Effect of hydrothermal aging on the properties of zirconia with different levels of translucency

Amarante, José Eduardo Vasconcellos; Pereira, M. V.; Souza, Grace M. De; Alves, Manuel Fellipe Rodrigues Pais; Simba, Bruno Galvão; Santos, Claudinei dos

doi:10.1016/j.jmbbm.2020.103847

Cited by 18 publications

(10 citation statements)

References 36 publications

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“…The ZrTrans group had 36% of the untransformed tetragonal phase. A similar was observed by Amarante et al [ 21 ], although in the present work a different hydrothermal degradation test procedure was adopted. Amarante et al [ 21 ] used the autoclave immersion recommended by the ISO 13356 standard (5 h, 134°C, 2 bar, and deionized water).…”

Section: Resultssupporting

confidence: 74%

“…A similar was observed by Amarante et al [ 21 ], although in the present work a different hydrothermal degradation test procedure was adopted. Amarante et al [ 21 ] used the autoclave immersion recommended by the ISO 13356 standard (5 h, 134°C, 2 bar, and deionized water). The result of the present work shows that increasing the degradation time, as well as changing the immersion liquid, did not influence the ZrTrans phase transformations of zirconia.…”

Section: Resultssupporting

confidence: 74%

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Physical Properties and Color Stainability by Coffee and Red Wine of Opaque and High Translucency Zirconia Dental Ceramics after Hydrothermal Degradation

Oliveira

Elias

Santos

et al. 2022

International Journal of Biomaterials

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The objective was to evaluate the bending strength, phase transformation, roughness, and color stainability by coffee and red wine of opaque and high translucency yttria-stabilized zirconia before and after hydrothermal degradation in saline solution or oral mouthwash. Presintered zirconia blocks with medium opacity (ZrO2-3 mol. % of Y2O3) designed as ZrOp and high translucency zirconia (5.2 mol. % of Y2O3) designed as ZrTrans were used. Specimens (n = 80/group) were cut and sintered at 1500°C for 2 h. The specimens were hydrothermally degraded in an autoclave (134°C–1.8 kg/cm2) for 20 h in saline solution (0.5 g/L) and oral mouthwash solution (0.02% sodium fluoride, without alcohol and with 21.6% alcohol). After hydrothermal degradation, the samples were immersed in containers with coffee or red wine for 14 days to determine their color stainability. The results showed that the ZrOp had a higher bending strength than the ZrTrans before and after hydrothermal aging. In ZrOp and ZrTrans, the roughness increased after hydrothermal degradation. ZrOp samples had a higher Ra roughness than the ZrTrans samples. Roughness did not change after immersion in coffee or red wine. The X-ray diffraction (XRD) results showed that ZrOp samples underwent a tetragonal to monoclinic phase transformation, while ZrTrans samples were unchanged. Both ZrOp and ZrTrans samples changed color after immersion in coffee and red wine.

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Section: Resultssupporting

confidence: 74%

Section: Resultssupporting

confidence: 74%

Physical Properties and Color Stainability by Coffee and Red Wine of Opaque and High Translucency Zirconia Dental Ceramics after Hydrothermal Degradation

Oliveira

Elias

Santos

et al. 2022

International Journal of Biomaterials

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“…The least observed change in translucency was found in Katana zirconia . Additionally, cubic zirconia has been reported to be a stable phase, resistant to hydrothermal aging 7 , 8 .…”

Section: Discussionmentioning

confidence: 99%

Effect of ceramic and resin cement type on color stability and translucency of ceramic laminate veneers for diastema closure: an in vitro study

