Color stability of CAD/CAM Zirconia ceramics 
following exposure to acidic and staining drinks

Colombo, Marco; Cavallo, Marco; Miegge, Matteo; Dagna, Alberto; Beltrami, Riccardo; Chiesa, Marco; Poggio, Claudio

doi:10.4317/jced.54404

Cited by 25 publications

(52 citation statements)

References 23 publications

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“…This could be explained by the acid-resistant property of zirconia ceramics, which could have shown less vulnerability for discoloration. Similar to the outcome of the present study, Colombo et al also observed clinically acceptable color values with zirconia specimens following one week of storage in a Coca-Cola beverage [15]. Furthermore, in a study by Derafshi et al, it was found that zirconia specimens stored in mouth rinses exhibited clinically acceptable ΔE values [17].…”

Section: Discussionsupporting

confidence: 90%

“…Following the 28-day study period, GB specimens stored in the coffee solution showed marked changes compared to other specimens. Similarly, for zirconia specimens immersed in the coffee solution in previous studies, higher than clinically acceptable values were reported [15][16].…”

Section: Discussionmentioning

confidence: 62%

“…The current study evaluated the effect of grit-blasting on the color stability of zirconia ceramics following exposure to common beverages. Although previous studies have evaluated the color stability of zirconia ceramics, this is the first attempt to study the effect of grit blasting on the color stability of zirconia [15][16][17][18]. This was important because the acid-resistant polycrystalline structure of zirconia is resistant to etching and results in weak bonding to resin composites [4].…”

Section: Discussionmentioning

confidence: 99%

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Effect of Grit-blasting on the Color Stability of Zirconia Ceramics Following Exposure to Beverages

Alaqeel¹

2020

Cureus

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The aim of this study was to evaluate the effect of grit-blasting on the color stability of zirconia ceramics following exposure to beverages. Method A total of 80 planar zirconia specimens were prepared from dense sintered zirconium blocks and were randomly allocated into four groups (n=20). Ten specimens from each group were gritblasted (GB) using aluminum trioxide powder from a distance of 10 mm. The remaining 10 specimens were used as such without grit-blasting (NGB). The grit-blasted and non-grit-blasted specimens were immersed in artificial saliva, Coffee, Red Bull, and Coca-Cola at room temperature over a 28-day test period. Color measurement (ΔE) of the zirconia specimens was performed at baseline (T0) and after seven (T1), 14 (T2), and 28 (T3) days of immersion in the beverages using the Color Eye 7000A Spectrophotometer (Gretag Macbeth, New Windsor, NY). The data were analyzed using analysis of variance (ANOVA) and the post-hoc Bonferroni test. A p-value of less than 0.05 was considered statistically significant. Result The GB specimens immersed in coffee showed the highest color changes as compared to other groups (4.47 ± 0.04) and the NGB specimens stored in saliva showed the lowest ΔE values (0.83 ± 0.03). Energy drinks and soft drinks showed similar ΔE values at the end of the 28-day study period in both the NGB and GB groups. All the specimens, irrespective of the beverages, in both groups showed increased ΔE values at different immersion periods except for NGB specimens immersed in saliva, which showed decreased ΔE values from T2 to T3. Conclusion GB specimens showed increased ΔEs compared to NGB Zirconia ceramics. Among the beverages, the coffee immersion of GB specimens showed marked color changes. The specimens immersed in the energy and acidic drinks from both groups showed perceivable color changes at the end of the 28-day study period.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 62%

Section: Discussionmentioning

confidence: 99%

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Effect of Grit-blasting on the Color Stability of Zirconia Ceramics Following Exposure to Beverages

Alaqeel¹

2020

Cureus

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“…For the interpretation of the clinical data, according to various articles, a ΔE value superior to 3.3 is visually appreciable by a nonskilled person, which means that the color change is unacceptable in the context of aligners worn for aesthetic reasons [25,26]. If the ΔE value is smaller than 1, it is considered clinically undetectable (values between 1 and 3.3 are deemed clinically acceptable) [25,26].…”

