scholarly journals Radiopacity Evaluation of Contemporary Luting Cements by Digitization of Images

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
José Maurício dos Santos Nunes Reis ◽  
Érica Gouveia Jorge ◽  
João Gustavo Rabelo Ribeiro ◽  
Ligia Antunes Pereira Pinelli ◽  
Filipe de Oliveira Abi-Rached ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Resin Cements ◽  
Iso Standard ◽  
Luting Cements ◽  
Resin Modified Glass Ionomer ◽  
One Way Anova ◽  
Ionomer Cement

Objective. The aim of this study was to evaluate the radiopacity of two conventional cements (Zinc Cement and Ketac Cem Easymix), one resin-modified glass ionomer cement (RelyX Luting 2) and six resin cements (Multilink, Bistite II DC, RelyX ARC, Fill Magic Dual Cement, Enforce and Panavia F) by digitization of images. Methods. Five disc-shaped specimens ( mm) were made for each material, according to ISO 4049. After setting of the cements, radiographs were made using occlusal films and a graduated aluminum stepwedge varying from 1.0 to 16 mm in thickness. The radiographs were digitized, and the radiopacity of the cements was compared with the aluminum stepwedge using the software VIXWIN-2000. Data (mmAl) were submitted to one-way ANOVA and Tukey's test (). Results. The Zinc Cement was the most radiopaque material tested (). The resin cements presented higher radiopacity () than the conventional (Ketac Cem Easymix) or resin-modified glass ionomer (RelyX Luting 2) cements, except for the Fill Magic Dual Cement and Enforce. The Multilink presented the highest radiopacity () among the resin cements. Conclusion. The glass ionomer-based cements (Ketac Cem Easymix and RelyX Luting 2) and the resin cements (Fill Magic Dual Cement and Enforce) showed lower radiopacity values than the minimum recommended by the ISO standard.

scholarly journals In Vitro Shear Bond Strength of Three Self-adhesive Resin Cements and a Resin-Modified Glass Ionomer Cement to Various Prosthodontic Substrates

2013 ◽  
Vol 38 (2) ◽  
pp. 186-196 ◽  
Author(s):  
Camila Sabatini ◽  
Manthan Patel ◽  
Eric D'Silva
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Setting Reaction ◽  
Resin Modified Glass Ionomer ◽  
Bond Strengths ◽  
Ionomer Cement

SUMMARY Objective To evaluate the shear bond strength (SBS) of three self-adhesive resin cements and a resin-modified glass ionomer cement (RMGIC) to different prosthodontic substrates. Materials and Methods The substrates base metal, noble metal, zirconia, ceramic, and resin composite were used for bonding with different cements (n=12). Specimens were placed in a bonding jig, which was filled with one of four cements (RelyX Unicem, Multilink Automix, Maxcem Elite, and FujiCEM Automix). Both light-polymerizing (LP) and self-polymerizing (SP) setting reactions were tested. Shear bond strength was measured at 15 minutes and 24 hours in a testing device at a test speed of 1 mm/min and expressed in MPa. A Student t-test and a one-way analysis of variance (ANOVA) were used to evaluate differences between setting reactions, between testing times, and among cements irrespective of other factors. Generalized linear regression model and Tukey tests were used for multifactorial analysis. Results Significantly higher mean SBS were demonstrated for LP mode relative to SP mode (p<0.001) and for 24 hours relative to 15 minutes (p<0.001). Multifactorial analysis revealed that all factors (cement, substrate, and setting reaction) and all their interactions had a significant effect on the bond strength (p<0.001). Resin showed significantly higher SBS than other substrates when bonded to RelyX Unicem and Multilink Automix in LP mode (p<0.05). Overall, FujiCEM demonstrated significantly lower SBS than the three self-adhesive resin cements (p<0.05). Conclusions Overall, higher bond strengths were demonstrated for LP relative to SP mode, 24 hours relative to 15 minutes and self-adhesive resin cements compared to the RMGICs. Bond strengths also varied depending on the substrate, indicating that selection of luting cement should be partially dictated by the substrate and the setting reaction.

Retentive Strength of Luting Cements for Stainless Steel Crowns: An in vitro Study

2010 ◽  
Vol 34 (4) ◽  
pp. 309-312 ◽  
Author(s):  
Priya Subramaniam ◽  
Sapna Kondae ◽  
Kamal Kishore Gupta
Keyword(s):  
Stainless Steel ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Adhesive Resin ◽  
Luting Cements ◽  
Resin Modified Glass Ionomer ◽  
To Receive ◽  
Ionomer Cement

