Effect of Three Commonly Consumed Beverages on Surface Roughness of Polished and Glazed Zirconia-Reinforced Lithium Silicate Glass Ceramics

Firouz, Farnaz; Vafaee, Fariborz; Khamverdi, Zahra; Khazaei, Sara; Gholiabad, Somayeh Ghorbani; Mohajeri, Mahsa

doi:10.18502/fid.v16i4.2089

Cited by 10 publications

(21 citation statements)

References 34 publications

(16 reference statements)

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“…The presence of a glassy matrix may lead to the dissolution of the glass network, considering that alkaline ions (Si, Ca, and Mg) are less stable when in a glassy matrix phase than in a crystalline phase (30,31) . This is in agreement with previous studies in which the surface roughness of polished Vita Suprinity specimens increased after acid exposure (34,35) .…”

Section: Discussionsupporting

confidence: 94%

Effect of Simulated Gastric Acid on Surface Roughness of Different Monolithic Ceramics

Aldamaty

Haggag

Othman

2020

Al-Azhar Journal of Dental Science

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Objectives: The purpose of this study was to evaluate the effect of simulated gastric acid on surface roughness of monolithic ceramics. Materials and methods: A total of forty ceramic disk-shaped specimens were obtained from four ceramic materials (10 each). Each disk was sawed with a final thickness of 1.0 mm using Isomet saw from ceramic blocks of each material (Ceramil Zolid fx white {Z}, IPS e.max CAD {E} HT A3, Vita Suprinity {S} HT A3, and Cerasmart {C} HT A3). Ceramil Zolid fx white disks were colored with A3 coloring liquid and sintered, while e.max CAD and Vita Suprinity were crystallized according to manufacturer's instructions. Surface roughness of ceramic disks was measured with a stylus profilometer before and after immersion in simulated gastric acid (HCl) for 96 h at 37 °C in an incubator. The collected data were statistically analyzed using ANOVA followed by Tukey's post-hoc test and the significance level was set at P ≤ 0.05. Results: There was no statistically significant difference (P ˃ 0.05) for Z and E groups after acid immersion, while for S and C groups, there was a statistically significant difference (P ˂ 0.05) after acid immersion. Conclusion: Surface roughness increased significantly for Vita Suprinity and Cerasmart after gastric acid immersion, while it decreased for Zolid fx and IPS e.max CAD but not significantly.

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Section: Discussionsupporting

confidence: 94%

Effect of Simulated Gastric Acid on Surface Roughness of Different Monolithic Ceramics

Aldamaty

Haggag

Othman

2020

Al-Azhar Journal of Dental Science

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“…In the oral environment, dietary pH fluctuates from acidic to alkaline depending on personal dietary preferences. Research studies reported different pH levels in food, drinks, and fruits [18][19][20][21], which could initiate the potential dissolution of teeth or the corrosion of ceramic materials. Despite the buffering capacity of saliva and cleansing ability of the tongue, the oral cavity is a harsh environment for restorative dental materials.…”

Section: Introductionmentioning

confidence: 99%

“…The roughening of ceramic surfaces is detrimental to the surface integrity of the opposing enamel antagonist [23] and adversely affects the fracture strength of the restoration [24,25]. International Standards Organization (ISO) standard 6872 tests for dental ceramic chemical durability [26] and constantly immerses ceramic in 4% acetic acid at 80 • C for 16 h. However, several studies demonstrated the effect of different pH solutions on the surface degradation and corrosion of ceramic [20,21,27,28]. Firouz et al showed orange juice (pH 3.5) and cola (pH 2.4) increased the surface roughness of ceramic [20].…”

Section: Introductionmentioning

confidence: 99%

“…International Standards Organization (ISO) standard 6872 tests for dental ceramic chemical durability [26] and constantly immerses ceramic in 4% acetic acid at 80 • C for 16 h. However, several studies demonstrated the effect of different pH solutions on the surface degradation and corrosion of ceramic [20,21,27,28]. Firouz et al showed orange juice (pH 3.5) and cola (pH 2.4) increased the surface roughness of ceramic [20]. Esquivel-Upshaw et al demonstrated that ceramics corroded in low and high pH solutions through different mechanisms [21].…”

