Color Stability of CAD/CAM Ceramics Prepared with Different Surface Finishing Procedures

Kanat‐Ertürk, Burcu

doi:10.1111/jopr.13019

Cited by 57 publications

(64 citation statements)

References 24 publications

(52 reference statements)

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“…Also, it has been reported that the beverages included in a diet cause external discolorations on CAD/CAM materials and that the occurring stainings could be decreased to an acceptable level with a polishing processing. 23,35 In this in vitro study, the restorative materials were observed to discolor over the clinically acceptable level in wine and coffee exposures, the oral environment could not be fully simulated, though. In further studies, we suggest that it would be beneficial to support these findings with clinical studies investigating beverage-caused discoloration of composite, hybrid ceramic, and ZLS containing restorative materials.…”

Section: Discussionmentioning

confidence: 86%

“…In any clinical condition, however, the material is fixed to a dental structure and only its surface is exposed to solutions. Also, it has been reported that the beverages included in a diet cause external discolorations on CAD/CAM materials and that the occurring stainings could be decreased to an acceptable level with a polishing processing . In this in vitro study, the restorative materials were observed to discolor over the clinically acceptable level in wine and coffee exposures, the oral environment could not be fully simulated, though.…”

Section: Discussionmentioning

confidence: 99%

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Investigating the color changes on resin‐based CAD/CAM Blocks

Aydın

Karaoğlanoğlu

Oktay

et al. 2019

J Esthet Restor Dent

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Objective The improvement of the optical properties of new generation dental ceramics enables more esthetic and durable restorations. This study aimed to investigate the color changes, caused by exposure to different beverages on composite, hybrid ceramic, and zirconia‐reinforced lithium silicate (ZLS) CAD/CAM blocks. Materials and methods CAD/CAM blocks 40 samples (1.5 × 7 × 12 mm) were obtained from each material under water cooling. Following the polishing process and the initial color measurement, the prepared samples were exposed to red wine, coffee, cola, energy drink, and distilled water. Color changes were measured by spectrophotometer at the end of the 1st, 7th, and 30th days. To analyze the color change results, one‐way analysis of variance (ANOVA) test was performed. Results In all restorative material groups, the most prominent color changes were observed on the red wine‐exposed samples, then the coffee‐exposed ones. No significant discoloration was observed on the samples exposed to cola and energy drink, compared to the control group (P > .05). Among the samples exposed to red wine and coffee, the highest discoloration values were observed in composite CAD/CAM material. Conclusions At the end of the 30th day, all materials exposed to wine and coffee showed color change above the clinically acceptable value (ΔE00:2.25). Clinical significance Hybrid ceramic and ZLS CAD/CAM blocks recently used more often by clinicians have shown similar color changes. The results of our study indicate the necessity of choosing esthetic materials according to the dietary habits of individuals.

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Investigating the color changes on resin‐based CAD/CAM Blocks

Aydın

Karaoğlanoğlu

Oktay

et al. 2019

J Esthet Restor Dent

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“…Lithium disilicate pressed-ceramic crowns had decreased chroma (Tables V and VI), which can be explained by the increased translucency of this material. PC crowns permit a better light transmission than MC crowns and zirconia-ceramic crowns (ZC) [39][40][41][42].…”

Section: Discussionmentioning

confidence: 99%

Color matching of full ceramic versus metal-ceramic crowns - a spectrophotometric study

