Effect of Thermocycle Aging on Color Stability of Monolithic Zirconia

Albayrak, Berkman; Gül, Pınar; Bayındır, Funda

doi:10.4236/ojst.2019.93008

Cited by 8 publications

(9 citation statements)

References 33 publications

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“…Overall, the values of TP ranged from 18.82 and 14.20 for zirconia at TP (T1) and for Mark II at T3, respectively; these values coincided with those publications recorded for the materials used for inlays and veneer ceramic materials [17][18][19][22][23]. The ΔE 00 values at different time intervals were within the clinically acceptable range reported by previous studies [17][18]22,24].…”

Section: Discussionsupporting

confidence: 87%

“…Those values can be considered acceptable because many recent and previous studies have reported the same values [18,[22][23]. Other works have recorded TP values of 15.00-22.00 for zirconia samples and 13.00-18.00 for feldspathic ceramic CAD/CAM materials after 2 weeks of immersion in khat extract [19]. The reduction in TP values coincided with that reported by Şişmanoğlu and Gürcan 2021, who tested the TP of feldspathic ceramic after immersion in coffee for a period of time and found a slight reduction in the TP values of zirconia samples and feldspathic CAD/CAM ceramic materials after staining [26].…”

Section: Discussionmentioning

confidence: 64%

“…These values were within the ranges of values obtained in the current study. Koseoglu et al 2019 obtained TP values of between 14.00 and 17.00, which significantly differed between time intervals, for zirconia CAD/CAM prosthetic materials after immersion [17].…”

Section: Discussionmentioning

confidence: 90%

“…where subscript B refers to the color coordinates against the B background and subscript W refers to those against the W background [17][18][19]. ΔE 00 is the color difference calculated on the basis of the color coordinate differences between two objects or between a restoration and a tooth/target.…”

Section: Color Measurementsmentioning

confidence: 99%

“…where ΔL* = L*0 − L*1, Δa* = a*0 − a*1, and Δb* = b*0 − b*0 for time intervals. Three readings for ΔE 00 values were obtained, namely, T1 ΔE 00 , T2 ΔE 00 , and T3 ΔE 00 [19][20][21]. In addition, the shade of the specimens was measured at three-time points by using the VitaPAN classical shade guide: as the baseline before immersion, as the first reading after 15 days of immersion, and as the second reading after 30 days of immersion.…”

Section: Application Of Staining Solutionsmentioning

confidence: 99%

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Color Changes of Ceramic Materials Used for Inlay and Veneers Restorations after Staining with Different Time Intervals

Moaleem

Alamoudi²,

Aldhahri³

et al. 2021

JPRI

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Background: Stain color of CAD/CAM prosthetic materials is important for the long-term of these materials without affecting daily beverage consumption habits. Aims: To assess the influence of aging with Coca-Cola drinks on the color of the CAD/CAM materials used for inlay and veneer restoration over different time intervals. Methods: 48 specimens were fabricated from Vitablocs Mark II and zirconia CAD/CAM ceramic materials. Each group comprised 24 specimens with eight samples for every background (white [W], black [B], and gray). Baseline readings were taken by a spectrophotometer before staining (Baseline T0). After Coca-Cola staining and aging, the color measurement was repeated after 15 and 30 days (T1 and T2), while T3 was the difference between T2-T0. The data were analyzed with descriptive statistics, one-way ANOVA, and post hoc tests. Results: The ΔE00 color parameters of Mark II and zirconia materials were higher against the W background than other backgrounds. However, the zirconia materials recorded higher values than Mark II for the same parameters (L, a, and b) against the gray background during 15 and 30 days of immersion in Coca-Cola. Translucency parameters (TP) exhibited significant differences between ceramic types and immersion periods, with the TP values of zirconia being slightly higher than those of Mark II. The ΔE00 values for the three-time intervals were within clinically acceptable ranges. The ΔE00 values of both ceramic types at T3 were within 1.38–1.53 and 3.11–3.62 and lacked significant differences. Conclusions: Coca-Cola staining was obvious after 15 and 30 days of immersion and had a marked effect on the TP and ΔE00 of the tested CAD/CAM materials. Increasing the staining time resulted in a reduction in TP values at all time intervals. Zirconia samples had higher ΔE00 values than Mark II materials at different time periods. All of the colors of the tested materials had changed from B1 to different light colors in accordance with the Vita classical shade guide.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 90%

