Abstract:
OBJECTIVES:To measure the denaturation temperature (Td) of demineralised dentine matrix as a function of infiltration with water vs. polar solvents vs. adhesive resins. METHODS:Small discs of normal dentine were completely demineralised in 0.5M EDTA. Dried demineralised specimens were placed in water, methanol, ethanol, acetone, eta-butanol or HEMA. Additional specimens were infiltrated with Prime&Bond NT and polymerised. All specimens sealed in high-pressure pans and scanned using differential scanning calorimetry (DSC). RESULTS:Demineralised dentine saturated with water showed a Td of 65.6 degrees C that increased with saturation by methanol, ethanol, acetone, eta-butanol or HEMA to 148.5 degrees C. These increases in Td were inversely related to the molar concentration of the solvents and to their Hoy's solubility parameter for hydrogen bonding (delta h, p<0.01), as well as directly related to the cube root of their molecular weights (p<0.001). The presence of adhesive resins also increased the Td of demineralised matrices to even higher values depending if the resin bonded dentine was measured after 24h of water storage (166.8 degrees C) or dry (172.7 degrees C) storage. CONCLUSIONS:Solvents and monomers with low delta(h) values (i.e., 100% HEMA) increase the Td of demineralised dentine above that produced by solvents with higher delta h values such as methanol and water.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Armstrong SR,Jessop JL,Winn E,Tay FR,Pashley DHdoi
10.1016/j.jdent.2007.10.003subject
Has Abstractpub_date
2008-01-01 00:00:00pages
8-14issue
1eissn
0300-5712issn
1879-176Xpii
S0300-5712(07)00207-2journal_volume
36pub_type
杂志文章,随机对照试验abstract:OBJECTIVES:to determine the mode of light transmission and its impact on the polymerisation kinetic in modern bulk-fill resin-based composites (B-RBC). MATERIALS AND METHODS:Four low-viscosity methacrylate-based and one high-viscosity ormocer-based B-RBCs were considered. One material was available in three different ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2017.05.017
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVE:This randomized controlled trial compared the survival of glass fibre and cast metal dental posts used to restore endodontically treated teeth with no remaining coronal wall. METHODS:Fifty-four participants (45 women) and 72 teeth were evaluated during a follow-up period of up to 3 years. Teeth were randomly...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2014.02.003
更新日期:2014-05-01 00:00:00
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...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.03.012
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVE:The primary goal is to develop a self-cured polyacid-modified resin composite with good mechanical and rheological properties. To achieve such a goal, the aim of this study is to determine how volume filler fraction (VFF) affects mechanical properties and viscosities of such materials containing different fil...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(03)00091-5
更新日期:2003-08-01 00:00:00
abstract:OBJECTIVES:A priority research area in minimal intervention dentistry is the characterization of the early stages of dental erosion. The aim of this in vitro study was to assess the effect of short, repetitive erosive challenges to human enamel over 2 min at pH 1.5 and 3.0 under conditions simulating gastric regurgitat...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2014.06.011
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVES:The objectives of this study were to: (1) develop a novel multifunctional composite with nanoparticles of silver (NAg), 2-methacryloyloxyethyl phosphorylcholine (MPC), dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP); and (2) investigate biofilm-inhibition ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2018.12.001
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVES:To investigate the effect of impregnation of poly(ethyl methacrylate) and tetrahydro-furfuryl methacrylate (PEM/THFM) polymeric delivery system with chlorhexidine or fluconazole on its shear bond strength (SBS) and water sorption. METHODS:For SBS testing, 16 PEM/THFM discs impregnated with chlorhexidine (CH...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2012.04.027
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVES:To conduct a systematic review and meta-analysis to explore the association between erosive toothwear and gastro-oesophageal reflux disease or symptoms (GERD/S). SOURCES:Electronic searches were performed in Scopus, Embase, and Web of Science databases for the identification of relevant studies, from 1980 u...
journal_title:Journal of dentistry
pub_type: 杂志文章,meta分析
doi:10.1016/j.jdent.2020.103284
更新日期:2020-04-01 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:UNLABELLED:Dental products containing calcium phosphate and fluoride are claimed to enhance enamel remineralization over fluoride products. OBJECTIVES:To compare remineralization of enamel subsurface lesions by dental products with added calcium phosphate in a double-blind, randomized, cross-over in situ study. METHO...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2011.05.002
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to measure the satisfaction of patients with respect to the aesthetics of veneer restorations (VRs) and to identify potential factors influencing their satisfaction. MATERIALS AND METHODS:One hundred and eighty VRs of three different types (direct composite, indirect composite and ...