Elkhishen

Al-Zordk

Hassouna

et al. 2022

Sci Rep

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To investigate the effect of resin cements on the color stability and translucency of ceramic laminate veneers used for diastema closure. Sixty resin abutments were prepared for ceramic laminate veneers and divided into six groups according to the ceramic type (lithium disilicate, zirconia-reinforced lithium silicate, and translucent zirconia) and the cement type (Variolink Esthetic LC and RelyX Veneer). Color coordinates and translucency were analyzed after cementation and after soaking in the coffee solution. Differences in color and translucency were estimated, and results were statistically assessed (α = 0.05). Ceramic materials showed a significant impact on color changes after soaking in coffee within Variolink Esthetic groups. Translucent zirconia showed the highest color change, followed by zirconia reinforced lithium silicate and lithium disilicate. Ceramic materials showed a significant impact among the RelyX Veneer groups. A significant interaction in color changes was found between ceramic types and cement types after cementation, and after soaking in coffee was found. All groups showed a clinically acceptable difference in translucency parameters after soaking in coffee. The resin cement affects the color and translucency of ceramic laminate veneers used for diastema closure, and ceramic laminate veneers bonded with Variolink Esthetic LC resin cement are more translucent, while ceramic laminate veneers bonded with RelyX Veneer resin are more resistant to coffee staining. The lithium disilicate laminate veneer is more resistant to coffee staining than zirconia reinforced lithium silicate and translucent zirconia laminate veneers used for diastema closure.

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“…Cubic zirconia has been reported to be a stable phase and resistant to hydrothermal aging. 7,8 Both resin cements in this study contain TEGDMA and Bis-GMA monomers with chemical structure susceptible to hydrolysis and/or hydrogen bridging with water. 24 Hydrolytic degradation and hygroscopic effects are determinants of color changes in resin based materials.…”

Section: Discussionmentioning

confidence: 99%

“…6 Various ceramic systems such as lithium disilicate, lithium disilicate derivatives, and zirconium oxide ceramics have been introduced to the dental market. [7][8][9][10] The unique microstructure of lithium disilicate ceramics plays a key role in its mechanical and optical properties. [11][12][13][14] Ceramic laminate veneers, if properly bonded, become an integral part of tooth structure and share a portion of the applied load during chewing cycles.…”

Section: Introductionmentioning

confidence: 99%

Color stability and translucency of ceramic laminate veneer restoration for diastema closure: Effect of laminate veneering materials and resin cements

Adel

Al-Zordk

Hassouna

et al. 2022

Preprint

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Objective To investigate the effect of resin cements on color stability and translucency of ceramic laminate veneer materials used for diastema closure. Materials and Methods Sixty resin abutments were prepared for ceramic veneers and divided into six groups according to the ceramic type (lithium disilicate, zirconia reinforced lithium silicate, and translucent zirconia) and cement type (Variolink Esthetic LC and RelyX Veneer). The color coordinates and translucency were analyzed after cementation and after immersion in coffee solution. The differences in color and translucency were estimated, and the results were statistically assessed (α = .05). Results Ceramic materials showed a significant impact on the color changes after coffee immersion within Variolink Esthetic groups. Zirconia showed the highest color change, followed by zirconia reinforced lithium silicate and lithium disilicate. The ceramic materials showed a significant impact among the RelyX Veneer groups. A significant interaction in color changes between ceramic type and cement type after cementation, and after coffee immersion were found. All groups showed a clinically acceptable difference in translucency parameters after coffee immersion. Conclusions Cement selection is important for the color stability and translucency of ceramic laminate veneers after coffee immersion. Lithium disilicate veneer is more resistant to coffee staining than zirconia reinforced lithium silicate and zirconia veneers. Ceramic laminate veneers cemented with resin cement contain benzoyl germanium compounds (Variolink Esthetic) are more translucency. However, ceramic laminate veneers cemented using resin cement contain iodonium salts (RelyX Veneer) are more resistant to coffee immersion.

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Effect of hydrothermal aging on the properties of zirconia with different levels of translucency

Cited by 18 publications

References 36 publications

Physical Properties and Color Stainability by Coffee and Red Wine of Opaque and High Translucency Zirconia Dental Ceramics after Hydrothermal Degradation

Physical Properties and Color Stainability by Coffee and Red Wine of Opaque and High Translucency Zirconia Dental Ceramics after Hydrothermal Degradation

Effect of ceramic and resin cement type on color stability and translucency of ceramic laminate veneers for diastema closure: an in vitro study

Color stability and translucency of ceramic laminate veneer restoration for diastema closure: Effect of laminate veneering materials and resin cements

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