Comparison of Film Thickness of Two Commercial Brands of Glass Ionomer Cement and One Dual-cured Composite: An in vitro Study

Khajuria, Rajat R; Singh, Rishav; Barua, Pranamee; Nausheen, Hajira; Gupta, Naveen Kumar; Thakkar, Rohit

doi:10.5005/jp-journals-10024-2104

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…The film thickness of luting cement is one of the essential rheological properties that enable the restorations to be seated properly on the prepared teeth [ 37 ]. According to ISO 9917–1:2007 specifications, the film thickness of luting cements should not exceed 25 μ .…”

Section: Discussionmentioning

confidence: 99%

Effect on Physical and Mechanical Properties of Conventional Glass Ionomer Luting Cements by Incorporation of All-Ceramic Additives: An In Vitro Study

Saran

Upadhya

Ginjupalli

et al. 2020

International Journal of Dentistry

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Introduction. Glass ionomer cements (GICs) are commonly used for cementation of indirect restorations. However, one of their main drawbacks is their inferior mechanical properties. Aim. Compositional modification of conventional glass ionomer luting cements by incorporating two types of all-ceramic powders in varying concentrations and evaluation of their film thickness, setting time, and strength. Material & Methods. Experimental GICs were prepared by adding different concentrations of two all-ceramic powders (5%, 10, and 15% by weight) to the powder of the glass ionomer luting cements, and their setting time, film thickness, and compressive strength were determined. The Differential Scanning Calorimetry analysis was done to evaluate the kinetics of the setting reaction of the samples. The average particle size of the all-ceramic and glass ionomer powders was determined with the help of a particle size analyzer. Results. A significant increase in strength was observed in experimental GICs containing 10% all-ceramic powders. The experimental GICs with 5% all-ceramic powders showed no improvement in strength, whereas those containing 15% all-ceramic powders exhibited a marked decrease in strength. Setting time of all experimental GICs progressively increased with increasing concentration of all-ceramic powders. Film thickness of all experimental GICs was much higher than the recommended value for clinical application. Conclusion. 10% concentration of the two all-ceramic powders can be regarded as the optimal concentration for enhancing the glass ionomer luting cements’ strength. There was a significant increase in the setting time at this concentration, but it was within the limit specified by ISO 9917–1:2007 specifications for powder/liquid acid-base dental cements. Reducing the particle size of the all-ceramic powders may help in decreasing the film thickness, which is an essential parameter for the clinical performance of any luting cement.

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Section: Discussionmentioning

confidence: 99%

Effect on Physical and Mechanical Properties of Conventional Glass Ionomer Luting Cements by Incorporation of All-Ceramic Additives: An In Vitro Study

Saran

Upadhya

Ginjupalli

et al. 2020

International Journal of Dentistry

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“…All these findings suggest that the usage of ZnPO 4 should be encouraged more than GIC. Since this is an in vitro study, other influencing factors, such as intrapulpal temperature, 10 humidity, 11,12 water/powder ratio, 13 and type of preparation 9 are not taken into consideration, which depicts limitations of the present study. It is also suggested to use cool glass slabs to mix dental cements to prolong working time and decrease thickness of the film.…”

Section: Discussionmentioning

confidence: 99%

Effect of Temperature on Film Thickness of Two Types of Commonly used Luting Cements

Kumar

Priyadarshini

Kumar

et al. 2017

The Journal of Contemporary Dental Practice

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Aim:The aim of this study is to evaluate the effect of temperature change on film thickness of both types of cements. Materials and methods:Totally, 60 samples were prepared with 10 in each subgroup, thus comprising 30 in each group. Materials tested were glass ionomer cement (GIC) type I and zinc phosphate type I. Samples were manipulated with manufacturer's instructions and tested according to American Dental Association (ADA) guidelines. Results:The mean values of film thickness were recorded for both groups I and II. In intragroup comparison of group 1, subgroup III (26.560 ± 0.489 µm) was found to have the highest film thickness followed by subgroup II (24.182 ± 0.576 µm) and the lowest in subgroup I (20.209 ± 0.493 µm). In intragroup comparison of group II, the film thickness recorded in subgroup III (25.215 ± 0.661 µm) was the highest followed by subgroup II (21.471 ± 0.771 µm) and the least in subgroup I (17.951 ± 0.654 µm; p < 0.01). In intergroup comparison of groups I and II, group II (21.545 ± 0.841) was found to have less film thickness than group I (23.650 ± 0.271). The results were found to be statistically significant (p < 0.01). Conclusion:Both zinc phosphate and GICs can be used satisfactorily for luting purpose. The temperature fluctuations have a direct influence on the film thickness. Zinc phosphate has less film thickness than GIC.Clinical significance: Zinc phosphate should be preferred over GIC in clinical practice, and more stress should be given in mechanical preparation of crowns for better retentive quality of prosthesis.

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“…Along with the mechanical properties for the selection of a suitable and durable luting agent, there are other clinically related properties that need to be taken into consideration, such as the film thickness [14]. During cementation, achieving a minimum film thickness is very important for the complete seating and adaptation of the prosthetic restorations.…”

Section: Introductionmentioning

confidence: 99%

“…During cementation, achieving a minimum film thickness is very important for the complete seating and adaptation of the prosthetic restorations. Moreover, a thin film thickness decreases the marginal discrepancies, cement dissolution, plaque accumulation, and periodontal disease [14,15].…”

Section: Introductionmentioning

confidence: 99%

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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Comparison of Film Thickness of Two Commercial Brands of Glass Ionomer Cement and One Dual-cured Composite: An in vitro Study

Cited by 5 publications

References 8 publications

Effect on Physical and Mechanical Properties of Conventional Glass Ionomer Luting Cements by Incorporation of All-Ceramic Additives: An In Vitro Study

Effect on Physical and Mechanical Properties of Conventional Glass Ionomer Luting Cements by Incorporation of All-Ceramic Additives: An In Vitro Study

Effect of Temperature on Film Thickness of Two Types of Commonly used Luting Cements

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

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