Results 161 to 170 of about 341,082 (213)
Effect of conditioners on dentin permeability using an impedance method
Journal of Dentistry, 2002 International audienceObjectives. The aim of our in vitro study was to contribute to an elaboration of a protocol to evaluate the permeability of dentin and the effect of different acid conditioners by means of the electrochemical impedance technique ...
Pierre Colon
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Permeability of demineralized dentin to HEMA
Dental Materials, 2000The objectives of this study were to develop a macromodel of the demineralized layer of dentin that is formed after acid-etching, and to determine if the amount of HEMA uptake was responsive to air drying. The hypothesis that was tested was that HEMA uptake by demineralized dentin depends upon the degree of expansion of the collagen fibril network ...
D H, Pashley +5 more
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The relationship between dentin bond strengths and dentin permeability
Dental Materials, 1989The relationship between dentin permeability and the shear bond strength of Scotchbond/Silux was investigated. In the presence of a smear layer, there was no correlation between dentin permeability and dentin bond strengths. After removal of the smear layer with acids, there was an inverse relationship between dentin permeability and dentin bond ...
L, Tao, D H, Pashley
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Dentin permeability of carious primary teeth
Nigerian Journal of Clinical Practice, 2017Many in vitro studies have used dentine permeability to evaluate the efficacy of various restorative and preventative procedures. The easiest way to evaluate dentine permeability is to calculate its hydraulic conductance (Lp) using fluid filtration methods.
Ozkorucuklu, S. +2 more
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Effect of Dycal® on dentin permeability
Dental Traumatology, 1988Abstract The ability of 3 formulations of a hard‐setting calcium hydroxide‐containng base material (Dycal®) to seal dentinal tubules was evaluated in an in vitro model. The latest light‐cured generation of the material was clearly superior to the previous formulations at all time periods tested.
L, Tao, J M, Reynolds, D H, Pashley
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In vitro cytotoxicity and dentin permeability of HEMA
Journal of Endodontics, 1996An in vitro diffusion chamber was used to measure the diffusion of 2-hydroxyethyl methacrylate (HEMA) through etched human dentin disks. Concentrations of HEMA, which diffused through dentin, were measured by ultraviolet spectroscopy, and the effect of initial HEMA concentration, dentin thickness, and back pressure on diffusion were assessed.
Bouillaguet S +4 more
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Dentin Permeability: Determinants of Hydraulic Conductance
Journal of Dental Research, 1978A technique is described which permits measurement of the ease with which fluid permeates dentin. This value, the hydraulic conductance of dentin, increased as surface area increases and/or as dentin thickness decreases. It increased 32-fold when dentin was acid etched due to removal of surface debris occluding the tubules.
O W, Reeder +3 more
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The permeability of artificial dentine carious lesions
Archives of Oral Biology, 2008This study aimed to verify whether two demineralisation solutions, with different fluoride concentrations, would produce subsurface lesions in dentine, as assessed by microradiography, with different mineral loss profiles and, subsequently, to determine the dentine permeability of the two altered tissues.Forty-five human coronal portions were prepared ...
Elgalaid, T. O. +3 more
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Dentine permeability and its role in the pathobiology of dentine sensitivity
Archives of Oral Biology, 1994The classical hydrodynamic theory implicated fluid movement as a transducing mechanism in the production of dental sensitivity. This theory assumes that sensitive dentine must be permeable. Various measurements of dentine permeability are discussed, including: (1) factors that influence diffusive permeation across dentine; (2) factors that influence ...
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Regional variability in the permeability of human dentine
Archives of Oral Biology, 1987This was measured qualitatively by using dyes and quantitatively by hydraulic conductance in dentine discs and crown segments in vitro. Both types of preparation demonstrated large regional differences in permeability, with the highest values at the periphery and the lowest in the centre of the disc or crown.
D H, Pashley +4 more
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