Physical Properties, Film Thickness, and Bond Strengths of Resin‐Modified Glass Ionomer Cements According to Their Delivery Method

Sulaiman, Taiseer A.; Abdulmajeed, Awab; Altitinchi, Ali; Ahmed, Sumitha N.; Donovan, Terence E.

doi:10.1111/jopr.12779

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…The 2:1 (M = 24 µm) group showed statistically significantly higher mean values compared to all the other tested groups. The results were in agreement with those of Sulaiman et al [54] and Kious et al [55]. This could be explained on the basis that the plant extract mixtures did not alter the viscosity of GIC, which directly affects the cement film thickness, where cements of high viscosity showed rapid setting before they can flow properly to achieve a minimum film thickness [56].…”

Section: Film Thicknesssupporting

confidence: 90%

Shear Bond Strength and Film Thickness of a Naturally Antimicrobial Modified Dental Luting Cement

Singer

Bourauel

2021

Molecules

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Although several natural plants and mixtures have been known and used over the centuries for their antibacterial activity, few have been thoroughly explored in the field of dentistry. Thus, the aim of this study was to enhance the antimicrobial activity of a conventional glass ionomer cement (GIC) with natural plant extracts. The effect of this alteration on the bond strength and film thickness of glass ionomer cement was evaluated and related to an 0.5% chlorohexidine modified GIC. Olive leaves (Olea europaea), Fig tree (Ficus carica), and the leaves and roots of Miswak (Salvadora persica) were used to prepare an alcoholic extract mixture. The prepared extract mixture after the evaporation of the solvent was used to modify a freeze-dried glass ionomer cement at three different extracts: water mass ratios 1:2, 1:1, and 2:1. An 0.5% chlorhexidine diacetate powder was added to a conventional GIC for the preparation of a positive control group (CHX-GIC) for comparison. The bond strength to dentine was assessed using a material-testing machine at a cross head speed of 0.5 mm/min. Failure mode was analyzed using a stereomicroscope at 12× magnification. The cement film thickness was evaluated in accordance with ISO standard 9917-1. The minimum number of samples in each group was n = 10. Statistical analysis was performed using a Kruskal–Wallis test followed by Dunn’s post hoc test for pairwise comparison. There was a statistically insignificant difference between the median shear bond strength (p = 0.046) of the control group (M = 3.4 MPa), and each of the CHX-GIC (M = 1.7 MPa), and the three plant modified groups of 1:2, 1:1, 2:1 (M = 5.1, 3.2, and 4.3 MPa, respectively). The CHX-GIC group showed statistically significant lower median values compared to the three plant-modified groups. Mixed and cohesive failure modes were predominant among all the tested groups. All the tested groups (p < 0.001) met the ISO standard of having less than 25 µm film thickness, with the 2:1 group (M = 24 µm) being statistically the highest among all the other groups. The plant extracts did not alter either the shear bond strength or the film thickness of the GIC and thus might represent a promising additive to GICs.

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Section: Film Thicknesssupporting

confidence: 90%

Shear Bond Strength and Film Thickness of a Naturally Antimicrobial Modified Dental Luting Cement

Singer

Bourauel

2021

Molecules

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“…In addition, the RIVA group had a considerable number of pre-test failures. This reduction in micro-tensile bond strength can be attributed to the material’s high solubility and water sorption, which could potentially cause a decrease in the bond strength of the material [ 16 , 17 ].…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Micro-Tensile Bond Strength of a Novel Bioactive Dental Restorative Material (Surefil One)

