Comparative study of the dentin/adhesive systems interface after treatment with Er:YAG laser and acid etching using scanning electron microscope

2004 ◽  
Vol 34 (5) ◽  
pp. 385-390 ◽  
Author(s):  
Juliano F. Sassi ◽  
Daniela T. Chimello ◽  
Maria C. Borsatto ◽  
Silmara A.M. Corona ◽  
Jesus D. Pecora ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Comparative Study ◽  
Er:Yag Laser ◽  
Acid Etching ◽  
Adhesive Systems ◽  
Scanning Electron ◽  
Dentin Adhesive

Comparative study of iron ore characterisation using a scanning electron microscope and optical image analysis

2013 ◽  
Vol 122 (4) ◽  
pp. 217-229 ◽  
Author(s):  
E. Donskoi ◽  
J. R. Manuel ◽  
P. Austin ◽  
A. Poliakov ◽  
M. J. Peterson ◽  
...  
Keyword(s):  
Image Analysis ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Comparative Study ◽  
Iron Ore ◽  
Optical Image ◽  
Scanning Electron

The Effects of Differing Etch Times on the Etch Pattern on Enamel of Unerupted and Erupted Human Teeth Examined using the Scanning Electron Microscope

1987 ◽  
Vol 14 (2) ◽  
pp. 105-107 ◽  
Author(s):  
R. G. Oliver
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Phosphoric Acid ◽  
Acid Etching ◽  
Human Teeth ◽  
Etch Pattern ◽  
Scanning Electron

The etch pattern produced on enamel from unerupted and erupted human teeth with varying periods of acid etching using 37 per cent phosphoric acid was examined using a scanning electron microscope. For erupted enamel etch scores were fairly consistent above 10 seconds etching, for unerupted enamel etch scores matched those for erupted enamel for etch times above 30 seconds. The etch type was more consistent on unerupted enamel.

scholarly journals OBSERVATIONS ON ETCHED ENAMEL IN NON-ERUPTED DECIDUOUS MOLARS: A SCANNING ELECTRON MICROSCOPIC STUDY

1997 ◽  
Vol 11 (3) ◽  
pp. 157-160 ◽  
Author(s):  
Marcelo FAVA ◽  
Ii-Sei WATANABE ◽  
Flávio FAVA DE MORAES ◽  
Luciane RIBEIRO DE REZENDE SUCASAS DA COSTA
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Phosphoric Acid ◽  
Acid Etching ◽  
Etching Time ◽  
Type I ◽  
Type Ii ◽  
Electron Microscopic ◽  
Deciduous Molars ◽  
Scanning Electron

Under the scanning electron microscope, the characteristics of the buccal surface enamel of human non-erupted deciduous molars were evaluated after using 15, 30, and 45 seconds of phosphoric acid etching time. The teeth were extracted, kept in a 70% alcohol solution and later dehydrated and metallized for analysis with the scanning electron microscope JEOL, JSM-6.100. The in vitro experiment with 35% phosphoric acid revealed that there is a tendency of predominance of interprismatic enamel dissolution or type II pattern with 15 and 45 seconds etching time. The dissolution of the interprismatic enamel was more pronounced when an acid etching time of 45 seconds was used. The enamel surface demonstrated type I and type II patterns when acid etching time was 30 seconds

Mechanistic Investigations into the Adhesion between RFL-Treated Cords and Rubber. Part II: The Influence of the Vinyl-Pyridine Content of the RFL-Latex

2007 ◽  
Vol 80 (4) ◽  
pp. 565-579 ◽  
Author(s):  
W. B. Wennekes ◽  
R. N. Datta ◽  
J. W. M. Noordermeer
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Adhesive Systems ◽  
Resorcinol Formaldehyde ◽  
X Ray ◽  
Rubber Compounds ◽  
Vinyl Pyridine ◽  
Fundamental Understanding ◽  
Rubber Part ◽  
Scanning Electron

Abstract The adhesion between virgin textile cords and rubber is always weak, because of significant differences between fiber and rubber in modulus, elongation, polarity as well as reactivity. In order to improve the adhesion, it is common to use adhesive systems, which act as bridges between elastomer and reinforcement. These are commonly based on Resorcinol/Formaldehyde/Latex (RFL) dips. Despite the fact that this technique was invented in 1938 and no major improvements have been achieved since then, the mechanism by which the adhesion is obtained is still unclear. This paper contributes more fundamental understanding of RFL to rubber bonding. In previous work an enrichment of curatives at the RFL-rubber interface was observed by use of a Scanning Electron Microscope coupled to an Energy Dispersive X-ray spectrometer. In the present paper, the same method is used to determine the degree of enrichment for several RFL formulations, based on latices with varying vinyl-pyridine (VP) contents. The vinyl-pyridine content is varied by copolymerization of various VP terpolymers. Adhesion decreases with increasing vinyl-pyridine content for most rubber compounds. For aN NR compound with low accelerator content and a NR/SBR blend, an optimum vinyl-pyridine content of 10% is observed.

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