An Invitro Comparative Evaluation of Compressive Strength and Antibacterial Activity of Conventional GIC and Hydroxyapatite Reinforced GIC in Different Storage Media

Bali, Praveen Kumar; Prabhakar, A R; Basappa, N

doi:10.7860/jcdr/2015/13012.6205

Cited by 14 publications

(18 citation statements)

References 13 publications

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“…In a review study by Yip et al a range of 130-230 MPa was reported [34]. Bali et al [35] reported the value of 112 MPa, which is very similar to the findings of our study with regard to the compressive strength of the GIC material. The results discussed previously showed that adding gelatine and chondroitin sulphate to GIC reduced the compressive strength significantly.…”

Section: Discussionsupporting

confidence: 91%

Biomodification of a Class-V Restorative Material by Incorporation of Bioactive Agents

et al. 2019

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Restoring subgingival class-V cavities successfully, demand special biological properties from a restorative material. This study aimed to assess the effects of incorporating bioactive materials to glass ionomer cement (GIC) on its mechanical and biological properties. Hydroxyapatite, chitosan, chondroitin sulphate, bioglass, gelatine and processed bovine dentin were incorporated into a GIC restorative material. Compressive strength, biaxial flexural strength (BFS), hardness, setting and working time measurements were investigated. Biocompatibility of the new materials was assessed using both monolayer cell cultures of normal oral fibroblasts (NOF) and TR146 keratinocytes, and a 3D-tissue engineered human oral mucosa model (3D-OMM) using presto-blue tissue viability assay and histological examination. Significant reduction in the compressive strength and BFS of gelatine-modified discs was observed, while chondroitin sulphate-modified discs had reduced BFS only (p value > 0.05). For hardness, working and setting times, only bioglass caused significant increase in the working time. NOF viability was significantly increased when exposed to GIC-modified with bovine dentine, bioglass and chitosan. Histological examination showed curling and growth of the epithelial layer toward the disc space, except for the GIC modified with gelatine. This study has highlighted the potential for clinical application of the modified GICs with hydroxyapatite, chitosan, bioglass and bovine dentine in subgingival class-V restorations.

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Section: Discussionsupporting

confidence: 91%

Biomodification of a Class-V Restorative Material by Incorporation of Bioactive Agents

et al. 2019

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“…The intermediate layer is very resistant to acid and is difficult to break. Therefore, the addition of HA into GIC enhance the mechanical strength of the resulting GIC [ 23 , 30 , 31 ]. Figure 6 explained the schematic diagram of setting reaction of HA added GIC.…”

Section: Discussionmentioning

confidence: 99%

Incorporation of Hydroxyapatite into Glass Ionomer Cement (GIC) Formulated Based on Alumino-Silicate-Fluoride Glass Ceramics from Waste Materials

et al. 2021

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Glass ionomer cement (GIC) is a well-known restorative material applied in dentistry. The present work aims to study the effect of hydroxyapatite (HA) addition into GIC based on physical, mechanical and structural properties. The utilization of waste materials namely clam shell (CS) and soda lime silica (SLS) glass as replacements for the respective CaO and SiO2 sources in the fabrication of alumino-silicate-fluoride (ASF) glass ceramics powder. GIC was formulated based on ASF glass ceramics, polyacrylic acid (PAA) and deionized water, while 1 wt.% of HA powder was added to enhance the properties of the cement samples. The cement samples were subjected to four different ageing times before being analyzed. In this study, the addition of HA caused an increment in density and compressive strength results along with ageing time. Besides, X-ray Diffraction (XRD) revealed the formation of fluorohydroxyapatite (FHA) phase in HA-added GIC samples and it was confirmed by Fourier Transform Infrared (FTIR) analysis which detected OH‒F vibration mode. In addition, needle-like and agglomeration of spherical shapes owned by apatite crystals were observed from Field Emission Scanning Electron Microscopy (FESEM). Based on Energy Dispersive X-ray (EDX) analysis, the detection of chemical elements in the cement samples were originated from chemical compounds used in the preparation of glass ceramics powder and also the polyacid utilized in initiating the reaction of GIC.

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“…(16) This is in contrast to a study performed by Bali et al, in which the authors claimed that there was no significant relationship between the type of storage media and a change in the compressive strength of Fuji IX. (9) The current study used deionized water for storage in the incubator.…”

Section: Discussionmentioning

confidence: 99%

“…(7) As aging can have a profound effect on the compressive strength of glass ionomers, it is imperative to study its effect on the compressive strength of novel glass ionomers. (8)(9)(10)(11)(12) Although the physical properties of modern glass ionomers have been extensively reported, few studies have examined how these parameters change with age. (13) This study aimed to assess the effect of aging on the compressive strength of two glass ionomer restorative materials with a composite resin as a control.…”

Section: Original Article Introductionmentioning

confidence: 99%

Effects of Aging on Compressive Strength of Two Resin-Reinforced Glass Ionomers: An In-Vitro Study

Arjomand

Eghlim²,

Jalalian

et al. 2019

J Res Dentomaxillofac Sci

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Background and Aim:Although the physical properties of modern glass ionomers have been extensively reported, few studies have examined how these parameters change with age. This experimental study aimed to investigate the effect of aging on the compressive strength of resin-reinforced glass ionomers. Materials and Methods: Two glass ionomers (Fuji IX GP Fast, GC, Japan, and Ketac Universal, 3M, USA) and one composite resin (control; Filtek P60, 3M, USA) were chosen for this study. Both glass ionomers were encapsulated and mixed using an amalgamator and were applied using an appropriate applicator. Forty cylindrical (4×6 mm2) samples were made of each material and subsequently incubated at 37°C with 95±5% humidity. Twenty samples from each material were then randomly selected to undergo aging in a thermocycling machine using 1000 cycles (between 5-55°C). The compressive strength of the samples was then measured using a universal testing machine. One-way analysis of variance (ANOVA) and post-hoc Tuckey's test were used for data analysis. Results: The aging process (thermocycling) caused a significant increase in the compressive strength of all three materials. Overall, Ketac Universal displayed higher compressive strength with an average value of 271.1120±15.4387 MPa and 248.6910±15.10716 MPa with and without aging, respectively, compared to Fuji IX GP and Filtek P60. Conclusion: The aging process increases the compressive strength of glass ionomers and composites; however, even with aging, modern glass ionomers still struggle to achieve compressive strength values close to those feasible with composite resin. It is therefore essential to use these materials in non-stress-bearing areas.

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An Invitro Comparative Evaluation of Compressive Strength and Antibacterial Activity of Conventional GIC and Hydroxyapatite Reinforced GIC in Different Storage Media

Cited by 14 publications

References 13 publications

Biomodification of a Class-V Restorative Material by Incorporation of Bioactive Agents

Biomodification of a Class-V Restorative Material by Incorporation of Bioactive Agents

Incorporation of Hydroxyapatite into Glass Ionomer Cement (GIC) Formulated Based on Alumino-Silicate-Fluoride Glass Ceramics from Waste Materials

Effects of Aging on Compressive Strength of Two Resin-Reinforced Glass Ionomers: An In-Vitro Study

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