Results 201 to 210 of about 10,287 (255)
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Dentin permeability, dentin sensitivity, and treatment through tubule occlusion
Journal of Endodontics, 1986The hydrodynamic theory of dentin sensitivity states that movement of tubule contents or tubule fluid, in either direction, causes dentin sensitivity. A corollary of that theory is that anything that can decrease dentinal fluid movement or dentin permeability should decrease dentin sensitivity.
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Permeability Effects of Two Dentin Adhesive Systems
Journal of Esthetic and Restorative Dentistry, 1992This in vitro study evaluated the effects of two dentin adhesive systems on dentin permeability. The XR‐Bonding System modifies the smear layer but does not open dentinal tubules. The Kanca or “total‐etch” technique (phosphoric acid, Tenure A and B, Scotchbond 2 Adhesive) removes the smear layer and opens dentinal tubules.
S E, Hansen, E J, Swift, K V, Krell
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Dentinal Permeability in Assessing Therapeutic Agents
Dental Clinics of North America, 1990The measurement of dentinal permeability has been useful in confirming the mechanism of the hydrodynamic hypothesis for pain transmission in hypersensitive patients, has advanced our understanding of how neural agents can reach the pulpal nerves, and has provided useful data to compare and evaluate therapeutic agents.
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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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Dentin permeability to bacterial proteins in vitro
Journal of Endodontics, 1994Passage of bacterial components through dentin is a subject of recent research with in vitro as well as with in vivo models. Diffusive transport of Porphyromonas gingivalis ATCC 33277 proteins has been demonstrated by the authors with an in vitro setup closely simulating the pulp chamber. The purpose of this investigation was to study the filtration of
E, Pissiotis, L S, Spångberg
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Dentin permeability: Effects of smear layer removal
The Journal of Prosthetic Dentistry, 1981The results of this study permit the following conclusions: 1. The use of dilute (6%) citric acid for very short time intervals permits sequential removal of the smear layer on human dentin. 2. Acid-etching for as little as 5 seconds removes much of the smear layer and exposes the orifices of dentinal tubules. 3.
D H, Pashley, V, Michelich, T, Kehl
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Effect of dentin conditioning on dentin permeability and micro‐shear bond strength
European Journal of Oral Sciences, 2007The purpose of this study was to compare fluid flow rates across dentin surfaces treated with four conditioners. The effect of conditioning on the micro‐shear bond strengths of glass ionomer cement (Fuji IX GP) and resin‐based adhesives (Single Bond 2 or Clearfil SE Bond) were also investigated.
Messer, HH +3 more
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Effects of two disinfection/sterilization methods for dentin specimens on dentin permeability
Clinical Oral Investigations, 2018To investigate the effects of two disinfection/sterilization methods on the permeability of dentin specimens.Forty intact human third molars were freshly extracted and cut, close to the pulp chamber, into dentin disks with a 500-μm thickness. The disks were randomized (n = 20 each) into a 70% ethanol group (acid-etched dentin disks soaked in 70 ...
Ruodan, Jiang, Yongxiang, Xu, Hong, Lin
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The effects of a multi-step dentin bonding system on dentin permeability
Dental Materials, 1988Abstract Composite resin was bonded to dentin of crown segments using the multi-step Bowen bonding method. The permeability of the crown segments was measured before and after each step of the procedure to determine their effects on dentin permeability. Treatment of dentin smear layers with ferric oxalate alone reduced dentin permeability by 65%. The
D H, Pashley +4 more
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Dentin permeability: sealing the dentin in crown preparations.
Operative dentistry, 1992Provisional restorations of full crown preparations may permit more microleakage of bacteria and their products than the final castings do. However, most investigations of the sealing qualities of cemented castings have reported that they too permit dye leakage.
E L, Pashley +5 more
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