Results 341 to 350 of about 4,642,550 (404)
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A critique of bond strength measurements
Journal of Dentistry, 1989The lack of consistent values for dentine bond strengths in shear or in tension from what are superficially identical experimental procedures has led to ambiguities in the interpretation of the data. These variations in bond strength are usually considered to be related to different adhesive procedures.
R, Van Noort +3 more
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Nature, 2008
Postdocs are attempting to organize and improve their lot worldwide — but results have been mixed. Paul Smaglik reports.
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Postdocs are attempting to organize and improve their lot worldwide — but results have been mixed. Paul Smaglik reports.
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Acta Odontologica Scandinavica, 1996
No currently available bond test for dental metal ceramic systems has yet gained general acceptance. Such a bond test cannot be established without careful analysis of the stress distribution within the adherence region. The objective of the present study was to establish a mechanical shear stress test and combine the results with a finite element ...
M, Persson, M, Bergman
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No currently available bond test for dental metal ceramic systems has yet gained general acceptance. Such a bond test cannot be established without careful analysis of the stress distribution within the adherence region. The objective of the present study was to establish a mechanical shear stress test and combine the results with a finite element ...
M, Persson, M, Bergman
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Iranian endodontic journal, 2016
Introduction: The aim of this in vitro study was to evaluate the effect of canal dryness on the push-out bond strength of two resin sealers (AH-Plus and Adseal) and a bioceramic sealer (Endosequence BC sealer) after canal irrigation with sodium ...
H. Razmi +3 more
semanticscholar +1 more source
Introduction: The aim of this in vitro study was to evaluate the effect of canal dryness on the push-out bond strength of two resin sealers (AH-Plus and Adseal) and a bioceramic sealer (Endosequence BC sealer) after canal irrigation with sodium ...
H. Razmi +3 more
semanticscholar +1 more source
Bond Strength in Cold Roll Bonding
CIRP Annals, 1985Summary The mechanisms producing metallic bonds in cold welding are fracture of the contaminant surface film, extrusion of base material through the cracks and builoup of real contact and coalescing with base material of the opposite surface. Bay has earlier proposed a general model for the bond strength in cold welding based upon a continuum ...
N. Bay +3 more
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Bond Strength of Bonded SOI Wafers
Japanese Journal of Applied Physics, 1992We developed a tensile strength measurement technique for bonded silicon-on-insulator (SOI) wafers. After oxidation, wafers are patterned, prior to bonding, to reduce the bonded area. After bonding and grinding, tensile strength is measured by pulling samples perpendicularly to the interface by holders adhesively fixed to the samples. The strength
Fumitoshi Sugimoto Fumitoshi Sugimoto +1 more
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2005
The ability of the clinician to bond restorative materials to enamel has been an important achievement of modern dentistry. A variety of restorative materials that rely on enamel bonding are now available to the clinician. These materials include resin composites, compomers, hybrid ionomers, and glass ionomers.
J.M. Powers, W.H. Tate
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The ability of the clinician to bond restorative materials to enamel has been an important achievement of modern dentistry. A variety of restorative materials that rely on enamel bonding are now available to the clinician. These materials include resin composites, compomers, hybrid ionomers, and glass ionomers.
J.M. Powers, W.H. Tate
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Debonding test method to evaluate bond strength between UHPC and concrete substrate
, 2020M. Valipour, K. Khayat
semanticscholar +1 more source
Journal of Chemical Education, 1973
Students are not generally made aware of the extraordinary magnitude of the strengths of chemical bonds in terms of the forces required to pull them apart. Molecular bonds are usually considered in terms of the energies required to break them, and we are not astonished at the values encountered.
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Students are not generally made aware of the extraordinary magnitude of the strengths of chemical bonds in terms of the forces required to pull them apart. Molecular bonds are usually considered in terms of the energies required to break them, and we are not astonished at the values encountered.
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TDS: Bond Nature and Bond Strength
2014TDS features and work function change coincidently demonstrate four-stage bond forming kinetics and associated valence charge relaxation. The four stages include the following: (1) O1− formation, (2) O1− transition O2− with sp-orbit hybridization, (3) tetrahedron relaxation, and (4) dipole annihilation upon oxygen overdosing.
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