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:Reattachment of the avulsed enamel-dentine coronal fragment to the remaining tooth structure has become an accepted clinical alternative to a resin composite build-up for the restoration of crown fractured teeth. Since little knowledge exists as to the pulpal response to this procedure, this study was design...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(98)00003-7
更新日期:1998-07-01 00:00:00
abstract:UNLABELLED:The dentistry literature shows consensus to use the Garvie and Nicholson equation modified by Toraya to quantify the Y-TZP phase transformation. However, this method does not include the possibility of cubic phase transformation and crystallographic texture after artificial ageing, and in this case, it is po...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2014.08.010
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVES:Despite increasing evidence supporting selective caries tissue removal, the technique is not adopted by most dentists, one possible reason being that patients might reject it. We aimed to assess patients' preferences for selective versus complete excavation, and to identify predictors of this preference. ME...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2016.01.006
更新日期:2016-03-01 00:00:00
abstract::In the present study Class II resin composite restorations were placed under in vivo and in vitro conditions. For the in vivo part. Class II preparations were cut in teeth destined for extraction for orthodontic reasons. The preparations were completed with the gingival margin in enamel and restored using six differen...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(93)90026-m
更新日期:1993-06-01 00:00:00
abstract:OBJECTIVES:The goal of this study was to evaluate influence of different shade guides and respective shade matching methods on shade matching results and to analyze user satisfaction with these products and methods. METHODS:Eighty-eight pre-doctoral dental students completed the study. The color of four target shade t...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.02.005
更新日期:2009-01-01 00:00:00
abstract:INTRODUCTION:Tooth surface loss (TSL) is an increasingly recognised problem. We are therefore seeing an increase in the number and complexity of in vitro studies investigating factors that modify effects at the tooth surface. AIM:The aim of this paper is to provide a narrative review that illustrates the more commonly...
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::A dental source of infection remains the most common identifiable risk factor in infective endocarditis and this may be particularly important in patients at 'high risk'. We therefore performed a questionnaire survey of dental practitioners to assess acceptance of The British Society of Antimicrobial Chemotherapy (BSA...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(92)90032-8
更新日期:1992-12-01 00:00:00
abstract:OBJECTIVES:To determine at 5 year follow-up the failure rate, wear rates and other aspects of clinical performance of direct composite inlays compared with conventional composite restorations placed incrementally. METHODS:100 matched pairs of restorations were originally entered into the trial. Each pair consisted of ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(00)00013-0
更新日期:2000-08-01 00:00:00
abstract:OBJECTIVE:Bitewing radiographs are the main tool for approximal caries detection. However, interpretation of findings is affected by numerous factors, such as beam angulation, exposure conditions, morphologic variations, etc. The objective of the present study was to compare the ability to detect virtually identical, a...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(95)00111-5
更新日期:1996-11-01 00:00:00
abstract:OBJECTIVES:The aim of this double-blind clinical trial was to assess the longevity of repairs to localized clinical defects in composite resin restorations that were initially planned to be treated with a restoration replacement. METHODS:Twenty-eight patients aged 18-80 years old with 50 composite resin restorations (...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2014.05.015
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVES:Verify the influence of curing methods on contraction stress, stress rate, and degree of conversion (DC) of a restorative composite and on bond strength of composite restoratives. METHODS:For the stress test, composite (0.84 mm thick) was applied between two 5-mm diameter glass rods, mounted in a servohydra...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2006.10.003
更新日期:2007-04-01 00:00:00
abstract:OBJECTIVES:To examine the effect of incorporating arginine in a 5% sodium fluoride (NaF) varnish on its remineralization potential and HGF-1 cytotoxicity. METHODS:Experimental varnishes were prepared using two arginine variants: l-arginine (Arg) and l-arginine monohydrochloride (Arg.HCl) at 2%, 4%, & 8% w/v. with cont...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103411
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVES:This in vivo study compared the antibacterial effect of a self-etch adhesive with and without the brominated monomer 12-methacryloyloxydodecyl-pyridinium bromide (MDPB) on carious dentin after selective caries removal. METHODS:10 patients showing deep primary carious lesions at two posterior teeth without p...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103555
更新日期:2020-12-17 00:00:00
abstract:OBJECTIVES:To evaluate the influence of different surface treatments on the microtensile bond strength of a dual-cured resin composite to fiber posts. METHODS:Thirty-two glass methacrylate-based fiber posts (GC Corp.) were used in the study. Posts were divided into two groups, according to the surface pretreatment per...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2007.01.009
更新日期:2007-06-01 00:00:00
abstract::An even fitting surface is essential to obtain and maintain a healthy oral mucosa in denture wearers. The present study was designed to clarify the relationship between the surface roughness of oral mucosa and its reproduction in the corresponding fitting surface of acrylic dentures. A silicone elastomer/epoxy replica...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(94)90201-1
更新日期:1994-06-01 00:00:00
abstract:OBJECTIVE:To determine the influence of hard and soft splints with two thicknesses on the stress transmission to the tooth supporting the splint and the opposite tooth. METHODS:Continuous vertical forces up to 500N were applied to two opposite first molar phantom teeth using a universal loading machine. Deformation wa...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(00)00026-9
更新日期:2000-09-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to investigate the impact of moderate and severe hypodontia and amelogenesis imperfecta on the quality of life and self-esteem of affected adult patients. METHODS:Forty one adult patients (aged 18-45 years) with clinical and radiological diagnoses of moderate to severe hypodo...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2013.06.004
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:Host modifying factors, such as genetic predisposition, may increase severity of periodontitis. Genetic polymorphisms in interleukin-4 (IL-4) genes seem to influence host response to microbial challenge. Two IL-4 polymorphisms were found in association with asthma and atopy, and later with aggressive periodo...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2003.11.004
更新日期:2004-03-01 00:00:00
abstract:OBJECTIVES:The study evaluated the antibacterial effect of VIOlight (VL) Personal Travel Toothbrush Sanitizer on biofilms after toothbrush exposure to human saliva compared to Listerine Antiseptic (LA), 3% hydrogen peroxide (3%HP) and water. METHODS:Twenty toothbrush heads (n=5/Gp) were immersed in saliva and to allow...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.08.011
更新日期:2010-08-01 00:00:00