A Study of the Fracture Resistance of Nyyar Cores of Three Restorative Materials

10.2341/07-90 ◽  
2008 ◽  
Vol 33 (3) ◽  
pp. 305-311 ◽  
Author(s):  
S. Ferrier ◽  
B. S. Sekhon ◽  
P. A. Brunton
Keyword(s):  
Clinical Relevance ◽  
Fracture Resistance ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials ◽  
Core Materials

Clinical Relevance The fracture resistance of resin-modified glass ionomer cements merits consideration of their use as core materials for root-filled premolars.

Shear Bond Strength of Resin-modified Glass Ionomer Cements to Er:YAG Laser-treated Tooth Structure

10.2341/05-13 ◽  
2006 ◽  
Vol 31 (2) ◽  
pp. 212-218 ◽  
Author(s):  
A. E. Souza-Gabriel ◽  
F. L. B. Amaral ◽  
J. D. Pécora ◽  
R. G. Palma-Dibb ◽  
S. A. M. Corona
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Er:Yag Laser ◽  
Alternative Technique ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Tooth Structure ◽  
Resin Modified Glass Ionomer

Clinical Relevance Er:YAG laser adversely affected the adhesion of resin-modified glass ionomer cements to tooth structure and cannot be considered an alternative technique to the conventional turbine handpiece.

scholarly journals Influence on the Hardness of Resin Modified Glass Ionomer Cements following Exposure to High and Low Fluoride Containing Toothpastes

2014 ◽  
Vol 4 (2) ◽  
pp. 67-71
Author(s):  
Shumaila Iqbal Moosa ◽  
Faiza Amin ◽  
Muhammad Abbas
Keyword(s):  
Oral Cavity ◽  
Detrimental Effect ◽  
Vickers Microhardness ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials ◽  
High Fluoride ◽  
One Way Anova ◽  
Microhardness Tester

ABSTRACT Objective Resin modified glass ionomer cements (RMGICs) are fluoride releasing restorative materials. Their recharge with sources of fluoride (like toothpastes) during their service in oral cavity is a common practice. The purpose of this study was to establish the influence of fluoride containing toothpastes on hardness of RMGICs after exposure to acidic and neutral fluoride containing toothpastes. Materials and methods Sixty specimens were made from two RMGICs (Vitremer and Fuji II LC). Initially hardness was measured without exposure to source of fluoride of 20 control specimens using Vickers microhardness tester. Rest of the 40 experimental specimens were exposed to fluoridated toothpastes for 60 days twice daily for 2 minutes, then hardness of specimens was measured again using Vickers microhardness tester. Data was statistically analyzed using one-way ANOVA on SPSS version 16. Results RMGICs which were exposed to low fluoride neutral source had lower values of hardness than RMGICs which were exposed to high fluoride acidic source. Conclusion High fluoride containing acidic toothpaste exhibited no detrimental effect on hardness of specimens over the period of study. Specimens exposed to high fluoride containing acidic source displayed higher values of hardness than the specimens at baseline without exposure to source of fluoride. RMGICs used in our study proved to be materials which exhibit increase in hardness after exposure to protocols practiced in our research for its recharge. How to cite this article Moosa SI, Amin F, Abbas M. Influence on the Hardness of Resin Modified Glass Ionomer Cements following Exposure to High and Low Fluoride Containing Toothpastes. J Contemp Dent 2014;4(2):67-71.

Comparative Evaluation of Microleakage Among Three Different Glass Ionomer Types

2011 ◽  
Vol 36 (1) ◽  
pp. 36-42 ◽  
Author(s):  
S. Abd El Halim ◽  
D. Zaki
Keyword(s):  
Clinical Relevance ◽  
Comparative Evaluation ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials

Clinical Relevance Microleakage was evident in all restorative materials. Improvement was made when a resin-modified glass ionomer incorporated the benefits of nanotechnology.

Evolution of Anticariogenic Resin‐Modified Glass Ionomer Cements

2021 ◽  
Author(s):  
Zuleikha Malik ◽  
Danial Qasim Butt ◽  
Zainab Qasim Butt ◽  
Nawshad Muhammad ◽  
Muhammad Kaleem ◽  
...  
Keyword(s):  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer

scholarly journals Quantification of color variation of restorative materials used on pediatric dentistry after pigmentation

2015 ◽  
Vol 63 (4) ◽  
pp. 383-388
Author(s):  
Luísa Bandeira Pires Monteiro LOPES ◽  
Andreia Sofia Lopes de ARAÚJO ◽  
Virginia Barreiros MILAGRE
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Pediatric Dentistry ◽  
Color Variation ◽  
Control Group ◽  
Chocolate Milk ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Restorative Materials

