scholarly journals Characterization of Dentine to Assess Bond Strength of Dental Composites

Materials ◽  
2015 ◽  
Vol 8 (5) ◽  
pp. 2110-2126 ◽  
Author(s):  
Saad Liaqat ◽  
Anas Aljabo ◽  
Muhammad Khan ◽  
Hesham Nuba ◽  
Laurent Bozec ◽  
...  
Keyword(s):  
Bond Strength ◽  
Dental Composites

Light-cured dental composites characterization by Electron Microscopy

1990 ◽  
Vol 48 (4) ◽  
pp. 428-429
Author(s):  
B. M. Culbertson ◽  
M. L. Devinev ◽  
E. C. Kao
Keyword(s):  
Electron Microscopy ◽  
Mechanical Analysis ◽  
Service Performance ◽  
Dental Composite ◽  
Dental Composites ◽  
Neat Resin ◽  
Scanning Calorimetry ◽  
Research Meeting ◽  
Formulation Variables

The service performance of current dental composite materials, such as anterior and posterior restoratives and/or veneer cements, needs to be improved. As part of a comprehensive effort to find ways to improve such materials, we have launched a broad spectrum study of the physicochemical and mechanical properties of photopolymerizable or visible light cured (VLC) dental composites. The commercially available VLC materials being studied are shown in Table 1. A generic or neat resin VLC system is also being characterized by SEM and TEM, to more fully understand formulation variables and their effects on properties.At a recent dental research meeting, we reported on the differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) characterization of the materials in Table 1. It was shown by DSC and DMA that the materials are substantially undercured by commonly used VLC techniques. Post curing in an oral cavity or a dry environment at 37 to 50°C for 7 or more hours substantially enhances the cure of the materials.

scholarly journals Analytical Investigation on the Effect of Test Setup on Bond Strength

CivilEng ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 14-34
Author(s):  
Konstantinos Tsiotsias ◽  
Stavroula J. Pantazopoulou
Keyword(s):  
Bond Strength ◽  
Pullout Test ◽  
Analytical Investigation ◽  
Strength Increase ◽  
Confining Stress ◽  
Direct Tension ◽  
Bond Slip ◽  
Test Setup ◽  
Long Time

Experimental procedures used for the study of reinforcement to concrete bond have been hampered for a long time by inconsistencies and large differences in the obtained behavior, such as bond strength and mode of failure, depending on the specimen form and setup used in the test. Bond is controlled by the mechanics of the interface between reinforcement and concrete, and is sensitive to the influences of extraneous factors, several of which underlie, but are not accounted for, in conventional pullout test setups. To understand and illustrate the importance of specimen form and testing arrangement, a series of computational simulations are used in the present work on eight distinct variants of conventional bar pullout test setups that are used routinely in experimental literature for the characterization of bond-slip laws. The resulting bond strength increase generated by unaccounted confining stress fields that arise around the bar because of the boundary conditions of the test setup is used to classify the tests with respect to their relevance with the intended use of the results. Of the pullout setups examined, the direct tension pullout test produced the most conservative bond strength results, completely eliminating the contributions from eccentricity and passive confinement.

Studies of the Flame Spraying of Polymers

1996 ◽  
Author(s):  
D.J. Varacalle ◽  
K.W. Couch ◽  
V.S. Budinger
Keyword(s):  
Bond Strength ◽  
Combustion Process ◽  
Experimental Studies ◽  
Polymer Coatings ◽  
Flame Spraying ◽  
Knoop Microhardness ◽  
Resultant Coating ◽  
Strength Characterization ◽  
Thermally Sprayed

Abstract Experimental studies of the subsonic combustion process have been conducted in order to determine the quality and economics of polyester, epoxy, urethane, and hybrid polyester-epoxy coatings. Thermally sprayed polymer coatings are of interest to several industries for anti-corrosion applications, including the infrastructural, chemical, automotive, and aircraft industries. Classical experiments were conducted, from which a substantial range of thermal processing conditions and their effect on the resultant coating were obtained. The coatings were characterized and evaluated by a number of techniques, including Knoop microhardness tests, optical metallography, image analysis, and bond strength. Characterization of the coatings yielded thickness, bond strength, hardness, and porosity.