Section: Color Measurementsmentioning

confidence: 99%

Section: Application Of Staining Solutionsmentioning

confidence: 99%

See 3 more Smart Citations

Color Changes of Ceramic Materials Used for Inlay and Veneers Restorations after Staining with Different Time Intervals

Moaleem

Alamoudi²,

Aldhahri³

et al. 2021

JPRI

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Decontamination practices of paediatric crowns: a systematic review

Hogerheyde

Walsh

Zafar

2022

Eur Arch Paediatr Dent

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Purpose A systematic review was conducted into paediatric crown decontamination practices using the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Method After database retrieval using predefined search terms, two reviewers independently applied the selection criteria, extracted the data, and assessed for risk of bias. From 92 potentially eligible studies, 10 were included for analysis. Results Steam sterilisation (autoclaving) was used as the gold standard for reducing biological contaminants on paediatric crowns across in vivo studies. However, autoclaving was associated with microstructural changes such as crazing and contour alterations. Furthermore, several tooth coloured crowns were liable to undergo colour changes from steam sterilisation. Conclusion Ambiguous manufacturer guidelines on protocols for reprocessing and reuse after biological exposure raises concerns regarding cross contamination and leaves practitioners open to potential litigation. A better understanding of the compatibility of paediatric crowns and decontamination practices is needed. More research into alternative chairside technologies that use low temperature, such as hydrogen peroxide gas plasma sterilisation, is warranted.

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Preventing Color Fading in Artist’s Oil Paintings Based on Nano-PZT Ferroelectric Thin Film

Liu

2022

Mobile Information Systems

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Due to the excellent electrical properties, stable temperature characteristics, and abundant material systems of ferroelectric thin film materials, in recent years, ferroelectric devices based on silicon technology have been used in microelectronic mechanical systems, new energy photovoltaics, especially nonvolatile memory and other fields. During the preservation of the artist’s oil painting works, the temperature change will directly cause the physical effects of thermal expansion and contraction of the oil painting and the chemical reaction speed of the material in nature. Therefore, it is of great significance to introduce the technology of nano-PZT ferroelectric thin film into oil paintings to prevent fading. This article aims to study the research on preventing fading of the artist’s oil paintings based on nano-PZT ferroelectric thin films and analyze the characteristics of ferroelectric materials, the application of ferroelectric films, the preparation methods of ferroelectric films, and the basis of the main environmental factors that affect the fading of oil paintings. In the above, we studied the fading process of different concentrations of oil paints under simulated sunlight aging and the effect of different concentrations and thicknesses of PZT ferroelectric thin films coated with nano-TiO2 coatings on the color stability of oil paints. The experimental results show that after five times of simulated solar aging for the four concentrations, the total color difference △E: 0.05% group is the largest, 0.4% group is the smallest, the higher the oil paint concentration, the smaller the color difference, the better the color stability, and the antisimulation of sunlight fading.

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Effect of Thermocycle Aging on Color Stability of Monolithic Zirconia

Cited by 8 publications

References 33 publications

Color Changes of Ceramic Materials Used for Inlay and Veneers Restorations after Staining with Different Time Intervals

Color Changes of Ceramic Materials Used for Inlay and Veneers Restorations after Staining with Different Time Intervals

Decontamination practices of paediatric crowns: a systematic review

Preventing Color Fading in Artist’s Oil Paintings Based on Nano-PZT Ferroelectric Thin Film

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