The present study evaluated and compared the retentive strength of three luting cements. A total of forty five freshly extracted human primary molars were used in this study. The teeth were prepared to receive stainless steel crowns. They were then randomly divided into three groups, of fifteen teeth each, so as to receive the three different luting cements: conventional glass ionomer, resin modified glass ionomer and adhesive resin. The teeth were then stored in artificial saliva for twenty four hours. The retentive strength of the crowns was determined by using a specially designed Instron Universal Testing Machine (Model 1011). The data was statistically analyzed using ANOVA to evaluate retentive strength for each cement and Tukey test for pair wise comparison. It was concluded that retentive strength of adhesive resin cement and resin modified glass ionomer cement was significantly higher than that of the conventional glass ionomer cement.

scholarly journals Effect of Hydroxyapatite on Surface Roughness of Zirconomer, and Conventional and Resin-Modified Glass Ionomers

2021 ◽  
Author(s):  
Farahnaz Sharafeddin ◽  
Somaye Bahrani
Keyword(s):  
Surface Roughness ◽  
Glass Ionomer Cement ◽  
Study Groups ◽  
Distilled Water ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Dental Restorative ◽  
One Way Anova ◽  
Ionomer Cement

Objectives: Glass ionomer cements (GICs) are among the most popular dental restorative materials, but their use is limited due to their clinical disadvantages. Many efforts have been made to improve the properties of these materials by adding various fillers. Incorporation of hydroxyapatite (HA) into the GICs is considered to improve the physical properties of restorations, and may prevent treatment failure. This study aimed to evaluate the surface roughness (Ra) of a conventional glass ionomer cement (CGIC), a resin-modified glass ionomer (RMGI) and a Zirconomer with and without micro-hydroxyapatite (µHA). Materials and Methods: This experimental study was conducted on 6 groups (n=10) including CGIC, CGIC + µHA, RMGI, RMGI + µHA, Zirconomer, and Zirconomer + µHA. A total of 60 disc-shaped samples (6 mm × 2 mm) were prepared in plastic molds and were stored in distilled water for 24 h. After polishing of the specimens, their Ra was measured by a profilometer in micrometers (µm). The data were analyzed using two and one-way ANOVA, Tukey's HSD test, and independent t-test. Results: Incorporation of µHA resulted in statistically significant differences in Ra between the study groups (P<0.05). Following the incorporation of µHA, the Ra significantly decreased in CGIC (P=0.013) and Zirconomer (P=0.003). However, addition of µHA to RMGI resulted in a significant increase in its Ra (P<0.001). Conclusion: Addition of µHA decreased the Ra of Zirconomer and CGIC, and increased the surface roughness of RMGI samples.

Comparison of the Solubility of Conventional Luting Cements with that of the Polyacid Modified Composite Luting Cement and Resin-modified Glass Ionomer Cement

2016 ◽  
Vol 17 (12) ◽  
pp. 1016-1021 ◽  
Author(s):  
Mathew Thomas ◽  
Mohammed Mustafa ◽  
Reshma Karkera ◽  
AP Nirmal Raj ◽  
Lijo Isaac ◽  
...  
Keyword(s):  
Zinc Phosphate ◽  
Glass Ionomer Cement ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Time Intervals ◽  
Luting Cements ◽  
Luting Cement ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

ABSTRACT Introduction This study was planned to find the solubility of the conventional luting cements in comparison with that of the polyacid-modified composite luting cement and recently introduced resin-modified glass ionomer cement (RMGIC) with exposure to water at early stages of mixing. Materials and methods An in vitro study of the solubility of the following five commercially available luting cements, viz., glass ionomer cement (GIC) (Fuji I, GC), zinc phosphate (Elite 100, GC), polyacid-modified resin cement (PMCR) (Principle, Dentsply), polycarboxylate cement (PC) (Poly - F, Dentsply), RMGIC (Vitremer, 3M), was conducted. For each of these groups of cements, three resin holders were prepared containing two circular cavities of 5 mm diameter and 2 mm depth. All the cements to be studied were mixed in 30 seconds and then placed in the prepared cavities in the resin cement holder for 30 seconds. Results From all of the observed luting cements, PMCR cement had shown the lowest mean loss of substance at all immersion times and RMGIC showed the highest mean loss of substance at all immersion times in water from 2 to 8 minutes. The solubility of cements decreased by 38% for GIC, 33% for ZnPO4, 50% for PMCR, 29% for PC, and 17% for RMGIC. Conclusion The PMCR cement (Principle-Dentsply) had shown lowest solubility to water at the given time intervals of immersion. This was followed by PC, zinc phosphate, and GIC to various time intervals of immersion. How to cite this article Karkera R, Nirmal Raj AP, Isaac L, Mustafa M, Reddy RN, Thomas M. Comparison of the Solubility of Conventional Luting Cements with that of the Polyacid Modified Composite Luting Cement and Resin-modified Glass Ionomer Cement. J Contemp Dent Pract 2016;17(12):1016-1021.

scholarly journals Effect Fresh Milk on Surface Roughness of Resin Modified Glass Ionomer Cement