Section: Introductionmentioning

confidence: 99%

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Effect of pH Cycling Frequency on Glass–Ceramic Corrosion

et al. 2020

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The effect of pH changes on the chemical durability of dental glass–ceramic materials was evaluated using weight loss and ion release levels. The hypothesis that increased pH changes will exhibit greater corrosion was investigated. The ion concentration was analyzed using inductively coupled plasma atomic emission spectrometer (ICP). The surface compositions were investigated using X-ray photoelectron spectroscopy (XPS). The surface morphologies were examined using scanning electron microscopy (SEM). Dental glass–ceramics were tested in constant immersion, 3-day cycling, and 1-day cycling with pH 10, pH 2, and pH 7 for 3, 15, and 30 days. The 1-d cycling group demonstrated the highest levels of weight loss compared with 3-d cycling and constant immersion. For the ion release, Si4+ and Ca2+ had the highest rates of release in 1-d cycling, whereas the Al3+ release rate with constant pH 2 was highest. The alteration/passivation layer that was formed on the surface of disks possibly prevented further dissolution of pH 10 corroded disks. XPS analysis demonstrated different surface compositions of corroded disks in pH 10 and pH 2. Si4+, K+, Na+, Al3+, and Ca2+ were detected on the surface of corroded pH 10 disks, whereas a Si4+ and P5+-rich surface formed on corroded pH 2 disks. SEM results demonstrated rougher surfaces for corroded disks in cycling conditions and pH 2 constant immersion. In conclusion, increased pH changes significantly promote the corrosion of dental glass–ceramic materials.

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“…Although Vita Suprinity showed a rougher surface after acid exposure (19,36) , it displayed more translucency. This is maybe the result of its high glass content and lithium silicate crystals that offer the material with its superior optical characteristics (37) .…”

Section: Discussionmentioning

confidence: 99%

Effect of Simulated Gastric Acid on Optical Properties of Different Monolithic Ceramics

Aldamaty

Haggag

Othman

2021

Al-Azhar Journal of Dental Science

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Objective: The purpose of this study was to evaluate the effect of simulated gastric acid on the color and translucency of monolithic ceramics. Materials and Methods: A total of forty ceramic disks made from four ceramic materials (10 each) were cut with a final thickness of 1.0 mm using Isomet saw from ceramic blocks of each material (Ceramil Zolid fx white [Z], IPS e.max CAD [E] HT A3, Vita Suprinity [S] HT A3, and Cerasmart [C] HT A3). Zirconia disks were then colored using A3 coloring liquid and sintered, while IPS e.max CAD and Vita Suprinity were crystallized according to their manufacturers' instructions. A spectrophotometer was used to evaluate color change (∆E) and translucency parameter (TP). L*a*b* color coordinates were determined over white and black backgrounds according to the CIE Lab 1976 color scale before and after immersion in simulated gastric acid (HCl) for 96 h at 37°C incubator. Collected data were statistically analyzed using ANOVA followed by Tukey's posthoc test and the significance level was set at P≤0.05. Results: The highest color change was recorded for group C followed by group E, group S, and the least change was with group Z. Translucency increased significantly (P˂0.05) after acid immersion for all materials except for group C. Conclusion: Zolid fx showed the greatest color stability after gastric acid immersion, while Cerasmart is the least one, however, all tested ceramics are within the clinically acceptable limit. Translucency increased after gastric acid immersion for all tested ceramics except for Cerasmart, it decreased.

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Effect of Three Commonly Consumed Beverages on Surface Roughness of Polished and Glazed Zirconia-Reinforced Lithium Silicate Glass Ceramics

Cited by 10 publications

References 34 publications

Effect of Simulated Gastric Acid on Surface Roughness of Different Monolithic Ceramics

Effect of Simulated Gastric Acid on Surface Roughness of Different Monolithic Ceramics

Effect of pH Cycling Frequency on Glass–Ceramic Corrosion

Effect of Simulated Gastric Acid on Optical Properties of Different Monolithic Ceramics

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