Abstract：
OBJECTIVE:To compare the permeability of the occlusal and the cervical dentinal regions within the same tooth, which represent the bottom of Class I and V cavities, respectively, with two different compositions of perfusion fluid, in vitro. METHODS:An occlusal and a buccal disc were cut from each extracted third molar at a level close to the pulp chamber. The convective permeability of the discs was measured in a fluid transport model using de-ionised water or 1:3 diluted bovine serum and the hydraulic conductance was determined. RESULTS:The mean hydraulic conductance values of the occlusal and the buccal cervical human dentine to water were 0.069 and 0.047 microl min(-1) cm(-2) cm H(2)O(-1), respectively. When diluted bovine serum was used, the corresponding values were 0.036 and 0.012 microl min(-1) cm(-2) cm H(2)O(-1), respectively. Statistical analysis revealed no significant difference between the permeability of these two regions. The composition of the perfusion fluid significantly influenced the permeability of dentine. CONCLUSIONS:The occlusal and the buccal cervical regions of human dentine have similar permeability characteristics in vitro. There is a strong reverse correlation between the viscosity of the perfusion fluid and the perfusion through the dentine.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Ozok AR,Wu MK,Wesselink PRdoi
10.1016/s0300-5712(02)00005-2keywords:
subject
Has Abstractpub_date
2002-02-01 00:00:00pages
107-11issue
2-3eissn
0300-5712issn
1879-176Xpii
S0300571202000052journal_volume
30pub_type
杂志文章abstract：PURPOSE:This study determined the shear bond strength of a nanohybrid composite resin to bleached enamel immediately or 15 days later using different adhesive systems and laser application. METHODS:One hundred and forty enamel specimens were prepared from human molar teeth and bleached either with 16% carbamide peroxi...
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journal_title：Journal of dentistry
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更新日期：2008-04-01 00:00:00
abstract：OBJECTIVES:To determine the phenotypic and molecular characteristics of Enterococcus faecalis recovered from primary endodontic infections in Brazilian patients. METHODS:Twenty isolates of E. faecalis recovered from 43 Brazilian patients with primary endodontic infections were identified by biochemical profiling (API2...
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doi：10.1016/j.jdent.2013.07.004
更新日期：2013-09-01 00:00:00
abstract：OBJECTIVES:Following tooth pulp exposure, pulpal repair is accomplished by dentine bridge secretion by odontoblast-like cells. However, little information is available about the hierarchy of variables, which influence odontoblast-like cell numbers. The purpose of this study was to examine correlations between pulp capp...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(02)00024-6
更新日期：2002-09-01 00:00:00
abstract：OBJECTIVES:To validate a new questionnaire for evaluating the 'Oral aesthetic-related quality of life (OARQoL)' of prosthetically restored patients. 'OARQoL' assesses the impact of the self-perceived dental aesthetics on patients' well-being. METHODS:The 'Quality of Life associated with Dental Aesthetic Satisfaction (...
journal_title：Journal of dentistry
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doi：10.1016/j.jdent.2015.08.010
更新日期：2015-11-01 00:00:00
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doi：10.1016/0300-5712(95)00070-4
更新日期：1996-07-01 00:00:00
abstract：OBJECTIVES:Failure of the enamel adjacent to the defects in teeth with molar incisor hypomineralization (MIH) limits the success rate of the restorations placed in these teeth and this frequently leads to their ultimate extraction. To understand the cause, a state-of-the-art combination of focused ion beam (FIB) and na...
journal_title：Journal of dentistry
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doi：10.1016/j.jdent.2009.11.003
更新日期：2010-03-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/j.jdent.2010.01.002
更新日期：2010-03-01 00:00:00
abstract：:Replacement of pin-retained amalgam restorations is complicated by the loss of prime pin sites and remaining pin sites posing anatomical problems. Self-threading dentine pins can be removed with an ultrasonic handpiece, and the pin site reused with a large pin. Retention of replacement pins is similar to original pins...
