Effect of Veneering Techniques on Color and Translucency of Y‐TZP

Luo, X. G.; Zhang, Lei

doi:10.1111/j.1532-849x.2010.00610.x

Cited by 55 publications

(79 citation statements)

References 36 publications

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“…In addition, the color differences in relation to the core thickness showed a tendency to decrease slightly as the specimen shade became darker. These are similar to the results of the study by Luo and Zhang20 on all-ceramic porcelain shades, and coincides with the results of the study by Lee et al21 on the effect of core thickness and type of upper porcelain on the restoration shade.…”

Section: Discussionsupporting

confidence: 92%

Evaluation of the color reproducibility of all-ceramic restorations fabricated by the digital veneering method

Kim

et al. 2014

J Adv Prosthodont

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PURPOSEThe objective of this study was to evaluate the clinical acceptability of all-ceramic crowns fabricated by the digital veneering method vis-à-vis the traditional method.MATERIALS AND METHODSZirconia specimens manufactures by two different manufacturing method, conventional vs digital veneering, with three different thickness (0.3 mm, 0.5 mm, 0.7 mm) were prepared for analysis. Color measurement was performed using a spectrophotometer for the prepared specimens. The differences in shade in relation to the build-up method were calculated by quantifying ΔE* (mean color difference), with the use of color difference equations representing the distance from the measured values L*, a*, and b*, to the three-dimensional space of two colors. Two-way analysis of variance (ANOVA) combined with a Tukey multiple-range test was used to analyze the data (α=0.05).RESULTSIn comparing means and standard deviations of L*, a*, and b* color values there was no significant difference by the manufacturing method and zirconia core thickness according to a two-way ANOVA. The color differences between two manufacturing methods were in a clinically acceptable range less than or equal to 3.7 in all the specimens.CONCLUSIONBased on the results of this study, a carefully consideration is necessary while selecting upper porcelain materials, even if it is performed on a small scale. However, because the color reproducibility of the digital veneering system was within the clinically acceptable range when comparing with conventional layering system, it was possible to estimate the possibility of successful aesthetic prostheses in the latest technology.

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Section: Discussionsupporting

confidence: 92%

Evaluation of the color reproducibility of all-ceramic restorations fabricated by the digital veneering method

Kim

et al. 2014

J Adv Prosthodont

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“…However, many factors, such as the color, opacity and thickness of the porcelain, along with the color of the underlying tooth and the color and thickness of the luting cement could affect the final appearance 11,17,19,20. In previous studies,2,21 ceramic materials have demonstrated varying translucency values, and some ceramics tend to be more opaque and can mask discoloration of the underlying tooth structure. Imitating the translucency of the natural tooth with the color is an important optical factor for ideal esthetics, because the translucency will strongly influence the appearance of the laminates 22…”

Section: Discussionmentioning

confidence: 99%

How will surface treatments affect the translucency of porcelain laminate veneers?

et al. 2014

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PURPOSE. The purpose of this study was to evaluate whether surface treatments affect the translucency of laminate veneers with different shades and thicknesses. MATERIALS AND METHODS. A total of 224 disc-shaped ceramic veneers were prepared from A1, A3, HT (High Translucent) and HO (High Opaque) shades of IPS e.max Press (Ivoclar Vivadent) with 0.5 mm and 1.0 mm thicknesses. The ceramics were divided into four groups for surface treatments. Group C: no surface treatments; Group HF: etched with hydrofluoric acid; Group SB: sandblasted with 50-μm Al 2 O 3 ; and Group L; irradiated with an Er;YAG laser. A translucent shade of resin cement (Rely X Veneer, 3M ESPE) was chosen for cementation. The color values of the veneers were measured with a colorimeter and translucency parameter (TP) values were calculated. A three-way ANOVA with interactions for TP values was performed and Bonferroni tests were used when appropriate (α=0.05). RESULTS. There were significant interactions between the surface treatments, ceramic shades and thicknesses (P=.001). For the 0.5-mm-thick specimens there were significant differences after the SB and L treatments. There was no significant difference between the HF and C treatments for any shades or thicknesses (P>.05). For the 1-mm-thick ceramics, there was only a significant difference between the L and C treatments for the HT shade ceramics (P=.01). There were also significant differences between the SB and C treatments except not for the HO shades (P=.768). CONCLUSION. The SB and L treatments caused laminate veneers to become more opaque; however, HF treatment did not affect the TP values. When the laminate veneers were thinner, both the shade of the ceramic and the SB and laser treatments had a greater effect on the TP values. [ J Adv Prosthodont 2014;6:8-13]

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“…The different-sized fluorapatite crystals control the relationship between translucency, opalescence, and brightness of the restorations. 24 Results of the current study indicated perceptible color changes for the tested ceramic systems subjected to a different surface finishing protocols when compared with Vita shade tab. However, in this study, only the dentin ceramic was used as a layering ceramic in each ceramic system.…”

Section: Discussionmentioning

confidence: 92%

“…16,19 Ceramic translucency and color can be affected by many properties, including ceramic thickness, crystalline structure, number of ceramic firings, veneering technique, repeated ceramic staining cycles, grain size, pigments, number, size and distribution of defects, and porosity. [20][21][22][23][24][25][26] The wide-spread clinical use of metal-ceramic restorations is mainly due to its highly predictable strength and reasonable esthetics. The drawback of such restorations is increased light reflectivity due to opaque porcelain layer.…”

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

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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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Effect of Veneering Techniques on Color and Translucency of Y‐TZP

Abstract: Y-TZP all-ceramic restoration veneered by fully anatomical technique was the most transparent and lightest, while restorations veneered by cutback technique were the least translucent and the darkest.

Cited by 55 publications

References 36 publications

Evaluation of the color reproducibility of all-ceramic restorations fabricated by the digital veneering method

Evaluation of the color reproducibility of all-ceramic restorations fabricated by the digital veneering method

How will surface treatments affect the translucency of porcelain laminate veneers?

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

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