Clinical evaluation of perceptibility of color differences between natural teeth and all-ceramic crowns

Ishikawa-Nagai, Shigemi; Yoshida, Aki; Sakai, Maiko; Kristiansen, Joshua; Silva, John D. Da

doi:10.1016/j.jdent.2009.04.004

Cited by 102 publications

(100 citation statements)

References 21 publications

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“…22 ΔE value of 1.6 was determined to be a color difference that could not be detected by the human eye. 31 Color parameters of ceramic specimens were measured against white (CIE L*=94.467, a*=0.328, and b*=1.425) and black (CIE L*=9.657, a*=0.523, and b*=-0.075) backgrounds. …”

Section: Color Measurementmentioning

confidence: 99%

“…27,28 All-ceramic crowns permit greater light transmission through the crown and can mimic natural tooth appearance in terms of color, surface texture, and translucency. [29][30][31] Nevertheless, variations in translucency in core material in a restoration may influence the final optical outcome. 15,32 Core ceramics with high opacity are often used to mask the discolored substrates using the least amount of restoration thickness.…”

Section: Introductionmentioning

confidence: 99%

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Effects of surface-finishing protocols on the roughness, color change, and translucency of different ceramic systems

Akar

Pekkan

Çal

et al. 2014

The Journal of Prosthetic Dentistry

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STATEMENT OF PROBLEM Surface-finishing protocols have a mechanical impact on ceramic surfaces that could eventually affect surface topography and light scattering. An optimum protocol is needed to avoid damaging the optical properties of ceramics. PURPOSE The purpose of this study was to determine the effects of different surface-finishing protocols on the surface roughness, color change, and translucency of ceramic and metal ceramic restorations. MATERIAL AND METHODS Standardized disk-shaped specimens (1.5 × 10 mm, n=128) were fabricated from 3 different ceramic core materials (aluminum oxide [Al2O3]-AL, zirconium oxide [ZrO2]-ZR, lithium disilicate [Li2Si2O5]-LIT), veneered (V) with dentin ceramics (n=32 per group), and placed in the following groups: ALV, ZRV, and LITV. The metal ceramic group acted as the control (n=32). Four different surface-finishing methods were tested. Airborne-particle abrasion with 50 m Al2O3, polishing with adjustment kit, polishing with adjustment kit plus diamond polishing paste, and autoglazing (n=8 subgroup) were applied on the veneering ceramics. The specimens were analyzed with a profilometer for surface roughness, and color change and translucency were measured with a clinical spectrophotometer. Statistical analyses were performed with 1-way ANOVA and the Tukey honest significant difference tests (=.05). RESULTS Specimens treated with the airborne particle abrasion method showed significantly higher mean profilometer for surface roughness values in all groups (P<.05). The polishing with adjustment kit and autoglazing methods revealed statistically similar surface roughness values in all groups (P>.05). With the diamond polishing paste method, lower surface roughness values were achieved in the ZRV and metal ceramic groups acted as the control groups. Different surface-finishing methods affected the color change of the ceramic systems, except for ZRV. Surface-finishing protocols significantly affected the translucency values of the ALV, LITV, and metal ceramic groups (P<.05). CONCLUSIONS No single surface-finishing protocol can be recommended to obtain the smoothest surface and the least color change without affecting translucency for the ceramics tested. The airborne-particle abrasion protocol created rougher surfaces and decreased translucency, and color change in zirconia was not affected by the finishing protocols. Purpose. The purpose of this study was to determine the effects of different surface finishing protocols on the surface roughness, color change and translucency of all-ceramic and metalceramic restorations. Materials and methods.Standardized disc-shaped specimens (1.5 mm x 10 mm, N=128)were fabricated using three different all-ceramic core materials (Al 2 O 3 -AL, ZrO 2 -ZR, Li 2 Si 2 O 5 -LIT) materials and veneered (V) with dentin ceramics (n=32 per group) constituting the following groups: ALV, ZRV, LITV. Metal-ceramic group acted as the control (MC) (n=32). Four different surface finishing methods were tested: Air-borne particle abrasion (AB) with 5...

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Section: Color Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of surface-finishing protocols on the roughness, color change, and translucency of different ceramic systems

Akar

Pekkan

Çal

et al. 2014

The Journal of Prosthetic Dentistry

View full text Add to dashboard Cite

show abstract

“…Alternative methods for testing shades include the use of colorimeters, which are proving to be a more objective, reliable alternative to traditional shade selection with visual tabs (Ishikawa-Nagai, Yoshida, Sakai, Kristiansen, & Da Silva, 2009). In order for the quantitative measurements obtained by the colorimeters to have significance, the data must be compared to meaningful and established parameters.…”

Section: Optical Qualities and Spectrophotometersmentioning

confidence: 99%

“…Two important factors must be determined in order to measure the esthetic success of a restoration. First, the value of the Euclidean distance (ΔE), or change in color, should define a perceptible difference in color (Ishikawa-Nagai et al, 2009). …”

Section: Optical Qualities and Spectrophotometersmentioning

confidence: 99%

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Effect of porcelain thickness and translucency on the final shade of IPS e.max CAD overlaying a dark substrate.

Alena¹

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Understanding Color

Paravina¹

2018

Ronald E. Goldstein's Esthetics in Dentistry

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Clinical evaluation of perceptibility of color differences between natural teeth and all-ceramic crowns

Cited by 102 publications

References 21 publications

Effects of surface-finishing protocols on the roughness, color change, and translucency of different ceramic systems

Effects of surface-finishing protocols on the roughness, color change, and translucency of different ceramic systems

Effect of porcelain thickness and translucency on the final shade of IPS e.max CAD overlaying a dark substrate.

Understanding Color

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