Effect of artificial aging on optical properties and crystalline structure of high‐translucency zirconia

Hajhamid, Beshr; Bozec, Laurent; Tenenbaum, Howard C.; Souza, Grace M. De; Somogyi-Ganss, Eszter

doi:10.1111/jopr.13648

Cited by 3 publications

(1 citation statement)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unlike other ceramic materials, zirconia showed a slight increase in cell viability in the aged group compared to the control group. This was assumed to arise because the surface of zirconia was very smooth, with a very low R a value for surface roughness, even in the aged group, which may have led to a higher fibroblast survival rate [ 48 ]. In our study, Celtra Duo (Group C) exhibited a significantly lower cell viability than the other materials.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Thermocycling on the Physical Properties and Biocompatibilities of Various CAD/CAM Restorative Materials

et al. 2023

View full text Add to dashboard Cite

The purpose of this study is to evaluate the changes in physical properties and biocompatibilities caused by thermocycling of CAD/CAM restorative materials (lithium disilicate, zirconia reinforced lithium silicate, polymer-infiltrated ceramic network, resin nanoceramic, highly translucent zirconia). A total of 225 specimens were prepared (12.0 × 10.0 × 1.5 mm) and divided into three groups subjected to water storage at 37 °C for 24 h (control group), 10,000 cycles in distilled water at 5–55 °C (first aged group), and 22,000 cycles in distilled water at 5–55 °C (second aged group) [(n= 15, each]). The nanoindentation hardness and Young’s modulus (nanoindenter), surface roughness (atomic force microscopy (AFM)), surface texture (scanning electron microscopy (FE-SEM)), elemental concentration (energy dispersive spectroscopy (EDS)) and contact angle were evaluated. The morphology, proliferation and adhesion of cultured human gingival fibroblasts (HGFs) were analyzed. The data were analyzed using one-way ANOVA and Tukey’s test (p < 0.05). The results showed that the nanoindentation hardness and Young’s modulus were decreased after thermocycling aging. Cell viability and proliferation of the material decreased with aging except for the highly translucent zirconia. Zirconia-reinforced lithium silicate exhibited significantly lower cell viability compared to other materials. The surface roughnesses of all groups increased with aging. Cell viability and Cell adhesion were influenced by various factors, including the surface chemical composition, hydrophilicity, surface roughness, and topography.

show abstract

Section: Discussionmentioning

confidence: 99%

The Effects of Thermocycling on the Physical Properties and Biocompatibilities of Various CAD/CAM Restorative Materials

et al. 2023

View full text Add to dashboard Cite

show abstract

Zirconia: More and More Translucent

Hjerppe

Özcan

2023

Curr Oral Health Rep

View full text Add to dashboard Cite

Purpose of Review Yttria-stabilized zirconium dioxide, 3 mol% Y-TZP (zirconia, 3Y-TZP) was introduced as a prosthetic material to provide metal-free, tooth-colored, and durable material option for the patients. However, its optical properties are not ideal. This review describes the different strategies to increase translucency of zirconia material and summarizes the current knowledge of translucent zirconia for fixed prosthodontic applications. Recent Findings One of the most common ways of increasing the translucency of zirconia is to add the cubic phase by increasing Y2O3 content. Y2O3 4Y mol% and Y2O3 5Y mol% partially stabilized zirconia materials seem to have better optical properties compared to 3Y-TZP materials but with less favorable mechanical properties. Summary Despite the attempts to develop a translucent zirconia material, its optical properties are still far from those of natural tooth structures. Possible solution for achieving more translucent and durable zirconia material could be utilizing nanocrystalline zirconia. The production of nanocrystalline zirconia is yet very technique-sensitive, and the sintering process needs to be well controlled. Additional research in this field is needed before recommendation for clinical use. In the future, the challenge will be in achieving balance between improved translucency without sacrificing from mechanical properties. This would apply not only for subtractive but also additively manufactured zirconia ceramics.

show abstract

Analysis of zirconia mechanical properties after application of a protocol to simulate clinical aging

Hajhamid

Bozec

Tenenbaum

et al. 2023

Ceramics International

View full text Add to dashboard Cite

Effect of artificial aging on optical properties and crystalline structure of high‐translucency zirconia

Cited by 3 publications

References 51 publications

The Effects of Thermocycling on the Physical Properties and Biocompatibilities of Various CAD/CAM Restorative Materials

The Effects of Thermocycling on the Physical Properties and Biocompatibilities of Various CAD/CAM Restorative Materials

Zirconia: More and More Translucent

Analysis of zirconia mechanical properties after application of a protocol to simulate clinical aging

Contact Info

Product

Resources

About