Effect of beverage solutions and toothbrushing on the surface roughness, microhardness, and color stainability of a vitreous CAD-CAM lithium disilicate ceramic

Alencar-Silva, Flávia Jucá de; Barreto, J O; Negreiros, Wagner Araújo de; Silva, Paulo G B; Fiamengui, Lívia Maria Sales Pinto; Regis, Rômulo Rocha

doi:10.1016/j.prosdent.2019.02.001

Cited by 37 publications

(50 citation statements)

References 30 publications

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“…The least change in surface roughness was related to the control group (only immersed in coffee solution), which may be explained by factors other than mechanical, such as the acidity of the coffee (pH 5.1) and the solution elevated temperature, which can negatively affect the ceramic surface roughness. 6,9 The solution’s acidity could degrade the glaze layer by the loss of alkaline ions and dissolve the silica, resulting in surface corrosion represented in the increased roughness. 9 It is also in line with previous studies which reported that the low pH of the acidic beverages combined with elevated temperatures, such as coffee, resulted in a significant increase in surface roughness of CAD-CAM lithium disilicate and feldspathic ceramics.…”

Section: Discussionmentioning

confidence: 99%

The effect of coffee and whitening systems on surface roughness and gloss of CAD/CAM lithium disilicate glass cermaics

Al‐Angari

Meaigel

Almayouf

et al. 2021

Journal of Applied Biomaterials & Functional Materials

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Objectives: To investigate the effects of a coffee beverage and two whitening systems on the surface roughness and gloss of glazed Lithium Disilicate Glass-Ceramics (LDGC) for computer-aided design/computer-aided manufacturing (CAD/CAM) systems. Methods: Sixty-eight LDGC disks (12 × 10 × 2 mm) were prepared from blocks of CAD/CAM systems (IPS e.max CAD ceramic). Baseline measurements for surface roughness (Ra) and gloss (GU) were taken using a 3-D optical profilometer and a glossmeter, respectively; then specimens were randomized into four groups ( n = 17). All specimens were immersed in a coffee solution (24 h × 12 days) then subjected to two whitening systems. G1-negative control (kept moist × 7 days); G2-positive control (brushed with distilled water, 200 g/load, 2 min twice daily × 7 days); G3-whitening toothpaste (Colgate optic white; relative dentin abrasivity (RDA) = 100, 200 g/load, 2 min twice daily × 7 days); and G4-simulated at-home bleaching protocol (Opalescence,15% carbamide peroxide (CP), 6 h/day × 7 days). The study outcomes were measured at baseline and after the treatments. Data were analyzed using paired T-test and one-way ANOVA (α = 0.05). Results: The mean surface roughness significantly increased ( p ⩽ 0.002) for all groups after the designated treatment protocols. Among groups, the mean surface roughness of G2 and G3 were significantly higher ( p ⩽ 0.001) (Ra: 0.51 and 0.57 μm, respectively) compared to the control group (Ra: 0.23 μm), and were not significantly different from G4 (Ra: 0.46 μm). Surface gloss decreased with no significant change within or among groups after treatment. Conclusion: All glazed LDGC had a significant increase in surface roughness after being subjected to simulated 1 year of coffee drinking and whitening systems (15% CP and whitening toothpaste), and the greatest change was associated with brushing (simulating 8 months). However, coffee beverages and whitening systems had no significant effect on the surface gloss.

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Section: Discussionmentioning

confidence: 99%

The effect of coffee and whitening systems on surface roughness and gloss of CAD/CAM lithium disilicate glass cermaics

Al‐Angari

Meaigel

Almayouf

et al. 2021

Journal of Applied Biomaterials & Functional Materials

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“…Irrespective of surface treatment, red wine caused higher Δ E 00 values, in line with previous findings in the literature . In their study on the discoloration of lithium disilicate ceramic CAD/CAM material in different beverages, Alencar‐Silva et al reported that wine caused the highest discoloration . Similarly, in our study, the highest color change among CAD/CAM materials was observed in red wine and later in coffee ( P > .05).…”

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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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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“…Gawriolek et al [29] reported a similar mean color parameter of IPS e-max after soaking in the coffee for 72 hours at 1.71. Alencar-Silva et al [30] described mean color change for both glazed and polished CAD-CAM lithium disilicate ceramic due to beverages is below the perceptibility threshold of 1.30.…”

Section: Discussionmentioning

confidence: 99%

Effect of Hydrothermal Aging and Beverages on Color Stability of Lithium Disilicate and Zirconia Based Ceramics

2019

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Background and Objectives: All-ceramic prosthesis is widely used in modern dental practice because of its improved physico-mechanical and optical properties. These restorations are exposed to coloring agents from various nutrition and beverages in the oral cavity. Long-term color stability is critical for the success of these restorative materials. The purpose of this in vitro study was to assess the effect of common beverages and mouthwash on the color stability of lithium disilicate (LD), monolithic zirconia (MZ) and bilayer zirconia (BZ) surfaces. Materials and Method: Thirty disc-shaped specimens from each material were fabricated; each group was subdivided (n = 10) according to coffee, green tea and chlorhexidine immersion solutions. The baseline color of ceramic discs was recorded according to the CIE L*a*b* system with a portable spectrophotometer. The second measurement was recorded after 3000 thermocycling and immersion in coloring agents for 7 days. The mean color difference was calculated and data were compared with Kruskal-Wallis and Mann-Whitney post hoc tests (0.05). Results: ΔE values for LD with the immersion of coffee, tea, and Chlorhexidine gluconate (CHG) were 1.78, 2.241 and 1.58, respectively. Corresponding ΔE values for MZ were 5.60, 5.19, and 4.86; marginally higher than the clinically acceptable level of 3.5. Meanwhile, BZ showed better color stability compared to MZ with ΔE values of 4.22, 2.11 and 1.43. Conclusions: Among the ceramics evaluated, LD ceramic was found to be more color stable, while MZ ceramics displayed a higher susceptibility to discoloration. MZ and BZ ceramic colors were significantly altered with coffee immersion, while LD ceramics were more affected by green tea.

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Effect of beverage solutions and toothbrushing on the surface roughness, microhardness, and color stainability of a vitreous CAD-CAM lithium disilicate ceramic

Cited by 37 publications

References 30 publications

The effect of coffee and whitening systems on surface roughness and gloss of CAD/CAM lithium disilicate glass cermaics

The effect of coffee and whitening systems on surface roughness and gloss of CAD/CAM lithium disilicate glass cermaics

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

Effect of Hydrothermal Aging and Beverages on Color Stability of Lithium Disilicate and Zirconia Based Ceramics

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