Effect of surface protection, staining beverages and aging on the color stability and hardness of recently introduced uncoated glass ionomer restorative material

Hamid, Dalia M. Abdel; Mahmoud, Gouda M.; El‐Sharkawy, F. M.; Auf, Eman Aly Abou

doi:10.1016/j.fdj.2018.05.004

Cited by 9 publications

(10 citation statements)

References 31 publications

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“…Studies have reported that benzoic acid in the co-polymeric acid of Ketac Universal could produce a mechanical interlocking effect upon hardening, making it less hydrolytic and more color stable. 17 Benzoic acid-containing cements have been reported to have good chemical resistance in the oral environment. 17 Color changes can also occur due to the leaching out of fluoride ions from the calcium fluorosilicate glass due to the ionic exchange between the material and the environmental solution, which affects its surface and structural integrity.…”

Section: Discussionmentioning

confidence: 99%

“… 17 Benzoic acid-containing cements have been reported to have good chemical resistance in the oral environment. 17 Color changes can also occur due to the leaching out of fluoride ions from the calcium fluorosilicate glass due to the ionic exchange between the material and the environmental solution, which affects its surface and structural integrity. 18 , 19 Therefore, greater discoloration of GIC Fuji IX GP Extra could also occur due to its higher fluoride release potential than Ketac Universal.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Different Herbal Tea Preparations on the Color Stability of Glass Ionomer Cements

Haque

Muliya

Somayaji

et al. 2021

CCIDE

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Objective To compare the color stability of the newer glass ionomer cements (GIC) when exposed to “Green tea” (GT), “Tulsi tea” (TT), and “Areca tea” (AT) using spectrophotometric analysis. Materials and Methods We selected commercially available GC Fuji IX GP EXTRA and Ketac Universal for this study. Eighty disc-shaped samples were made using a mold, which were immersed in the freshly prepared test solutions (distilled water, GT, TT, and AT) for 15 minutes per day for 60 days. The color estimation was done using a spectrophotometer. Results GC Fuji IX samples had a significantly higher mean difference in ΔE value than Ketac Universal when immersed in GT, AT, and control (P<0.001, 0.018, and <0.001), respectively. With GC Fuji IX, GT and AT stained more than TT and control solutions. Samples of Ketac Universal showed a significantly higher mean difference in ΔE values when immersed in AT, followed by GT, TT, and control. Conclusion Within the study’s limitations, we conclude that both the GICs exhibited staining over time on exposure to all the test solutions. Ketac Universal demonstrated lower staining potential than GIC Fuji IX GP Extra for GT and AT.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of Different Herbal Tea Preparations on the Color Stability of Glass Ionomer Cements

Haque

Muliya

Somayaji

et al. 2021

CCIDE

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“…24,25 The load given was 300 gf for 15 seconds. 26 The results of surface hardness were recorded and averaged. 26 Specimens in group A were stored for 7 days without immersion in artificial saliva and carbonated drinks.…”

Section: Methodsmentioning

confidence: 99%

“…26 The results of surface hardness were recorded and averaged. 26 Specimens in group A were stored for 7 days without immersion in artificial saliva and carbonated drinks. Specimens in group B were immersed in artificial saliva for 7 days.…”

Section: Methodsmentioning

confidence: 99%

Effect of varnish coating agent application on surface hardness of glass ionomer cement after immersion in carbonated drinks

