Color Stability of Glass Ionomer Cement (GIC) Modified with Silica from Beach Sand after Immersion in Arabica Gayo Coffee

2020 ◽  
Vol 48 ◽  
pp. 99-104
Author(s):  
Liana Rahmayani ◽  
Iin Sundari ◽  
Diana Setya Ningsih ◽  
Pocut Aya Sofya ◽  
Rabithah Nasution
Keyword(s):  
Mechanical Properties ◽  
Color Change ◽  
Glass Ionomer Cement ◽  
Color Stability ◽  
Beach Sand ◽  
Glass Ionomer ◽  
Intrinsic Factors ◽  
Average Value ◽  
Color Changes ◽  
Ionomer Cement

The discoloration is a condition that can affect the color stability of a material. The discoloration of glass ionomer cement (GIC) can occur due to extrinsic and intrinsic factors. GIC has poor mechanical properties, which are brittle, which shows high microporosity in GIC. Microporosity of GIC can affect the ability of materials in maintaining color stability. Therefore, it is necessary to add material alternatives to improve the mechanical properties in order to maintain color stability in GIC, such as silica. This study aims to determine the color change in GIC which is added with 5% silica after immersion in gayo arabica packaging coffee. Cylindrical specimens with a diameter of 5 mm and 2 mm thick. Specimens amounted to 16 pieces consisting of two treatment groups, the first group using conventional GIC and the second group using GIC with the addition of silica. Both groups were immersed in arabica gayo coffee for 4 days. Color changes were observed with a stereomicroscope and then the value of CIELab was used using Adobe Photoshop, which measured its average color change parameter (ΔE). The average value of discoloration of conventional GIC ΔE = 5.77 and GIC with the silica addition ΔE = 7.94. The results of the unpaired t-test show a value (p> 0.05) which means that there is a significant color change. It can be concluded that the two groups had discoloration after immersion in Arabica gayo coffee, and the color change value in conventional GIC with the addition of silica was higher than conventional GIC.

scholarly journals Color Stability of Glass Ionomer Cement after Reinforced with Two Different Nanoparticles

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Sharat Chandra Pani ◽  
Moath Tofik Aljammaz ◽  
Abdullah Mohammed Alrugi ◽  
Abdulaziz Mohammed Aljumaah ◽  
Yazeed Minahi Alkahtani ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silver Nanoparticles ◽  
Carbon Nanotube ◽  
Silver Nanoparticle ◽  
Color Change ◽  
Glass Ionomer Cement ◽  
Color Stability ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Ionomer Cement

Aim. This study aimed to compare the staining characteristics of a commercially available restorative glass ionomer cement to a formulation reinforced by the addition of carbon nanotubes and another formulation reinforced by the addition of silver nanoparticles to the powder of the same cement. Methodology. Twenty samples each of a control glass ionomer cement (PULPDENT® Glass Fill®, Pulpdent Corp. Watertown, MA, USA), control cement reinforced with 0.0006 gm (0.03% by weight) of carbon nanotubes (Sigma Aldrich, St Louis MO, USA), and control cement reinforced with 0.2 gm (10% by weight) of silver nanoparticles (Nanocyl™, Nanocyl SA, Sambreville, Belgium) were immersed in a staining solution. Color evaluations were carried out after 1 h, 24 h, and 1 week. Color change values were calculated. Results. The results indicated that carbon nanotube reinforced specimens exhibited less color stability when compared to controlled glass ionomer cement specimens; however, both samples had significantly greater color stability than silver nanoparticle reinforced glass ionomer samples. Conclusion. It can be concluded within the limitations of this study that carbon nanotube reinforced glass ionomer cements have better color stability than silver nanoparticle reinforced glass ionomer cements.