Objective: To quantify the color variation of two glass ionomer cements and a composite resin used in pediatric dentistry, after being immersed in different pigments agents. Methods: Using two glass ionomer cements (Ketac(tm) Molar and Photac(tm) Fil) and a microhybrid composite resin (Filtek(tm) z250), were produced 40 disks of each material (10 mm in diameter and 2 mm thick). The samples were soaked in artificial saliva (control group), coke, peach Ice Tea(r) and chocolate milk, for 72 hours in an oven at 37ºC. After this period, the samples were washed in 50 ml of distilled water. Finally, using the spectrophotometer, it was made the reading of results. The color change was measured according to the CIE L * a * b * system. Color changes were statistically analyzed using parametric one-way ANOVA and ANOVA with Welch correction, the nonparametric Kruskal-Wallis tests and post-hoc Tukey and Dunnet T3 with p≤ 0.05. Results: The immersion of restorative materials in different pigmentation agents caused a significant color variation on the samples. The agent who presented higher results was the Peach Ice Tea(r). The chocolate milk was the fluid with lowest pigmentation capacity of all restorative materials under study. The greater color variation was found on the Ketac(tm) Molar submerged in Coca-Cola(r) and the smallest on the Filtek(tm) z250 in chocolate milk. Conclusion: All restorative materials were shown to be susceptible to pigmentation by all agents. The Filtek(tm) z250 proved to have better color stability, followed by Photac(tm) Fil and finally by Ketac(tm) Molar.

scholarly journals Assessment of the mechanical properties of glass ionomer cements for orthodontic cementation

2012 ◽  
Vol 17 (6) ◽  
pp. 154-159 ◽  
Author(s):  
Marcel M. Farret ◽  
Eduardo Martinelli de Lima ◽  
Eduardo Gonçalves Mota ◽  
Hugo Mitsuo S. Oshima ◽  
Gabriela Maguilnik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Strength Tests ◽  
Diametral Tensile Strength

OBJECTIVE: To evaluate the mechanical properties of three glass ionomers cements (GICs) used for band cementation in Orthodontics. METHODS: Two conventional glass ionomers (Ketac Cem Easy mix/3M-ESPE and Meron/Voco) and one resin modified glass ionomer (Multi-cure Glass ionomer/3M-Unitek) were selected. For the compressive strength and diametral tensile strength tests, 12 specimens were made of each material. For the microhardness test 15 specimens were made of each material and for the shear bond strength tests 45 bovine permanent incisors were used mounted in a self-cure acrylic resin. Then, band segments with a welded bracket were cemented on the buccal surface of the crowns. For the mechanical tests of compressive and diametral tensile strength and shear bond strength a universal testing machine was used with a crosshead speed of 1,0 mm/min and for the Vickers microhardness analysis tests a Microdurometer was used with 200 g of load during 15 seconds. The results were submitted to statistical analysis through ANOVA complemented by Tukey's test at a significance level of 5%. RESULTS: The results shown that the Multi-Cure Glass Ionomer presented higher diametral tensile strength (p < 0.01) and compressive strength greater than conventional GICs (p = 0.08). Moreover, Ketac Cem showed significant less microhardness (p < 0.01). CONCLUSION: The resin-modified glass ionomer cement showed high mechanical properties, compared to the conventional glass ionomer cements, which had few differences between them.

scholarly journals Effect of one-bottle adhesive systems on the fluoride release of a resin-modified glass ionomer

2004 ◽  
Vol 12 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Linda Wang ◽  
Marília Afonso Rabelo Buzalaf ◽  
Maria Teresa Atta
Keyword(s):  
Statistical Difference ◽  
Glass Ionomer Cement ◽  
Adhesive System ◽  
Fluoride Release ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Adhesive Systems ◽  
Resin Modified Glass Ionomer ◽  
The One ◽  
In The Beginning

A dhesive systems associated to resin-modified glass ionomer cements are employed for the achievement of a higher bond strength to dentin. Despite this benefit, other properties should not be damaged. This study aimed at evaluating the short-time fluoride release of a resin-modified glass ionomer cement coated with two one-bottle adhesive systems in a pH cycling system. Four combinations were investigated: G1: Vitremer (V); G2: Vitremer + Primer (VP); G3: Vitremer + Single Bond (VSB) and G4: Vitremer + Prime & Bond 2.1 (VPB). SB is a fluoride-free and PB is a fluoride-containing system. After preparation of the Vitremer specimens, two coats of the selected adhesive system were carefully applied and light-cured. Specimens were immersed in demineralizing solution for 6 hours followed by immersion in remineralizing solution for 18 hours, totalizing the 15-day cycle. All groups released fluoride in a similar pattern, with a greater release in the beginning and decreasing with time. VP showed the greatest fluoride release, followed by V, with no statistical difference. VSB and VPB released less fluoride compared to V and VP, with statistical difference. Regardless the one-bottle adhesive system, application of coating decreased the fluoride release from the resin-modified glass ionomer cements. This suggests that this combination would reduce the beneficial effect of the restorative material to the walls around the restoration.

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