Results 171 to 180 of about 341,082 (213)

Dentin permeability to bacterial proteins in vitro

Journal of Endodontics, 1994
Passage 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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The permeability of human dentine in vitro and in vivo

Archives of Oral Biology, 2000
Experiments in cats have shown that Evans blue dye diffuses at a greater rate into dentine in recently extracted teeth than in vivo. These experiments have now been repeated in man and similar results were obtained except that, after applications in vivo, visible concentrations of the dye were present in the dentine, and in a few cases, even in the ...
N, Vongsavan, R W, Matthews, B, Matthews
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[The influence of dentin conditioning on permeability of dentin].

Deutsche Stomatologie (Berlin, Germany : 1990), 1992
In this study the influence of four different pretreatments showed significant differences on the permeability of cut dentin. On the average the application of 25% polyacrylic acid increased the permeability by approximately 10 percent, the application of 34% polyacrylic acid by 30 percent.
H G, Schaller, P, Stumbaum, W, Gotze
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The effects of dentin permeability on restorative dentistry

Dental Clinics of North America, 2002
The permeability properties of dentin determine its sensitivity and the degree of pulpal response to restorative procedure materials and microleakage. Most pulpal reactions are due to bacteria or bacterial products that permeate across dentin. These reactions can be prevented if dentin is sealed with resins as soon as it is exposed.
David H, Pashley, Edna L, Pashley, Ricardo M, Carvalho, Franklin R, Tay   +3 more
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The permeability of cat dentine in vivo and in vitro

Archives of Oral Biology, 1991
The apparent impermeability of dentinal tubules to chemicals applied to exposed dentine in vivo was investigated. It was shown that whereas Evans' blue diffused readily into dentine in extracted teeth, it did not do so in visible amounts when it was applied in vivo.
N, Vongsavan, B, Matthews
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Effect of dentin conditioning on dentin permeability and micro‐shear bond strength

European Journal of Oral Sciences, 2007
The 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, Burrow, MF, Palamara, JEA, Banomyong, D   +3 more
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Dentin permeability and dentin sensitivity.

Proceedings of the Finnish Dental Society. Suomen Hammaslaakariseuran toimituksia, 1992
The hydrodynamic theory of dentin sensitivity is based on the premise that sensitive dentin is permeable throughout the length of the tubules. Such a condition may permit the diffusion of bacterial products across dentin to the pulp where they may cause irritation of pulpal soft tissues.
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Dentin permeability: sealing the dentin in crown preparations.

Operative dentistry, 1992
Provisional 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, R W, Comer, M D, Simpson, J A, Horner, D H, Pashley, W F, Caughman   +5 more
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Dentinal Permeability in Assessing Therapeutic Agents

Dental Clinics of North America, 1990
The 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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Effect of dentin desensitizers and dentin bonding agents on dentin permeability.

American journal of dentistry, 2002
To determine the effect of dentin desensitizing agents (oxalates and glutaraldehyde) and dentin bonding agents, with and without resin-based composite (RBC) on dentin permeability and morphology of the dentin surface. The influence of saliva and toothbrushing on these agents was also evaluated.Radicular dentin discs +/-1 mm thick were obtained from ...
P, Jain, J W, Reinhardt, K V, Krell
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