2023

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Introduction: Glass ionomer cement is a material for treating dental caries. The disadvantage of glass ionomer cement is that if it comes into contact with acids before maturation, there will be a decrease in mechanical properties which is indicated by a decrease in surface hardness. Surface hardness has a relationship with aesthetics and resistance to scratches that can cause fractures. Coating agents like varnishes are required for glass ionomer cement to protect them from liquids with low pH level, such as carbonated drinks. Unfortunately many dentists neglected this procedure. The purpose of this research was to compare the surface hardness of glass ionomer cement which is protected and not protected by coating agent when its maturation is in contact with acids, to emphasize the importance of this procedure. Methods: This research was a laboratory experimental study. Samples consist of 24 glass ionomer cement specimens (GC Fuji IX GP EXTRA). Glass ionomer cement specimens were divided into 4 treatment groups. The first group was not applied with varnish and stored without immersion, the second group was applied with varnish and stored in artificial saliva, the third group was applied with varnish and soaked in carbonated drinks, and the last group was not applied with varnish and was immersed in carbonated drinks. The data that has been collected was processed and analyzed using the computer-based application IBM SPSS Statistics version 23.0. Results: There was a significant increase in the surface hardness of glass ionomer cement in all treatment groups. There was a significant difference in the mean surface hardness of glass ionomer cement after immersion in carbonated drinks between the groups that were applied with varnish coating agent and that without application of varnish coating agent. Conclusion: The surface hardness of glass ionomer cement restoration which was applied with varnish coating agent has a higher value compared to those not applied with varnish coating agent after immersion on carbonated drinks.Keywords: carbonated drinks, glass ionomer cement, microhardness test; saliva, varnish coating agent

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“…Restorative materials: manufactures, characteristics, general composition, and manufacturers' instructions(57)(58)(59).…”

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confidence: 99%

Effect of chlorhexidine gluconate on dentin carious lesion in vitro

Borompiyasawat¹

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Objective:The purpose of this study were to compare mean mineral density(MMD) and examine the remineralized pattern of carious dentin after cavity disinfectant with chlorhexidine gluconate (CHX) and restore with H-GIC in vitro. Materials and Methods: Selective caries removal to leathery dentin was performed in forty extracted primary molars. The samples were scanned using micro-computed tomography (micro-CT) as the MMD baseline and randomly divided into 4 groups: Group A (n=10) applied dentin conditioner and restored with H-GIC (Equia Forte™), Group B (n=10) disinfected the cavity with 2% CHX for 1 minute before applied dentin conditioner and restored with H-GIC (Equia Forte™), Group C (n=10) restored with H-GIC (Ketac Universal™) and Group D (n=10) disinfected the cavity with 2% CHX for 1 minute before restored with H-GIC (Ketac Universal™). After restoration, all samples were scanned micro-CT as the MMD after restoration. All samples were subjected to pH cycling process for 14 days and scanned micro-CT as the MMD after pH cycling. One sample from each group was randomly selected to analyze by the scanned electron microscope (SEM). Results: The comparison of MMD gain after restoration among 4 groups was a significant difference between EquiaTM and CHX-KetacTM group (oneway ANOVA with Post hoc (Tukey) test, P = 0.045). Group A: the MMD gain after restoration (±SD) was 88.81 (±59.857), group B; 168.29 (±100.899), group C; 165.54 (±72.366) and group D; 183.00 (±73.096) mgHA/ccm. Moreover, there was a significant difference of the MMD gain after restoration between EquiaTM and CHX-EquiaTM group (Independent t-test, P = 0.046). But between KetacTM and CHX-KetacTM group, there was no difference. From SEM, CHX-KetacTM group had the smallest dentinal tubule orifices and the thickest intertubular dentin among 4 groups. CHX-EquiaTM group had thicker intertubular dentin than EquiaTM group. Conclusion: The groups with 2% CHX as a cavity disinfectant had higher MMD gain and thicker intertubular dentin than non-CHX group. Therefore, the application of 2% CHX on demineralization dentin enhances the remineralization of contacted dentin underneath the restoration.

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Effect of surface protection, staining beverages and aging on the color stability and hardness of recently introduced uncoated glass ionomer restorative material

Cited by 9 publications

References 31 publications

Effect of Different Herbal Tea Preparations on the Color Stability of Glass Ionomer Cements

Effect of Different Herbal Tea Preparations on the Color Stability of Glass Ionomer Cements

Effect of varnish coating agent application on surface hardness of glass ionomer cement after immersion in carbonated drinks

Effect of chlorhexidine gluconate on dentin carious lesion in vitro

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