scholarly journals Evaluation of compressive strength, shear bond strength, and microhardness values of glass-ionomer cement Type IX and Cention N

2020 ◽  
Vol 23 (6) ◽  
pp. 550
Author(s):  
Vishakha Verma ◽  
Shivani Mathur ◽  
Vinod Sachdev ◽  
Divya Singh
Keyword(s):  
Compressive Strength ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Cement Type ◽  
Ionomer Cement

scholarly journals Sesame Oil (Sesamum Indicum L.) as a New Challenge for Reinforcement of Conventional Glass Ionomer Cement, Could It Be?

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Neven S. Aref
Keyword(s):  
Surface Roughness ◽  
Compressive Strength ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Color Stability ◽  
Sesame Oil ◽  
Glass Ionomer ◽  
Surface Microhardness ◽  
Ionomer Cement

Purpose. Despite the advantages of glass ionomer cement (GIC) including chemical bonding to the tooth structure and fluoride release, its low-grade mechanical properties make it a topic for research. Accordingly, this study was conducted to assess the ability of sesame oil as a natural bioactive additive to reinforce conventional glass ionomer cement. Materials and Methods. Sesame oil was blended into the liquid component of the cement in ratios of 3 and 5 ( v / v % ). One control and two experimental groups were enrolled in the study; I: unmodified GIC (control), II: 3 ( v / v % ) sesame oil-modified GICs, and III: 5( v / v % ) sesame oil-modified GICs. Compressive strength, shear bond strength, diametral tensile strength, surface microhardness, surface roughness, and color stability were the parameters assessed. A representative specimen of each group was analyzed for its chemical structure by Fourier transformation infrared spectroscopy. One-way ANOVA followed by Tukey test was used to analyze the collected data of all evaluated parameters except the color stability results, which were analyzed by Student t-test at p < 0.05 . Results. Three and 5 ( v / v % ) sesame oil-modified GICs exhibited significant increase in their compressive strength, shear bond strength, diametral strength, and surface microhardness. Concurrently, there was a significant decrease in surface roughness ( p < 0.05 ) in both formulations of the modified cement. Both 3 and 5 ( v / v % ) sesame oil-modified GICs showed a clinically acceptable color change. Conclusions. Sesame oil seems to be a promising natural bioactive product for reinforcement of conventional GIC with a clinically agreeable esthetic.

scholarly journals To Evaluate Shear Bond Strength of Resin Composite to Theracal Lc, Biodentine, and Resin–Modified Glass Ionomer Cement and Mode of Fracture: An In Vitro Study

2020 ◽  
Vol 8 (02) ◽  
pp. 49-54
Author(s):  
Salil Mehra ◽  
Ashu K. Gupta ◽  
Bhanu Pratap Singh ◽  
Mandeep Kaur ◽  
Ashwath Kumar
Keyword(s):  
Statistical Analysis ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Bonding Agent ◽  
Glass Ionomer ◽  
Universal Adhesive ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

Abstract Introduction The aim of the current study was to evaluate shear bond strength of resin composite bonded to Theracal LC, Biodentine, and resin-modified glass ionomer cement (RMGIC) using universal adhesive and mode of fracture. Materials and Methods A total of 50 caries-free maxillary and mandibular molars extracted were taken; occlusal cavities were prepared, mounted in acrylic blocks, and divided into five groups based on the liner used. Group 1: Biodentine liner placed into the cavity and bonding agent and resin composite applied after 12 minutes. Group 2: Biodentine liner placed into the cavity and bonding agent and resin composite applied after 14 days. Group 3: RMGIC liner placed into the cavity and bonding agent and resin composite applied immediately. Group 4: RMGIC liner placed into the cavity and bonding agent and resin composite applied after 7 days. Group 5: Theracal LC liner placed into the cavity and bonding agent and resin composite applied immediately. Each sample was bonded to resin composite using universal adhesive. Shear bond strength analysis was performed at a cross-head speed of 0.1 mm/min. Statistical Analysis  Statistical analysis was performed with one-way analysis of variance and posthoc Bonferroni test using SPSS version 22.0. Results and Conclusion Biodentine liner when bonded immediately to resin composite showed minimum shear bond strength. RMGIC when bonded to resin composite after 7 days showed maximum shear bond strength. Mode of fracture was predominantly cohesive in groups having Biodentine and Theracal LC as liner.

Influence of thermocycling on shear bond strength of glass ionomer cement to Er:YAG laser-prepared enamel

2015 ◽  
Vol 48 (10) ◽  
pp. 978-984 ◽  
Author(s):  
Yuan-Yuan Kong ◽  
Yi Chen ◽  
Rui Shen ◽  
Qian-Zhou Jiang ◽  
Min-Le Chen
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Er:Yag Laser ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Ionomer Cement

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&lt;0.001) and for 24 hours relative to 15 minutes (p&lt;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&lt;0.001). Resin showed significantly higher SBS than other substrates when bonded to RelyX Unicem and Multilink Automix in LP mode (p&lt;0.05). Overall, FujiCEM demonstrated significantly lower SBS than the three self-adhesive resin cements (p&lt;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.

An Evaluation of the Shear Bond Strength Developed Between a Glass Ionomer Cement and Enamel

1978 ◽  
Vol 57 (2) ◽  
pp. 232-232 ◽  
Author(s):  
T.D. Carlyle ◽  
A. Chamma ◽  
R.W. Moir ◽  
P.T. Williams
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Ionomer Cement
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