Color match of machinable lithium disilicate ceramics: Effects of foundation restoration

Niu, Eva; Agustin, Marcus A.; Douglas, R.Duane

doi:10.1016/j.prosdent.2013.09.004

Cited by 34 publications

(34 citation statements)

References 38 publications

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“…Results of the present study showed that the color difference (Δ E 00 ) of a CAD/CAM glass‐ceramic lithium‐disilicate full‐ceramic crown is influenced by ceramic thickness and translucency, substrate color, and cement color. Data of this investigation are in agreement with previous studies in the literature …”

Section: Discussionsupporting

confidence: 93%

Effects of substrate, ceramic thickness, translucency, and cement shade on the color of CAD/CAM lithium‐disilicate crowns

Czigola

Ábrám

Kovács

et al. 2019

J Esthet Restor Dent

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Objective The aim of this in vitro study was to evaluate the effects of substrate colors, different levels of ceramic thickness and translucency, and cement shades on the color difference from a reference color of lithium‐disilicate crowns. Materials and Methods A premolar tooth preparation was made on a study model for 1.0 and 1.5 mm thick full‐ceramic crowns. Digital impressions were taken (3Shape TRIOS) and crowns designed in a CAD program (DentalDesigner). Shade A1 crowns were milled (Everest, Kavo) from high‐translucency (HT) and low‐translucency IPS e.max (Ivoclar Vivadent) blocks. Twelve substrates were made of different colors and materials (Natural Die Material, Co‐Cr, zirconia, and gold‐colored alloy). Three different shades of try‐in pastes were used to simulate the effect of cements (Variolink Esthetic try‐in paste; Ivoclar). Shade measurement was done three times for each crown by a spectrophotometer (VITA Easyshade Advance); averages were compared to a reference crown (A1, HT, 1.5 mm, ND2 abutment, neutral try‐in paste) with ΔE00 (CIEDE2000, according to the CIE latest standard) calculated. Results All the examined parameters influenced the ΔE00 of the crowns. The weakest effect was exerted by the try‐in paste. Conclusions All examined parameters influenced the final color of e.max CAD lithium‐disilicate ceramic crowns. Clinical Significance Matching the shade of ceramic crowns to the natural tooth color is a great challenge in dentistry. To meet patients' increasing esthetical expectations, CAD/CAM methods are very popular for full‐ceramic crowns. However, several factors such as the shade of the abutment, luting cement color, ceramic thickness, and translucency may influence the final color. Our objective was to measure the optical effect of these factors on the final shade of CAD/CAM lithium‐disilicate ceramic crowns.

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Section: Discussionsupporting

confidence: 93%

Effects of substrate, ceramic thickness, translucency, and cement shade on the color of CAD/CAM lithium‐disilicate crowns

Czigola

Ábrám

Kovács

et al. 2019

J Esthet Restor Dent

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“…These findings are not surprising, as it has been shown that especially metal substructures and different porcelains affect the final color of restorations [18]. Moreover, the porcelain thickness has been found to have an impact on chroma [19,20]. …”

Section: Discussionmentioning

confidence: 96%

Spectrophotometric Evaluation of Polyetheretherketone (PEEK) as a Core Material and a Comparison with Gold Standard Core Materials

et al. 2016

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This study investigated the colorimetric properties of different veneering materials on core materials. Standardized specimens (10 mm × 10 mm × 1.5 mm) reflecting four core (polyetheretherketone (PEEK), zirconia (ZrO2), cobalt–chromium–molybdenum alloy (CoCrMo), and titanium oxide (TiO2); thickness: 1.5 mm) and veneering materials (VITA Mark II, IPS e.max CAD, LAVA Ultimate and VITA Enamic, all in shade A3; thickness: 0.5, 1.0, 1.5 and 2 mm, respectively) were fabricated. Specimens were superimposed to assemblies, and the color was determined with a spectrophotometer (CieLab-System) or a chair-side color measurement device (VITA EasyShade), respectively. Data were analyzed using three-, two-, and one-way ANOVA, a Chi2-test, and a Wilson approach (p < 0.05). The measurements with EasyShade showed A2 for VITA Mark II, A3.5 for VITA Enamic, B2 for LAVA Ultimate, and B3 for IPS e.max CAD. LabE-values showed significant differences between the tested veneering materials (p < 0.001). CieLab-System and VITA EasyShade parameters of the different assemblies showed a significant impact of core (p < 0.001), veneering material (p < 0.001), and thickness of the veneering material (p < 0.001). PEEK as core material showed comparable outcomes as compared to ZrO2 and CoCrMo, with respect to CieLab-System parameters for each veneering material. The relative frequency of the measured VITA EasyShade parameters regarding PEEK cores also showed comparable results as compared to the gold standard CoCrMo, regardless of the veneering material used.

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“…8,9 As translucency permits the passage of light and also disperses light, it could be described as a state between complete opacity and transparency, 10 the light being diffused rather than reflected or absorbed. [11][12][13][14] Errors in brightness among teeth are considered the most noticeable esthetic error [15][16][17] because the human eye is more sensitive to the differences in value (brightness) than hue or chroma. [18][19][20] In addition, the translucency of ceramics is closely related to the light transmission and polymerization efficiency of underlying resin-based luting agents.…”

Section: Introductionmentioning

confidence: 99%

Translucency of esthetic dental restorative CAD/CAM materials and composite resins with respect to thickness and surface roughness

Awad

Stawarczyk

Liebermann

et al. 2015

The Journal of Prosthetic Dentistry

235

226

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Color match of machinable lithium disilicate ceramics: Effects of foundation restoration

Cited by 34 publications

References 38 publications

Effects of substrate, ceramic thickness, translucency, and cement shade on the color of CAD/CAM lithium‐disilicate crowns

Effects of substrate, ceramic thickness, translucency, and cement shade on the color of CAD/CAM lithium‐disilicate crowns

Spectrophotometric Evaluation of Polyetheretherketone (PEEK) as a Core Material and a Comparison with Gold Standard Core Materials

Translucency of esthetic dental restorative CAD/CAM materials and composite resins with respect to thickness and surface roughness

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