The effects of nanofilled resin-based coatings on the physical properties of glass ionomer cement restorative materials

Jafarpour, Dana; Meşe, Ayşe; Ferooz, Maryam; Bagheri, Rafat

doi:10.1016/j.jdent.2019.07.015

Cited by 24 publications

(20 citation statements)

References 20 publications

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“…However, this protection duration is not exactly known for both surface coating agents used in our study. It was determined that the most effective time was the first 24 hours 28 . This result is also parallel with the results of our study.…”

Section: Discussionsupporting

confidence: 92%

“…Similar to our study results the previous studies reported that glass ionomer based materials are capable of absorbing acidic fluids, resulting in material degradation and dimensional changes 33,34 . The application of coating materials on the surface of GICs may decrease water sorption and solubility and improve GIC's properties 28 . In our study, both glass ionomer based materials were applied with their own coating agents recommended by the manufacturer.…”

Section: Discussionsupporting

confidence: 88%

“…Baseline pH values give only a measure of the initial hydrogen ion concentration. But, it is important to indicate the presence of undissociated acid to predict the erosive potential of an acidic beverage realistically 28 . Titratable acidity is determining the total number of acid molecules 29 .…”

Section: Discussionmentioning

confidence: 99%

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Surface degradation evaluation of different self‐adhesive restorative materials after prolonged energy drinks exposure

Yazkan

2020

J Esthet Restor Dent

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Aim: To evaluate the effects of energy drinks and soft beverages on the surface degradation of different self-adhesive materials. Materials and methods: A 156 disc shaped specimens of each of the following materials were prepared: Alkasite (Cention N, CN), High viscozity glass ionomer (Equia Forte, EF), Glass Carbomer (GCP Fill, GC) (n = 52). After specimen preparations, baseline surface roughness measurements were done using a 3D non-contact optical profilometer. Then, specimens were subdivided into 4 subgroups (n = 13) and stored in petri dish containing Red Bull; Burn; Coca-Cola and Distilled water. The surface roughness of the specimens were measured after 1-day, 1-week, and 1-month of immersion in beverages. Result: It was observed that 1-month Red Bull immersion revealed the highest roughness difference (ΔRa) for each self-adhesive restorative material and this was followed by Burn. Whereas, the lowest ΔRa values were observed after 1-day coke and distilled water immersion in all tested material groups (P < 0.05). Coke and distilled water presented the energy drinks' 1-day immersion affect, after 1-week immersion (P < 0.05). Conclusion: The energy drinks have a substantially damaging effect on roughness of self adhesive materials compared with soft drinks and distilled water; and this effect is increasing with exposure duration.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 88%

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Surface degradation evaluation of different self‐adhesive restorative materials after prolonged energy drinks exposure

Yazkan

2020

J Esthet Restor Dent

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“…On the other hand, previous authors showed that the bleaching agents had no effect on microleakage of enamel-and dentin-adhesive agent interface [8][9][10][17][18][19], which is in contrasts with the results of the present study. Some of the possible reasons for this might be the differences in the type of bonding agents being used, not using a coating agent in these studies and the class of the cavity being prepared (Class 1), which was placed on the occlusal surface only, while in the present study, class V cavities were prepared with their gingival margin 1 mm below the CEJ.…”

Section: Dye Penetrationcontrasting

confidence: 99%

Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

Hajilou¹,

Zajkani

Naghili

2020

Pesqui. Bras. Odontopediatria Clín. Integr.

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To evaluate the effect of a resin coating material on the microleakage of Class V composite resin restorations with and without post-operative bleaching. Material and Methods: Eighty class V cavities (3×3×1.5 mm) were prepared and filled with Z250 XT composite resin in the buccal and lingual surfaces of 40 sound human molars. Then the samples were randomly divided into 4 groups (n=20) and treated as follows: Group A: applying a resin coating (G-Coat Plus) on the restoration, then bleaching with 40% hydrogen peroxide; Group B: Post-Operative bleaching without prior use of resin coating; Group C: applying resin coating agent, and no further bleaching; and Group D: no resin coating, no bleaching. The specimens were thermocycled and immersed in 1% methylene blue for 24 hours, then cut into sections bucco-lingually. The samples were scored regarding the amount of dye penetration under a stereomicroscope (x20). Data were analyzed with Chi-squared and Fisher exact tests (p<0.05). Results: The maximum gingival and occlusal microleakage was detected in group B, while the minimum was seen in group C. In all the groups, microleakage at gingival margins was higher than occlusal margins (p<0.001). Conclusion: Application of a resin coating is an effective method in reducing microleakage of the restorations before and after bleaching.

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“…23 According to the findings of the present study, there was a significant difference between the coated and uncoated specimens in terms of water sorption. In line with previous studies 17,24 who showed that the application of a coating agent significantly decreased water sorption and solubility of RM-GICs, our findings verified that the coating application contributed to significantly reduced water sorption values of resin composites. Similarly, the application of a coating agent resulted in a significant reduction in the solubility values of almost all trial materials.…”

Section: Water Sorption and Solubilitysupporting

confidence: 92%

The Effect of Nanofilled Resin-Base Coating on the Mechanical and Physical Properties of Resin Composites

et al. 2020

Self Cite

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Objective The aim of this study was to evaluate the effects of a nanofilled resin-base coating on the physical and mechanical properties of four different types of resin composites. Materials and Methods Disc-shaped specimens of four resin composites (Aura bulk fil [SDI], IPS Impress Direct [Ivoclar], Filtek Z250, and Filtek P60 [3M/ESPE]) were prepared and divided in two groups: either uncoated or coated with G-coat plus (n = 10). The specimens were obtained and stored in distilled water (DW) at 37°C. For water sorption and solubility, the specimens were stored for 60 days in DW and measured according to ISO 4049 instructions. The specimens were subjected to color change (ΔE), microhardness, and flexural strength (FS) measurements after 24 hours and 60 days of immersion in DW. Statistical analysis ANOVA, post hoc Tukey’s, and independent t-tests were used to analyze data. Results Mean solubility values of coated groups were significantly lower than that of uncoated ones (p < 0.001). No significant differences were detected between neither water sorption nor FS of coated and uncoated groups (p = 0.502 and p = 0.510, respectively). For all materials except IPS Empress, the mean values for ΔE were not statistically different between coated and uncoated groups, and mean microhardness values of the uncoated groups were significantly greater than the coated groups (p < 0.001). Conclusion Coating resin composites improved water sorption and solubility but increased ΔE, decreased microhardness, and had no significant effect on FS in the long run.

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The effects of nanofilled resin-based coatings on the physical properties of glass ionomer cement restorative materials

Cited by 24 publications

References 20 publications

Surface degradation evaluation of different self‐adhesive restorative materials after prolonged energy drinks exposure

Surface degradation evaluation of different self‐adhesive restorative materials after prolonged energy drinks exposure

Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

The Effect of Nanofilled Resin-Base Coating on the Mechanical and Physical Properties of Resin Composites

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