Section: Discussionmentioning

confidence: 99%

Colorimetric and spectrophotometric measurements of orthodontic thermoplastic aligners exposed to various staining sources and cleaning methods

et al. 2020

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Background: Manufacturers of orthodontic aligners suggest that users remove appliances every time they consume solid foods or any drink (except water). This is to avoid a color change within the clear thermoplastic material of which they are made. However, limited quantitative evidence exists to guide users and practitioners in this regard. Herein, we evaluated the color stability of the polymer forming three different American brands of aligners and the stain-removal potential of two cleansers to provide such guidelines. Methods: The removable appliances (300 specimens, 100 per brand) were exposed to different staining agents common in a regular diet (coffee, black tea, red wine, cola) or to a control solution in vitro over 12 h or 7 days. The three brands evaluated were Invisalign®, ClearCorrect® and Minor Tooth Movement®. These were then cleaned by using either Invisalign® cleaning crystals or the Cordless Sonic Cleaner combined with a Retainer Brite® tablet. The CIELAB color space approach was used to compare color changes (ΔE) in aligners before immersion (T0), after a 12h exposure (T1), after a 7-day exposure (T2) and after cleaning (T3). Statistical methods (Levene's test, ANOVA, Brunner-Langer model, Tukey's range test and t-test) were used to identify interactions between the brands themselves or between the brands and the cleaning methods. Statistical analyses were performed at the .05 significance level. Results: A 12-h or 7-day exposure to instant coffee or red wine significantly colored the Invisalign® aligners compared to the two other brands. Black tea created an important extrinsic color change for all three brands after 7 days. Clinically, both cleaning methods showed a better efficacy in removing stains from black tea compared to other staining agents. Conclusions: The Invisalign® aligners were more prone to pigmentation than the ClearCorrect® or the Minor Tooth Movement® devices after an exposure to coffee or red wine. Black tea caused important stains on the surface of the three tested brands. Both cleansing methods performed similarly.

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“…These insults could affect the color stability of restorations in oral service due to repeated exposure over time. The overall success rate of these different restorations is measured in terms of mechanical and aesthetic stability over time 1,2 .…”

Section: Introductionmentioning

confidence: 99%

The color change of indirect zirconia containing restorative materials – A comparative in vitro study.

abdelrahman

Kamel

morsy

2021

Egyptian Dental Journal

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Aim: to evaluate the influence of immersion time in coffee staining solution on the color coordinates of two Zirconia-containing indirect aesthetic materials.Material and methods: 20 Discs were used in the current study; samples have been divided into two groups according to the material used (monolithic Zirconia restoration group (katana) and indirect Zirconia silicate filled composite restoration group [Ceramage]. The samples were prepared and then immersed in coffee [staining solution]. Spectrophotome tric analysis was made immediately after manufacturing of discs at (T0), at 7 days (T1), 14 days (T2) and at 21 days.Results: At T0-T1, T1-T2, T0-T2 and T0-T3, the mean ΔE of Zirconia showed statistically significantly lower value than Ceramage. At T2-T3; no statistically significant difference between mean ΔE of the two ceramic types was found (P-value = 0.155, Effect size = 0.235). Regardless of time; Zirconia showed a statistically significant lower mean ΔE than Ceramage after staining protocol. Conclusion:The ΔEs of tes ted CAD/CAM Zirconia ceramics is considered color stable in comparison to zirconia filled composite (Ceramage), and better resistant to external coffee staining.Color difference (ΔE) between different test specimens at different immersion or contact/time in coffee drinks showed clinically un acceptable range above 3.3 units). Thus, Zirconia filled lab composite is not aesthetically stable in color. Further studies are required to assess the color stability of different zirconia containing indirect restorative materials upon exposure to different oral conditions with aging inside the oral cavity.

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Color stability of CAD/CAM Zirconia ceramics following exposure to acidic and staining drinks

Cited by 25 publications

References 23 publications

Effect of Grit-blasting on the Color Stability of Zirconia Ceramics Following Exposure to Beverages

Effect of Grit-blasting on the Color Stability of Zirconia Ceramics Following Exposure to Beverages

Colorimetric and spectrophotometric measurements of orthodontic thermoplastic aligners exposed to various staining sources and cleaning methods

The color change of indirect zirconia containing restorative materials – A comparative in vitro study.

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