Results 151 to 160 of about 4,270 (180)

Fluid flow through cat dentine in vivo

Archives of Oral Biology, 1992
An outward flow of fluid through exposed dentine was demonstrated in anaesthetized cats. The flow was measured by observing the movement of the fat droplets of dilute milk in a glass capillary (i.d. 30 microns) with a microscope. The capillary was sealed to the dentine with a plastic cap.
N, Vongsavan, B, Matthews
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Fluid movement in human dentine

Archives of Oral Biology, 1965
Abstract To investigate fluid movement in dentine and a possible relationship between this movement and odontoblast aspiration, a chamber was designed which allowed microscopic observation of an exposed dentine surface, in vitro, while this surface was being subjected to reduced pressure.
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In-vivo fluid movement across dentine in the dog

Archives of Oral Biology, 1981
Abstract Conical chambers were cemented to dentine and connected via micropipettes to a pressure bottle to permit measurement of the rate of fluid movement across dentine under positive or negative hydrostatic pressures. Connecting the chamber to a pressure transducer permitted measurement of intra-pulpal tissue pressure through intact dentine, which
D H, Pashley, R, Nelson, E L, Pashley
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Evaluation of dentinal fluid flow behaviours: a fluid-structure interaction simulation

Computer Methods in Biomechanics and Biomedical Engineering, 2013
This study uses the fluid-structure interaction (FSI) method to investigate the fluid flow in dental pulp. First, the FSI method is used for the biomechanical simulation of dental intrapulpal responses during force loading (50, 100 and 150 N) on a tooth. The results are validated by comparison with experimental outcomes.
Kuo-Chih, Su, Shu-Fen, Chuang, Eddie Yin-Kwee, Ng, Chih-Han, Chang   +3 more
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Dentine hypersensitivity: the measurement in vitro of streaming potentials with fluid flow across dentine and hydroxyapatite

Journal of Periodontal Research, 1993
Stimulus transmission across dentine, in conditions such as dentine hypersensitivity, is considered to occur via a hydrodynamic mechanism. This fluid flow in dentine may then induce a mechanoreceptor response in pulpal nerves. However, when fluid flows through a porous structure electrical potentials are also generated.
H, Griffiths, G, Morgan, K, Williams, M, Addy   +3 more
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Regional resistances to fluid flow in human dentine in vitro

Archives of Oral Biology, 1978
Abstract The resistance to fluid movement through dentine was analysed in terms of 3 resistances placed in series: (1) surface resistance due to the presence of debris occluding dentinal tubules, (2) an intratubular resistance due to mineralized nodules and internal irregularities within the tubules, (3) a pulpal resistance due to the presence of ...
D H, Pashley, M J, Livingston, J D, Greenhill   +2 more
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Minimizing Dentinal Fluid Flow Associated with Gap Formation

Journal of Dental Research, 2006
The relationship between gap formation and outward fluid flow and procedures to minimize both phenomena were investigated in extracted human premolars restored in vitro with MOD composite restorations. We hypothesized that either glass-ionomer cement (GIC) liners or low-shrinkage composite could reduce fluid flow related to gap formation.
D N, Ratih, J E A, Palamara, H H, Messer
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Odontoblast aspiration and fluid movement in human dentine

Archives of Oral Biology, 1967
Abstract To investigate further a possible relationship between odontoblast aspiration and fluid movement in dentine, axial coronal dentine was exposed by disk cut and fracture and subjected to reduced pressure in vitro . Sections showed that odontoblast aspiration had occurred into dentine, the peripheral part of which had been exposed by fracture,
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Self-contamination of deep dentin by dentin fluid.

American journal of dentistry, 2002
To compare, with the use of a resin replica technique, surface features of deep, acid-conditioned dentin from vital human molars that were anesthetized with an anesthetic: Group 1: without a vasoconstrictor (Mepivacaine 3%), and Group 2: containing a vasoconstrictor (Lidocaine 2% with 1:80,000 epinephrine).10 Class I cavities with dentin caries were ...
Itthagarun, A, Tay, FR
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Dentine phosphoproteins in gingival crevicular fluid during root resorption

The European Journal of Orthodontics, 2004
External apical root resorption is a common, yet unexplained, phenomenon associated with orthodontic treatment. Available methods of clinical evaluation are radiographic. Biochemical assays offer the advantage of being non-invasive, as well as being diagnostic and potentially prognostic.
James, Mah, Neelanjani, Prasad
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