2019 ◽  
Vol 22 (1) ◽  
pp. 12-14
Author(s):  
Astrid Yudhit ◽  
Kholidina Imanda Harahap ◽  
Yuli Ratna Dewi
Keyword(s):  
Surface Roughness ◽  
Primary Teeth ◽  
Glass Ionomer Cement ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Fresh Milk ◽  
Resin Modified Glass Ionomer ◽  
Before And After ◽  
One Way Anova ◽  
Ionomer Cement

Resin modified glass ionomer cement as restorative material used in dentistry especially in primary teeth. Fresh milk is often consumed by children as daily drink and it contains lactic acid. The aim of this study was to evaluate surface roughness of resin modified glass ionomer cement after immersed in fresh milk for 2, 4, and 6 hours. Samples were disc shape resin modified glass ionomer cement with size 5 mm in diameter and 2 mm in thickness. Totally 24 samples were divided into 3 groups (n=8), group immersed for 2 hours, group immersed for 4 hours, and group immersed for 6 hours. Fresh milk was pure cow’s milk that harvest in the morning by the farmer. Surface roughness measurements was done before and after immersed using a profilometer (Surfcorder SE-300, Laboratory Ltd, Japan). Results showed surface roughness change were 0.0217 ± 0.005 μm for groups A, 0.0366 ± 0.006 μm for groups B, and 0.0555 ± 0.004μm for groups of 6 hours. One Way Anova test showed significant differences between groups (p <0.05). It can be concluded that there was significant increased on surface roughness of modified resin ionomer cement after immersed in fresh milk for 2, 4 and 6 hours.    

scholarly journals Microleakage in bonded amalgam restorations using different adhesive materials

2004 ◽  
Vol 15 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Maximiliano Sérgio Cenci ◽  
Evandro Piva ◽  
Fernando Potrich ◽  
Elenita Formolo ◽  
Flávio Fernando Demarco ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Adhesive System ◽  
Control Group ◽  
Blue Dye ◽  
Glass Ionomer ◽  
Resin Cements ◽  
Resin Modified Glass Ionomer ◽  
Amalgam Restorations ◽  
Ionomer Cement ◽  
Adhesive Materials

The aim of this study was to verify the ability of different adhesive materials to prevent microleakage in bonded amalgam restorations. Standard cavities were prepared in both buccal and lingual surfaces of 35 bovine incisors. The gingival wall was located in cementum/dentin and the occlusal wall in enamel. Teeth (n=35) were divided into 5 groups, according to material employed (one glass-ionomer cement, two resin cements, one adhesive system, and Copalex varnish as a control). Following restoration, the teeth were submitted to thermal cycling. The teeth were subsequently immersed in methylene blue dye and sectioned to allow assessment of microleakage. Non-parametric statistical analysis indicated that all materials demonstrated less leakage than the control group (p<0.01). No leakage was found using the resin-modified glass-ionomer cement, which was significantly different from the other adhesive materials (p<0.05). Leakage in enamel was lower than in cementum/dentin margins. It was concluded that bonded amalgam was an effective technique, since all materials prevented microleakage in enamel and cementum/dentin, when compared to the control group, except Panavia in cementum/dentin margins.

scholarly journals In Vitro Bonding Performance of Modern Self-Adhesive Resin Cements and Conventional Resin-Modified Glass Ionomer Cements to Prosthetic Substrates

2020 ◽  
Vol 10 (22) ◽  
pp. 8157
Author(s):  
Encarna Piquer Maño ◽  
Rafael Marco Algarra ◽  
Amr Fawzy ◽  
Vicente C. B. Leitune ◽  
Fabrício M. Collares ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Resin Modified Glass Ionomer ◽  
Modern Self ◽  
Ionomer Cement

This study aimed at evaluating the shear bond strength (SBS) of modern self-adhesive resin cements and resin-modified glass ionomer cements applied to different prosthetic substrates. Zirconia, lithium-disilicate glass-ceramic and a noble metal alloy were used as bonding substrates. They were all sand-blasted with alumina, while LD was further etched with 9.6% hydrofluoric acid (10 s). A light-curing resin-modified glass ionomer cement (3M-GIC: Ketac Cem Plus) and a self-curing resin-modified glass ionomer cement (GC-GIC: FujiCEM 2) were compared to self-adhesive resin cements (PAN: Panavia SA Universal) and (3M-RES: Rely X Unicem 2). Ten specimens for each substrate were produced and up to five cylinders of each cement were bonded to each substrate. The shear bond strength (SBS) was evaluated after 24 h or after thermocycling (TC) aging (5000 cycles). The data was statistically analysed by two-way ANOVA and Student–Newman–Keuls test (α = 0.05). Failure modes were analysed through stereoscopic microscopy. The greatest SBS was attained with PAN, whilst 3M-GIC showed the lowest SBS and failed prevalently in adhesive mode. No difference in SBS was observed between GC-GIC and 3M-RES. After TC aging, all cements showed significant drop (p < 0.05) in SBS, but PAN showed the greatest SBS. Reliable bond strength to prosthetic substrates can be achieved with specific universal resin-luting cements and may be an alternative to glass ionomer cements when luting alloy substrates.

