Shade Correspondence, Color, and Translucency Differences between Human Dentine and a CAD/CAM Hybrid Ceramic System

Pop-Ciutrila, Ioana-Sofia; Dudea, Diana; Badea, Mândra; Moldovan, Mărioara; Cimpean, Sanda Ileana; Ghinea, Razvan

doi:10.1111/jerd.12195

Cited by 43 publications

(35 citation statements)

References 49 publications

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“…However, this situation also results in increased opacity. As a general rule, the relationship between strength and esthetics is inversely proportional . In the present study, the reason why VITA Enamic has a lower translucency than other resin–ceramic hybrid materials might be related to its Al 2 O 3 content (approximately 23% by weight).…”

Section: Discussionmentioning

confidence: 55%

“…As a general rule, the relationship between strength and esthetics is inversely proportional. 27,46 In the present study, the reason why VITA Enamic has a lower translucency than other resin-ceramic hybrid materials might be related to its Al 2 O 3 con- 27 also evaluated the translucency properties of Cerec CAD-CAM materials; VITA Mark II presented with more translucency than IPS e. max CAD at both 0.5 and 1.0-mm thicknesses. Similar results were observed in the present study where the translucency of IPS e.max CAD was significantly lower than that of VITA Mark II, confirming that the amount of crystallin affects translucency.…”

Section: Discussionmentioning

confidence: 67%

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Optical properties of contemporary monolithic CAD‐CAM restorative materials at different thicknesses

Gunal

Ulusoy

2018

J Esthet Restor Dent

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Section: Discussionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 67%

Optical properties of contemporary monolithic CAD‐CAM restorative materials at different thicknesses

Gunal

Ulusoy

2018

J Esthet Restor Dent

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“…Also, to complete the 14‐day of treatment period with at‐home bleaching agents, the specimens were left in distilled water more than in the in‐office bleaching agents, which may increase water sorption. It has been demonstrated that water sorption can lead to softening of the matrix, the release of unreacted monomers, and the degradation as well as leaching of filler particles . Taking these reports into consideration, the higher translucency differences after using at‐home bleaching agents may be attributed to changes of the refractive indices due to the water molecules absorbed by the materials.…”

Section: Discussionmentioning

confidence: 99%

Changes in Optical Characteristics and Surface Topography of CAD/CAM Materials after Bleaching Applications: An AFM Evaluation

Karakaya¹,

Cengiz

2019

Journal of Prosthodontics

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Purpose To evaluate the effect of in‐office and at‐home bleaching agents on color changes (ΔE00), translucency (TP00), whiteness (WID), surface roughness (Ra), and surface topography (Rsk and Rku) of a resin nano‐ceramic and a polymer‐infiltrated ceramic network CAD/CAM material. Materials and Methods Sixty specimens (6 mm × 7 mm × 1.3 mm) were prepared from Lava Ultimate (LU) and Vita Enamic (VE). The specimens were divided into 6 groups according to the bleaching agents applied (n = 10/group): control, Perfect Bleach Office + (PBO), Opalescence Boost (OB), Perfect Bleach (PB) with 10% and 16% carbamide peroxide and Whiteness Perfect (WP). ΔE00 values were calculated before and after bleaching procedures with a spectrophotometer using the CIEDE2000 formula. ΔTP00 and ΔWID values were calculated for each material. Ra, Rsk, and Rku values of the specimens were evaluated with an Atomic Force Microscope. Two‐way ANOVA was used for statistical analyses of the parameters measured after bleaching. For pairwise comparisons, Tukey test was performed. Results For LU, no statistically significant difference among the ΔE00 values of the groups was observed (p = 1.000). For VE, only WP group presented significantly higher values (2.12 ± 2.66) than the other groups (p < 0.001). For both materials; ΔTP00 values of at‐home bleaching groups were significantly higher than in‐office bleaching groups and control group (p < 0.001). For VE, ΔWID values did not demonstrate statistically significant difference (p = 1.000); however, for LU, PBO applied group showed statistically higher ΔWID values (3.00 ± 2.38) (p = 0.010) and WP applied group showed lower ΔWID values (0.47 ± 0.31) than the other groups (p = 0.030). For both LU and VE, there was no statistically significant difference among the groups regarding Ra (F = 4.544), Rsk (F = 2.369), and Rku values (F = 2.391) (p = 1.000). All of the VE groups presented Ra values higher than 0.2 µm. Conclusions The optical properties of LU and VE after bleaching applications were affected by the contact time with bleaching agents rather than concentration. Bleaching procedure had no effect on the surface properties of these materials.

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“…This newly introduced formula could have provided a higher degree of fit for both color difference perceptibility and acceptability. 53,54 …”

Section: Discussionmentioning

confidence: 99%

Relative Translucency of a Multilayered Ultratranslucent Zirconia Material

Shamseddine¹,

Majzoub²

2017

The Journal of Contemporary Dental Practice

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Aim:The aim of this study was to compare the translucency parameter (TP) of ultratranslucent multilayered (UTML) zirconia according to thickness and layer level. Materials and methods:Rectangles of UTML zirconia with four layers [dentin layer (DEL), first transitional layer (FTL), second transitional layer (STL), and enamel layer (ENL)] and four different thicknesses (0.4, 0.6, 0.8, and 1 mm) were milled from blanks. Digital images were taken in a dark studio against white and black backgrounds under simulated daylight illumination and international commission on illumination (CIE) Lab* color values recorded using Photoshop Creative Cloud software. The TP was computed and compared according to thickness and layer level using analysis of variance (ANOVA) followed by Bonferroni post hoc analysis for multiple comparisons. Significance was set at p < 0.05. Results:In each thickness, TP values were similar between any two layers. The significant effect of thickness on the TP was observed only in the first two layers. In the DEL, translucency was significantly greater at 0.4 mm than all other thicknesses. In the FTL, differences were significant between 0.4 and 0.8 mm and between 0.4 and 1 mm. Conclusion:The investigated zirconia does not seem to show gradational changes in relative translucency from dentin to enamel levels regardless of the thickness used. Thickness affected the TP only in the first two layers with better translucency at 0.4 mm.Clinical significance: Since relative translucency does not seem to be significantly different between layers, clinicians can modify the apicocoronal positioning of the UTML layers within the restoration according to the desired Chroma without any implications on the clinically perceived translucency. While the thickness of 0.4 mm may be suggested for anterior esthetic veneers because of its higher translucency, the other thicknesses of 0.6 to 1 mm can be used to mask colored abutments in full contour restorations.

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Shade Correspondence, Color, and Translucency Differences between Human Dentine and a CAD/CAM Hybrid Ceramic System

Abstract: The results of the present study could help clinicians in their decision of choosing a specific shade and translucency for their anterior or posterior esthetic restorations with hybrid ceramics. (J Esthet Restor Dent 28:S46-S55, 2016).

Cited by 43 publications

References 49 publications

Optical properties of contemporary monolithic CAD‐CAM restorative materials at different thicknesses

Optical properties of contemporary monolithic CAD‐CAM restorative materials at different thicknesses

Changes in Optical Characteristics and Surface Topography of CAD/CAM Materials after Bleaching Applications: An AFM Evaluation

Relative Translucency of a Multilayered Ultratranslucent Zirconia Material

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