Greta

Gasparik

Colosi

et al. 2019

Medicine and Pharmacy Reports

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Background and aims. To verify the color match of metal-ceramic and full ceramic crowns, using instrumental methods. Methods. A number of 153 teeth (anterior and posterior teeth), in 62 patients, were restored with metal ceramic (MC, n=119), pressed-ceramic (PC, n=28), and zirconia-ceramic (ZC, n=6) full coverage crowns. The shade of a reference natural tooth was recorded instrumentally with a dental spectrophotometer (Vitaeasyshade Advance 4.0) in “single tooth measurement”, which provided the base color in Vita Classic (VC) and Vita 3D Master shades (3D). For verifying the outcome of the restoration “verify restoration” mode was used, and ΔE values were recorded for both VC and 3D Master shade guides. Moreover, matching symbols were also recorded (***=good, **=fair, *=poor). Descriptive statistics was performed and data were analyzed (One-sample z-Test, α=0.05) for comparison with visual thresholds in dentistry (Perceptibility Threshold – PT=1.2 and Acceptability Threshold – AT=2.7). Results. The data did not follow a normal distribution (Kolmogorov-Smirnov test, p<0.05). Recorded color difference was significantly higher than PT and AT, for all types of restorations, regardless of the coding system (p<0.05). For MC crowns in 2.52% (4.20% for 3D) of the cases the color difference was smaller than PT, in 19.32% (the same for 3D) of cases was between PT and AT, and in 78.15% (76.47% for 3D) of cases was higher than the AT. For PC crowns in 3.57% (0% for 3D) of the cases the color difference was smaller than PT, in 25% (32.14% for 3D) of cases was between PT and AT, and in 71.42% (67.85% for 3D) of cases was higher than the AT. In the case of ZC crowns none of the restorations had color difference smaller than PT, but in 16.66% of cases was between PT and AT, and in 83.33% of cases was higher than the AT, for both VC and 3D. Conclusion. Within the limitations of the study, a better color match was achieved in the case of pressed ceramic crowns, made of lithium disilicate. In most of the situations the color difference between the restoration and the reference tooth exceeded the perceptibility thresholds, but the matching was recorded as “fair” by the spectrophotometer.

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“…1 Color stability that can be affected by surface roughness is an important parameter in addition to the esthetic and mechanical properties of ceramic restorations for the success and longevity of the restorations. 2 Glazing is a method for obtaining a smooth surface. Indirect dentistry required try-in appointments, and the delivery should be performed only when no adjustment was required.…”

Section: Introductionmentioning

confidence: 99%

Effect of surface finishing treatments on the color stability of CAD/CAM materials

2020

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The aim of this study was to evaluate the effect of different surface finishing processes on the color stabilities of lithium disilicate glass-ceramics, zirconia-reinforced lithium silicate ceramics, and resin nanoceramics after artificial ageing. MATERIALS AND METHODS. 216 samples were prepared from 3 different CAD/CAM materials (LAVA Ultimate, IPS e.max CAD, VITA Suprinity) with A1 HT color at a size of 14 × 12 mm and a thickness of 0.5 ± 0.05 mm. Color measurements of the samples were performed with a spectrophotometer using color parameters and CIE Lab color system on a gray backing between baseline color and after 5000 cycles of artificial ageing in 4 stages (i.e. the first measurement before the treatment, the second measurement after polishing, the third measurement after cement application, and the fourth measurement after artificial ageing). The results were evaluated using the Variance analysis and Fisher's LSD test. RESULTS. Resin nanoceramics (LU) exhibited higher color change values than zirconia-reinforced lithium silicate (VS) and lithium disilicate (EC) ceramics after artificial ageing. Manual polishing and glazing resulted in similar color change for LU and VS (P>.05). In the EC group, glazing provided statistically different results as compared to the manual polishing and control groups (P<.05). Among the ceramic groups, color change values of the subgroup, which was treated by glazing, of the zirconia-reinforced lithium silicate (VS) and lithium disilicate (EC) samples were below the clinically acceptable level (ΔE < 3.5). CONCLUSION. The lowest color change for all stages was observed in Vita Suprinity.

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Color Stability of CAD/CAM Ceramics Prepared with Different Surface Finishing Procedures

Cited by 57 publications

References 24 publications

Investigating the color changes on resin‐based CAD/CAM Blocks

Investigating the color changes on resin‐based CAD/CAM Blocks

Color matching of full ceramic versus metal-ceramic crowns - a spectrophotometric study

Effect of surface finishing treatments on the color stability of CAD/CAM materials

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