Relative Translucency of a Multilayered Ultratranslucent Zirconia Material

Shamseddine, Loubna; Majzoub, Zeina

doi:10.5005/jp-journals-10024-2183

Cited by 14 publications

(14 citation statements)

References 48 publications

(62 reference statements)

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“…A few studies have investigated the optical properties of monolithic zirconia and especially its TP and CR but the results are very inhomogeneous due to variations in instrumentation, zirconia brand, the thickness of the specimens and parameters evaluated (Table S1 and Table 1) [45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69]. For a comprehensive evaluation of the commercial products included in the following tables, their brand names and respective composition as reported by manufacturers or presented in associated references are presented in Table 1, at the end of the paper.…”

Section: Optical Propertiesmentioning

confidence: 99%

“…The effect of hydrothermal treatment of translucent monolithic zirconia on the light transmission was investigated only in a few studies [49,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67]. A statistically significant decrease or an increase of Tt% over aging time was recorded by Putra et al [49] dependent on the commercial product.…”

Section: Optical Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Monolithic Zirconia: An Update to Current Knowledge. Optical Properties, Wear, and Clinical Performance

Rigos²,

et al. 2019

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The purpose of this paper was to update the knowledge concerning the wear, translucency, as well as clinical performance of monolithic zirconia ceramics, aiming at highlighting their advantages and weaknesses through data presented in recent literature. New ultra-translucent and multicolor monolithic zirconia ceramics present considerably improved aesthetics and translucency, which, according to the literature reviewed, is similar to those of the more translucent lithium disilicate ceramics. A profound advantage is their high strength at thin geometries preserving their mechanical integrity. Based on the reviewed articles, monolithic zirconia ceramics cause minimal wear of antagonists, especially if appropriately polished, although no evidence still exists regarding the ultra-translucent compositions. Concerning the survival of monolithic zirconia restorations, the present review demonstrates the findings of the existing short-term studies, which reveal promising results after evaluating their performance for up to 5 or 7 years. Although a significant increase in translucency has been achieved, new translucent monolithic zirconia ceramics have to be further evaluated both in vitro and in vivo for their long-term potential to preserve their outstanding properties. Due to limited studies evaluating the wear properties of ultra-translucent material, no sound conclusions can be made, whereas well-designed clinical studies are urgently needed to enlighten issues of prognosis and long-term survival.

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Section: Optical Propertiesmentioning

confidence: 99%

Section: Optical Propertiesmentioning

confidence: 99%

Monolithic Zirconia: An Update to Current Knowledge. Optical Properties, Wear, and Clinical Performance

Rigos²,

et al. 2019

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“…The translucency of different layers of 5Y-ZP showed no significant difference in the previous studies, 21,22 but the studies measured the TP to evaluate translucency. However, the translucency was significantly different between layers based on T t %.…”

Section: Discussionmentioning

confidence: 64%

“…It is important to find out the difference of layers in 5Y-ZP but few studies have compared flexural strength and translucency between layers of 5Y-ZP. 21,22 Despite the shade of 5Y-ZP matches the classical shade guide, additional external staining is essential because the shade of natural teeth is variable. The manufacturers recommend firing under 900°C, but the effect of additional firing on 5Y-ZP is unclear.…”

Section: Introductionmentioning

confidence: 99%

The comparisons of layers and the effect of additional firings on flexural strength and translucency of 5Y-ZP

Kim

Shin

2021

J Dent Rehabil Appl Sci

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Purpose:The purpose of this in vitro study was to investigate the flexural strength and translucency of three layers in 5Y-ZP and to assess the effect of additional firings on these properties. Materials and Methods: Sintered zirconia blocks were sectioned according to three layers : incisal, transition, and body. Disc-shaped specimens were fabricated from each layer. The diameter of specimens was 15.0 mm and each thickness of specimens for biaxial flexural strength test and translucency was 1.2 mm and 1.0 mm. The specimens were classified into subgroups according to the number of firing (0, 1, and 3 times; n = 10/subgroup) and the additional firings were performed under 900°C using a furnace. Biaxial flexural strength and translucency was measured using universal testing machine and uv-vis spectrophotometer. X-ray diffraction (XRD) analysis was used for measurement of the phase identification. Oneway ANOVA, Tukey HSD test were performed (α = 0.05). Results: There was no significant difference in flexural strength between the three layers (P > 0.05), while there was significant difference in translucency between different layers (P < 0.05). The flexural strength of incisal and transition layer was decreased by the single additional firing, and the three additional firings significantly decreased the flexural strength of three layers. The translucency of layer was decreased by additional firings except the body layer. The XRD patterns of all groups were similar. Conclusion: Three layers of 5Y-ZP were different only in translucency. Additional firings affected the flexural strength and translucency differently depending on the layers but crystalline phases were not changed.

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“…However, the highest ΔE was related to incisal regions (1.58); this might be due to the presence of lower dye components in the incisal layer and different degrees of translucency across the layers. 32 Ueda et al revealed that different layers of UTML disc have different transmittance values. 33…”

Section: Discussionmentioning

confidence: 99%

Color agreement between try-in paste and resin cement: Effect of thickness and regions of ultra-translucent multilayered zirconia veneers

Daneshpooy

Azar

Oskoee

et al. 2019

J Dent Res Dent Clin Dent Prospects

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Background. The current study aimed at identifying the color agreement between try-in pastes and the respective resin cements and investigated the effect of thickness and regions of Ultra-Translucent Multilayered Zirconia Veneers. Methods. A total of 90 cubic zirconia discs were prepared at two different thicknesses (0.5 mm and 0.7 mm) (n=45) in five groups in terms of the shade of the try-in paste and resin cement as follows: Universal, Clear, Brown, White and Opaque. Try-in paste and the respective resin cement were applied between the specimens and composite substrate, respectively, and colorimetric evaluation was carried out using CIE-Lab system. For each specimen, ΔE between the try-in paste and cement was calculated. Data were analyzed with SPSS 17 using Multifactor ANOVA (P<0.05). Results. Multifactor ANOVA results showed that ΔE values were significantly affected by the resin cement shade and the thickness of ceramic veneer (P<0.05). The results showed better shade agreement between the try-in paste and the respective resin cement with thicker ceramic veneers. The results of Tukey HSD revealed that ΔE values for the Clear, Universal and Brown shades were less than those of the White and Opaque shades. Lighter shades exhibited better agreement between the try-in paste and the respective resin cement. Conclusion. Perceptible color difference was found between the try-in pastes and the respective resin cement in most colors investigated. Although, the agreement of the try-in pastes and the respective resin cement was affected by the thickness of zirconia veneers, the different regions of multilayered ultra-translucent zirconia ceramic showed no significant effect.

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Relative Translucency of a Multilayered Ultratranslucent Zirconia Material

Cited by 14 publications

References 48 publications

Monolithic Zirconia: An Update to Current Knowledge. Optical Properties, Wear, and Clinical Performance

Monolithic Zirconia: An Update to Current Knowledge. Optical Properties, Wear, and Clinical Performance

The comparisons of layers and the effect of additional firings on flexural strength and translucency of 5Y-ZP

Color agreement between try-in paste and resin cement: Effect of thickness and regions of ultra-translucent multilayered zirconia veneers

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