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pub_type： 杂志文章
doi：10.1016/0300-5712(93)90109-4
更新日期：1993-10-01 00:00:00
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journal_title：Journal of dentistry
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更新日期：2020-11-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0300-5712(96)00067-x
更新日期：1997-11-01 00:00:00
abstract：OBJECTIVES:Three luting cements based on zinc oxide phosphate, glass ionomer or composite resin were compared with respect to their influence on the anaerobic fermentation of sucrose by human oral bacteria. METHODS:Fifteen standardized samples of each of the three luting cements were prepared according to the manufact...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(98)00027-x
更新日期：1999-01-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(97)00033-x
更新日期：1998-11-01 00:00:00
abstract：OBJECTIVES:Small and hydrophilic monomers as HEMA and TEGDMA can easily penetrate human tissues. For biocompatibility issues it is therefore better to avoid such monomers in dental adhesive formulations. The purpose of this study was (1) to determine the micro-tensile bond strength (muTBS) to enamel/dentin of a HEMA/TE...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.05.012
更新日期：2008-10-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.06.002
更新日期：2017-09-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.04.018
更新日期：2008-09-01 00:00:00
abstract：OBJECTIVE:This study compared the antibacterial activities of two dentin bonding systems (ABF, Kuraray and Reactmer Bond, Shofu) by a conventional agar well technique and a newly designed in vitro test using tooth model. METHODS:In the agar well technique, the test materials were filled in the wells of Muller Hinton a...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(03)00006-x
更新日期：2003-02-01 00:00:00
abstract：OBJECTIVES:To investigate the effectiveness of an indicator gel in revealing exposed dentine. METHODS:Teeth prepared into dentine and then stained with the indicator gel were sectioned for histological examination. RESULTS:The indicator gel was found to stain dentine and thin layers of enamel. CONCLUSION:The gel is ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(94)00010-d
更新日期：1995-12-01 00:00:00
abstract：OBJECTIVES:To investigate the current prevalence of open access (OA) in the field of dentistry, the means used to provide OA, as well as the association between OA and citation counts. METHODS:PubMed was searched for dental articles published in 2013. The OA status of each article was determined by manually checking G...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2016.02.005
更新日期：2016-04-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(97)00030-4
更新日期：1998-09-01 00:00:00
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pub_type： 杂志文章,随机对照试验
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更新日期：2020-05-01 00:00:00
abstract：OBJECTIVE:To investigate whether bleaching prior to placement of a composite veneer had an effect on the final shade of the restoration and whether this was affected by the thickness or shade of the veneer. METHODS:Twenty bovine teeth were collected, sectioned and divided into two groups. One group was the non-bleache...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.04.004
更新日期：2008-07-01 00:00:00
abstract：OBJECTIVES:A meta-analysis was conducted to assess the relationship between parental age and the occurrence of non-syndromic oral clefts. The questions addressed if younger or older mothers and fathers have an increased risk of having a child with non-syndromic oral clefts. DATA:Data from cohort studies, case-control,...
journal_title：Journal of dentistry
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jdent.2011.10.002
更新日期：2012-01-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2012.10.007
更新日期：2013-01-01 00:00:00
abstract：OBJECTIVES:To evaluate the toothbrush wear resistance of infiltrated artificial white spot lesions following two infiltration strategies, and to assess their ultramorphology. METHODS:Flat enamel surfaces from freshly extracted bovine teeth were polished and immersed in a Buskes demineralising solution for 30 days to c...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2011.02.009
更新日期：2011-05-01 00:00:00
abstract：OBJECTIVE:Several studies have made comparisons in the dimensional accuracy of different elastomeric impression materials. Most have used two-dimensional measuring devices, which neglect to account for the dimensional changes that exist along a three-dimensional surface. PURPOSE:The aim of this study was to compare th...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2004.07.005
更新日期：2004-11-01 00:00:00
abstract：OBJECTIVES:Mutans streptococci and Lactobacilli on impressions of teeth and caries tests were used to identify caries prone subjects. METHODS:Twenty-seven dental students were examined for caries initially and after 4 years. At the initial examination plaque index; saliva flow, buffering capacity and lysozyme; sucrose...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.07.004
更新日期：2008-11-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to evaluate the in vitro effectiveness of a new bioglass-containing and two commercial desensitising toothpastes on dentinal tubule occlusion after citric acid challenge or artificial saliva (AS) immersion. METHODS:One hundred dentin discs from human third molars were used. Spe...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2010.01.007
更新日期：2010-05-01 00:00:00
abstract：OBJECTIVES:Dentine modifies pulpward diffusion of monomers leaching from restorative materials. Thus, remaining dentine thickness must be taken into account during in vitro cytotoxicity tests. This in vitro study was designed to determine the influence of dentine permeability on the outcome of a cytotoxicity test. MET...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(98)00019-0
更新日期：1998-07-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to investigate the novel mesocellular siliceous foams (MCF) containing CaCO3 nanoparticles (denoted as CMCF) combined with phosphoric acid could occlude dentinal tubules through the formation of biomimetic crystal barrier. METHODS:Ultrastructures of MCF and CMCF were examined by tr...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2019.02.007
更新日期：2019-04-01 00:00:00