Alghamdi,

Athamh,

Alzhrani

et al. 2024

Polymers

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Objectives: The aim of this study is to assess the micro-tensile bond strength and the mode of failure of a bioactive hybrid self-adhesive composite (Surefil one) under various dentin conditions. Methods: Thirty-two extracted human molar teeth were used to test the micro-tensile bond strength of Surefil one under different dentine conditions (no treatment, 37% phosphoric acid etching, and universal adhesive) in comparison with a resin-modified glass ionomer (RIVA). All restorations were light cure-bonded onto flat dentine and then sectioned into beams. Then, fractured specimens were observed under a light microscope to evaluate the mode of failure. Results: The Surefil one no-treatment group (NTG) exhibited the highest micro-tensile bond strength. Furthermore, there was no statistically significant difference observed between the Surefil one adhesive group (EAG) and the Surefil one acid etch group (EG). However, compared to other groups, the resin-modified glass ionomer (RIVA) produced the lowest results, which are statistically significant. Conclusion: Surefil one offers superior bond strength values when compared to resin-modified glass ionomers. Furthermore, Surefil one requires no dentin condition and has more straightforward clinical steps.

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“…It is interesting to mention that, for all materials, despite of the total film thickness, acquired by measurement of different points of the cementation and averaging them, it was observed that a thicker film was observed in the occlusal part of the cementation, agreeing with a previous study, 33 while in the margins, the thickness was clearly reduced, as observed in Figure 5. This fact is important since a thicker film in the margins could undergo more solubility than thinner ones 34 …”

Section: Discussionmentioning

confidence: 99%

Microcomputed tomography evaluation of cement film thickness of veneers and crowns made with conventional and 3D printed provisional materials

Sampaio

Niemann

Schweitzer³

et al. 2020

J Esthet Restor Dent

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Objective To evaluate, through microcomputed tomography (μCT), the cement film thickness of veneers and crowns made with different provisional materials. Material and Methods A veneer and a crown preparation were performed on a central incisor and a second molar of a dental model, respectively, scanned with an intraoral scanner, and the .stl files were exported to an LCD‐based SLA three‐dimensional (3D)‐Printer. Twenty‐four preparations were 3D‐printed for each veneer and crown and divided into four groups (n = 6/group): (a) Acrylic resin (Acrílico Marche); (b) Bisacrylic resin (Protemp 4); (c) PMMA computer‐aided design and computer‐aided manufacturing (CAD‐CAM) (Vipiblock); and (d) 3D‐printed resin for provisional restorations (Raydent C&B for temporary crown and bridge). Veneers and crowns restorations were performed and cemented with a flowable composite. Each specimen was scanned with a μCT apparatus, files were imported for data analysis, and cement film thickness was quantitatively measured. Data were analyzed by 2‐way ANOVA and Tukey post‐hoc tests (α = .05). Results Crowns presented a thicker cementation film than veneers (P < .05).The bisacrylic resin showed the smallest veneer film thickness, similar to the acrylic resin (P = .151), which was not significantly different than the PMMA CAD/CAM material (P = .153). The 3D printed provisional material showed the thicker film, different than all other materials (P < .05). The bisacrylic resin showed a cement film thickness with a high number of voids in its surface. For crowns cementation, the 3D printed provisional material showed the thicker cementation film, different than all other materials (P < .05). Conclusions Different provisional materials present different film thicknesses. The 3D printed provisional material showed the highest veneer and crown film thicknesses. Veneers film thicknesses were smaller than crowns for all provisional materials. Clinical Significance The 3D printed provisional material studied can be satisfactorily used, presenting appropriate adaptation with the tooth preparation, however, it shows the highest cement film thickness for both veneers and crowns cementations when compared with other provisional materials. A better internal fit, or smaller cement film thickness is obtained by CAD/CAM materials, acrylic and bisacrylic resins. Veneer cementation showed a smaller cement film thickness compared with crown cementation for all provisional materials.

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Physical Properties, Film Thickness, and Bond Strengths of Resin‐Modified Glass Ionomer Cements According to Their Delivery Method

Cited by 9 publications

References 10 publications

Shear Bond Strength and Film Thickness of a Naturally Antimicrobial Modified Dental Luting Cement

Shear Bond Strength and Film Thickness of a Naturally Antimicrobial Modified Dental Luting Cement

Assessment of the Micro-Tensile Bond Strength of a Novel Bioactive Dental Restorative Material (Surefil One)

Microcomputed tomography evaluation of cement film thickness of veneers and crowns made with conventional and 3D printed provisional materials

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