of compromise. Therefore, over the last two decades, studies focused on strategies to obtain a better balance between strength and toughness in ceramic materials …”

Section: Where Are We?mentioning

confidence: 99%

“…This is the case of the most common zirconia ceramic, stabilized with Yttria ( Y‐TZP, for Yttria‐Tetragonal Zirconia Polycristal) . On the other hand, in the past and more recently, some Ceria‐doped zirconia ( Ce‐TZP )‐based ceramics and composites were shown to exhibit significant amount of transformation‐induced plasticity and almost no dispersion in strength data. Such materials could open new possibilities for applications where the limits of the failure properties of ceramics could be overcome, provided their mechanical behavior laws are well understood and described.…”

Section: Introductionmentioning

confidence: 99%

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Forty years after the promise of «ceramic steel?»: Zirconia‐based composites with a metal‐like mechanical behavior

et al. 2019

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Forty years ago, Garvie and his Australian co‐workers reported that the stress‐induced transformation of metastable tetragonal zirconia grains to the monoclinic symmetry could give rise to a powerful toughening mechanism. Their results even led them to consider zirconia systems as analogues of certain steels. This seminal paper generated extraordinary excitement in the ceramic community and it is still the subject of extensive research. Transformation toughening is widely used in zirconia materials and results in an increase in strength and toughness when compared to nontransformable ceramics, but the implementation into strong, tough, and sufficiently stable materials has not been fully reached. Zirconia ceramics generally fail at low strains with a much larger scatter in the strength values than metals and require statistical approaches to failure. Here we describe in detail the mechanical behavior laws of ceria‐doped zirconia composites exhibiting a high degree of stress‐induced transformation. They present, to some extent, mechanical behavior analogous to a metal, displaying, (a) significant amount of transformation‐induced plasticity without damage, (b) very high flaw tolerance and (c) almost no dispersion in strength data. They potentially open new application avenues in situations where the advantages of ceramics were dampened by their brittle failure behavior. In particular, the consequences of such behavior for dental implants and additive‐manufactured structures are highlighted.

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Section: Where Are We?mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Forty years after the promise of «ceramic steel?»: Zirconia‐based composites with a metal‐like mechanical behavior

et al. 2019

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“…Specifically, its mechanical performance is superior to that of Al 2 O 3 and its fracture toughness and ageing properties are better than those of conventional yttria-stabilized ZrO 2 (Y-TZP) [10][11][12][13][14][15]. As mentioned earlier, CeTZP per se has high fracture toughness; however, it presents low flexural strength [16]. This is where the dispersed Al 2 O 3 phase comes into play, as it supresses grain growth and increases the composite's strength, without affecting its fracture toughness [10,[17][18][19].…”

Section: Introductionmentioning

confidence: 94%

Osseous differentiation on freeze casted 10CeTZP-Al2O3 structures

Goyos‐Ball

Fernández

Dı́az

et al. 2017

Journal of the European Ceramic Society

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Three-dimensional structures with directionally oriented pore networks were fabricated from a 10 mol% ceria-stabilized zirconia and alumina composite (10CeTZP-Al 2 O 3 ) via freeze casting. Ceramic suspensions of different concentrations (30, 40 and 50 wt% solids) were frozen at various rates (2, 5 and 10°C/min) to obtain lamellar structures with aligned tubular pores of different characteristics: porosity (75-84%), pore dimensions (small diameter of the elliptical pores: 10-23 μm; large diameter of the elliptical pores: ~200 ± 70 µm), lamella thickness (2.7-4 μm) and compression strength (1-12 MPa). In vitro assays confirmed the non-cytotoxic nature of the samples. Furthermore, specific osseous differentiation genes were quantified after incubating osteoblasts on different cross sections of the samples during 7 days in supplemented culture medium; results demonstrated that the freeze casted structures induce up to nine times more osseous gene expression than tissue culture polystyrene (TCPS), an advanced surface used for optimized in vitro cell growth.

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“…1,2 Applying bioactive hydroxyapatite (HA) coating on the Ti surface, the bone bonding ability of the implant could be activated. [2][3][4][10][11][12][13][14][15][16][17] Pure ZrO 2 is allotropic and polymorphic at ambient temperature and pressure exhibiting three different crystallographic shapes cubic, tetragonal and monoclinic. Typically cracks, poor densication and lack of adhesion can be observed in such HA coating on metallic implant due to the thermal stress or irregular interparticle spacing problems.…”

Section: Introductionmentioning

confidence: 99%

“…7 Furthermore, the HA coating is not chemically inert to sustain in saliva and uoride containing corrosive oral environment. 4,17,24,25 Therefore, depositing cubic ZrO 2 as nanocoating on the surface of Ti could improve the anti-corrosion, anti-wear activities, biocompatibility and osseointegrativity of the dental implants as well as minimize inammatory response of the oral replacements. 8,9 It is noteworthy here that zirconia (ZrO 2 ) is one of the productive ceramic materials for biomedical applications because of its appearance, fracture toughness, chemical inertness, thermal stability and bone-bonding capability.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a cubic zirconia nanocoating on a titanium dental implant with excellent adhesion, hardness and biocompatibility

et al. 2016

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A crystalline cubic zirconia (ZrO 2 ) nanocoating was fabricated in situ on commercially pure titanium metal (cpTi) as a superior dental implant with enhanced biocompatibility. The crystallinity of the nanocoating was achieved at a moderately lower annealing temperature (350 C) in air using a simple sol-gel method applying a successive layer-by-layer dip-coating technique. Such a procedure facilitates the growth of cubic phase zirconia without noticeable deterioration of the metallic Ti. The bioactivity and biocompatibility of this ZrO 2 coated cpTi (Z-cpTi) were assessed in terms of apatite precipitation through immersion in simulated body fluid, and cell proliferation, respectively for several periods of time. The newly designed Z-cpTi showed unique apatite forming ability, better biocompatibility and tissue attachment properties, and is expected to reduce inflammatory response compared to the bare Ti implants. Moreover, the chemical inertness, corrosion and wear resistant properties, high strength, and appearance of this ZrO 2 nanocoating suggest the probable expediency of Z-cpTi as an advanced oral implant for long-standing performance. † Electronic supplementary information (ESI) available: GIXRD patterns of dried and heat-treated 3L-ZrO 2 coating on glass (Fig. S1), TEM with SAED pattern of the dried ZrO 2 coating material (Fig. S2). See

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Towards long lasting zirconia-based composites for dental implants. Part I: Innovative synthesis, microstructural characterization and in vitro stability

Cited by 94 publications

References 41 publications

Forty years after the promise of «ceramic steel?»: Zirconia‐based composites with a metal‐like mechanical behavior

Forty years after the promise of «ceramic steel?»: Zirconia‐based composites with a metal‐like mechanical behavior

Osseous differentiation on freeze casted 10CeTZP-Al2O3 structures

Fabrication of a cubic zirconia nanocoating on a titanium dental implant with excellent adhesion, hardness and biocompatibility

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