Comparative Evaluation of Mechanical Properties of Ceramic Reinforced Glass Ionomer Cement and Type IX GIC:An Invitro Study

2019 ◽  
Vol 10 (12) ◽  
pp. 35
Author(s):  
Nagalakshmi Chowdhary ◽  
N. K. Kiran ◽  
A. Lakshmi Priya ◽  
Rajashekar Reddy ◽  
Arvind Sridhara ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Comparative Evaluation ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Ionomer Cement

scholarly journals Structural and long-term mechanical properties from a resin-modified glass ionomer cement after various delays of light-activation

2018 ◽  
Vol 37 (6) ◽  
pp. 874-879 ◽  
Author(s):  
Marianne LAGARDE ◽  
Philippe FRANCOIS ◽  
Stéphane LE GOFF ◽  
Jean-Pierre ATTAL ◽  
Elisabeth DURSUN
Keyword(s):  
Mechanical Properties ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Light Activation ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

scholarly journals Mechanical properties of a resin-modified glass ionomer cement for luting: effect of adding spherical silica filler

2010 ◽  
Vol 29 (3) ◽  
pp. 253-261 ◽  
Author(s):  
Lihua E ◽  
Masao IRIE ◽  
Noriyuki NAGAOKA ◽  
Takashi YAMASHIRO ◽  
Kazuomi SUZUKI
Keyword(s):  
Mechanical Properties ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Silica Filler ◽  
Spherical Silica ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

scholarly journals Composites Associated with Pulp-Protection Material: Color-Stability Analysis after Accelerated Artificial Aging

2010 ◽  
Vol 04 (01) ◽  
pp. 006-011 ◽  
Author(s):  
Diogo Rodrigues Cruvinel ◽  
Lucas da Fonseca Roberti Garcia ◽  
Simonides Consani ◽  
Fernanda de Carvalho Panzeri Pires-de-Souza
Keyword(s):  
Artificial Aging ◽  
Glass Ionomer Cement ◽  
Color Stability ◽  
Color Variation ◽  
Control Group ◽  
Glass Ionomer ◽  
Before And After ◽  
Material Composite ◽  
Ionomer Cement ◽  
Material Concept

ABSTRACTObjectives: This study assessed the color stability of two composites associated with two pulp protectors submitted to accelerated artificial aging (AAA).Methods: 60 test specimens were made with 0.5 mm of protection material (calcium hydroxide - CH or glass ionomer cement - GIC) and 2.5 mm of restoration material (Concept or QuixFil) and divided into 3 groups (n=10) according to the type of protection material/composite, and the control group (no protection). After polishing, color readings were obtained with a spectrophotometer (PCB 6807 Byk Gardner) before and after AAA for 384 hours, and L*, a*, and b* coordinates and total color variation (ΔE) were analyzed (2-way ANOVA, Bonferroni, α=05).Results: Composites placed on CH presented lower L* levels than those on GIC, which presented higher L* values than the control group and lower b* values than those of the CH group. The Concept composite presented higher ΔE levels for all groups, differing statistically from QuixFil, except when placed on GIC.Conclusions: It was concluded that the protection material could affect the color stability and AAA is a factor that enhances this effect, depending on the type of composite used. (Eur J Dent 2010;4:6-11)

scholarly journals Mechanical Properties Enhancement of Conventional Glass Ionomer Cement by Adding Zirconium Oxide Micro and Nanoparticles

2019 ◽  
Vol 25 (2) ◽  
pp. 72-81 ◽  
Author(s):  
Ali N. Alobiedy ◽  
Ali H. Alhille ◽  
Ahmed R. Al-Hamaoy
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Wear Rate ◽  
Zirconium Oxide ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Nano Particles ◽  
Glass Ionomer ◽  
Biaxial Flexural Strength ◽  
Ionomer Cement

The aim of this work is to enhance the mechanical properties of the glass ionomer cement GIC (dental materials) by adding Zirconium Oxide ZrO2 in both micro and nano particles. GIC were mixed with (3, 5 and 7) wt% of both ZrO2 micro and nanoparticles separately. Compressive strength (CS), biaxial flexural strength (BFS), Vickers Microhardness (VH) and wear rate losses (WR) were investigated. The maximum compression strength was 122.31 MPa with 5 wt. % ZrO2 micro particle, while 3wt% nanoparticles give highest Microhardness and biaxial flexural strength of 88.8 VHN and 35.79 MPa respectively. The minimum wear rate losses were 3.776µg/m with 7 wt. % ZrO2 nanoparticle. GIC-containing ZrO2 micro and nanoparticles is a promising restorative material with improved mechanical properties expect wear rate losses.  

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