scholarly journals The influence of free-radical concentration on the shear bond strength of dental composites

2018 ◽  
Vol 52 (2) ◽  
pp. 177-182
Author(s):  
B. Kiteska ◽  
N. Funduk ◽  
P. Cevc ◽  
A. Jesih ◽  
A. Anžlovar ◽  
...  
Keyword(s):  
Free Radical ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Dental Composites ◽  
Radical Concentration ◽  
Free Radical Concentration

Micro-tensile bond strength and interfacial characterization of an adhesive bonded to dentin prepared by contemporary caries-excavation techniques

2011 ◽  
Vol 27 (6) ◽  
pp. 552-562 ◽  
Author(s):  
Aline de A. Neves ◽  
Eduardo Coutinho ◽  
Marcio V. Cardoso ◽  
Jan de Munck ◽  
Bart Van Meerbeek
Keyword(s):  
Bond Strength ◽  
Tensile Bond Strength ◽  
Caries Excavation

Fabrication and characterization of remineralizing dental composites containing hydroxyapatite nanoparticles

2020 ◽  
Vol 109 ◽  
pp. 103817
Author(s):  
Renata Nunes Jardim ◽  
Anderson Araújo Rocha ◽  
Alexandre Malta Rossi ◽  
Aline de Almeida Neves ◽  
Maristela Barbosa Portela ◽  
...  
Keyword(s):  
Dental Composites ◽  
Hydroxyapatite Nanoparticles ◽  
Fabrication And Characterization

scholarly journals Effect of sodium metabisulfite gel on the bond strength of dentin of bleached teeth

2018 ◽  
Vol 12 (02) ◽  
pp. 163-170
Author(s):  
Henrique Heringer Vieira ◽  
Josè Carlos Toledo ◽  
Anderson Catelan ◽  
Thayla Hellen Nunes Gouveia ◽  
Flávio Henrique Baggio Aguiar ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Data Analysis ◽  
Statistical Analysis ◽  
Bond Strength ◽  
Deleterious Effect ◽  
Statistical Difference ◽  
Dental Composites ◽  
Sodium Metabisulfite ◽  
Application Time ◽  
Testing Data

ABSTRACT Objective: This study aimed to evaluate the effect of the application of sodium metabisulfite (SMB) on the bond strength of bleached teeth. Materials and Methods: The study was divided into two parts. The first part evaluated the application of various concentrations of SMB for 1 h prior to the completion of bonding procedures. Fifty blocks were divided into five groups (n = 10): control; bleaching with 35% hydrogen peroxide (HP); HP + 5% SMB; HP + 12.5% SMB; and HP + 25% SMB. The second part evaluated the application of 25% gel SMB to either enamel or dentin, including the application time. Sixty blocks were divided into six groups (n = 10): control; bleaching with 35% HP; HP + 25% SMB for 1 h in enamel; HP + 25% SMB for 1 h in dentin; HP + 25% SMB for 10 min in enamel; and HP + 25% SMB for 10 min in dentin. Statistical Analysis: Following the completion of microshear bond testing, data were analyzed using one-way analysis of variance as well as Tukey's and Dunnett's tests. Results: In part 1, data analysis revealed statistical differences (P < 0.0001) between HP and HP + 5% SMB. No statistical differences were found between the control and both HP + 12.5% SMB and HP + 25% SMB. Part 2 revealed a statistical difference (P = 0.001359) only between the bleached group and others. Conclusions: The use of 25% SMB gel immediately after bleaching was able to reverse the deleterious effect of bleaching on the bond strength of dental composites to dentin.

Flexure strength of resin-modified glass ionomer cements and their bond strength to dental composites

1996 ◽  
Vol 54 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Jianguo Li ◽  
Yajuan Liu ◽  
Yun Liu ◽  
Rune Söremark ◽  
Folke Sundström
Keyword(s):  
Bond Strength ◽  
Dental Composites ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Flexure Strength ◽  
Resin Modified Glass Ionomer
Sign in / Sign up

Export Citation Format

Share Document