scholarly journals Pengaruh Perendaman Susu UHT dan Susu Sapi Segar Terhadap Kekasaran Resin-Modified Glass Ionomer Cement

2021 ◽  
Vol 3 (01) ◽  
pp. 29-35
Author(s):  
Fadil Abdillah Arifin ◽  
Erna Irawati ◽  
Indrya Kirana Mattulada ◽  
Sarahfin Aslan ◽  
Risnayanti Anas ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Control Group ◽  
P Value ◽  
Glass Ionomer ◽  
Control Group Design ◽  
Resin Modified Glass Ionomer ◽  
Post Test ◽  
Post Hoc ◽  
One Way Anova ◽  
Ionomer Cement

Pendahuluan: Resin-Modified Glass Ionomer Cement (RMGIC) atau Semen Ionomer Kaca Modifikasi Resin merupakan salah satu bahan restorasi yang digunakan di bidang kedokteran gigi. Pengembangan resin-modified glass ionomer cement dimulai sejak tahun 1967 untuk memperbaiki sifat fisik dan mengurangi sensitivitas air dari glass ionomer cement konvensional. Resin-Modified Glass Ionomer Cement (RMGIC) sebagai bahan kedokteran gigi memiliki beberapa keuntungan yaitu: RMGIC dapat melepaskan fluoride, kekuatan RMGIC lebih besar dibandingkan dengan glass ionomer cement konvensional, dan estetika lebih baik daripada Glass Ionomer Cement. Tujuan Penelitian: Untuk mengetahui pengaruh perendaman susu UHT dan susu sapi segar terhadap resin-modified glass ionomer cement. Metode: Penelitian ini menggunakan metode Eksperimental Laboratorium yaitu pengujian yang dilakukan di laboratorium dengan bentuk penelitian berupa Pre Test-Post Test with Control Group Design. Jenis penelitian yang dilakukan adalah True Eksperimental Laboratorium. Hasil: Berdasarkan uji one way anova sebelum perendaman diperoleh p-valuesebesar 0,795 (p>0,05) Berdasarkan uji one way anova setelah perendaman diperoleh p-value sebesar 0,669 (p>0,05) Berdasarkan uji post hoc multiple comparison diperoleh perbedaan rata-rata antara susu sapi segar dan susu UHT sebesar 0,1114500 , untuk aquades dan susu UHT sebesar -0,022000.  Kesimpulan: Tidak terdapat perubahan yang signifikan terhadap kekasaran resin-modified glass ionomer cement.

Microleakage of class II restoration with zirconia inlay: An in vitro study

2019 ◽  
pp. 61-67
Author(s):  
Xuan Anh Ngoc Ho ◽  
Anh Chi Phan ◽  
Toai Nguyen
Keyword(s):  
Glass Ionomer Cement ◽  
Class Ii ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Group 2 ◽  
Self Etch ◽  
Ionomer Cement ◽  
Group 1 ◽  
Composite Restoration

Background: Class II restoration with zirconia inlay is concerned by numerous studies about the luting coupling between zirconia inlay and teeth. The present study was performed to evaluate the microleakage of Class II zirconia inlayusing two different luting agents and compare to direct restoration using bulk fill composite. Aims: To evaluate the microleakage of Class II restorations using three different techniques. Materials and methods: The study was performed in laboratory with three groups. Each of thirty extracted human teeth was prepared a class II cavity with the same dimensions, then these teeth were randomly divided into 3 groups restored by 3 different approaches. Group 1: zirconia inlay cemented with self-etch resin cement (Multilink N); Group 2: zirconia inlay cemented with resin-modified glass ionomer cement (Fuji Plus); Group 3: direct composite restoration using bulk fill composite(Tetric N-Ceram Bulk Fill). All restorations were subjected to thermal cycling (100 cycles 50C – 55 0C), then immersed to 2% methylene blue solution for 24 hours. The microleakage determined by the extent of dye penetration along the gingival wall was assessed using two methods: quantitative and semi-quantitative method. Results: Among three types of restorations, group 1 demonstrated the significantly lower rate of leakage compared to the others, while group 2 and 3 showed no significant difference. Conclusion: Zirconia inlay restoration cemented with self-etch resin cement has least microleakage degree when compare to class II zirconia inlay restoration cemented with resin-modified glass ionomer cement and direct composite restoration using bulk fill composite. Key words: inlay, zirconia ceramic, class II restoration, microleakage.

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