Abstract：
OBJECTIVES:Purpose of this study was to determine the influence of grey-scale reversal of digital radiographic images on the detection of proximal caries. METHODS:Five observers assessed digital bitewing radiographs (Sidexis((R)), Sirona) of 320 unrestored surfaces of extracted posterior teeth embedded in 20 models, simulating pairing of maxillary and mandibular arches, using a six-category caries rating scale. Images were displayed in normal [N] and inverse [IN] mode at different image sizes (display ratio: 1:1, 1:2, 1:7) on a cathode-ray tube monitor (Nokia 446 XS) and a TFT display (Panasonic LC 50 S). Validation standard was defined as histological lesion depth. Validity was expressed as areas under receiver operating characteristic curves (AUC) calculated for two levels of histological caries penetration: presence of caries and presence of a dentine lesion. The factors 'inverse display', 'image size on-screen' 'display type' and 'disease cut-off' were analysed by repeated measures ANOVA. RESULTS:Inverse image display significantly influenced the diagnostic validity (P=0.014), but a reduced accuracy was only seen at the lowest image size (AUC (SE): [N] 0.64 (0.02); [IN] 0.62 (0.02)). At the validation threshold 'dentine caries' approximal caries detection deteriorated when using grey-scale reversal (AUC (SE): [N] 0.71 (0.02); [IN] 0.69 (0.02)). CONCLUSIONS:In conclusion, grey-scale reversal of digital radiographs did not optimise approximal caries detection and aggravated the detectability of dentinal lesions.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Haak R,Wicht MJdoi
10.1016/j.jdent.2004.08.003keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
65-71issue
1eissn
0300-5712issn
1879-176Xpii
S0300-5712(04)00129-0journal_volume
33pub_type
杂志文章abstract：PURPOSE:Develop a methodology to correlate microtensile bond strength (microTBS) and leakage within the same site of a specimen and evaluate the predominate debond and leakage pathways. MATERIALS AND METHODS:A Class II (MO) slot cavity was prepared in 37 extracted human molars and restored with indirect resin composit...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(00)00065-8
更新日期：2001-02-01 00:00:00
abstract：OBJECTIVES:Systemic conditions may affect host susceptibility, disease progression and severity as well as treatment response. Previously, low oestrogen (E(2)) levels were associated with increased bone resorption, due to increased osteoclastogenesis and decreased osteoclast apoptosis. Osteoprotegerin (OPG) is an essen...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2012.01.013
更新日期：2012-05-01 00:00:00
abstract：:The purpose of this study was to evaluate the effect of a coaxial carbon dioxide/neodymium:yttrium aluminium garnet laser beam on enamel surface roughness and the dental pulps of mongrel dogs. In four dogs, four maxillary left posterior teeth were irradiated at 16 cm source-tooth distances. Two teeth were irradiated w...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(91)90095-g
更新日期：1991-04-01 00:00:00
abstract：OBJECTIVES:Functionalised silica sub-micron particles are being investigated as a method of delivering antimicrobials and remineralisation agents into dentinal tubules. However, their methods of application are not optimised, resulting in shallow penetration and aggregation. The aim of this study is to investigate the ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2016.11.006
更新日期：2017-01-01 00:00:00
abstract：OBJECTIVES:Root canal treatment forms an essential part of general dental practice. Sodium hypochlorite (NaOCl) is the most commonly used irrigant in endodontics due to its ability to dissolve organic soft tissues in the root canal system and its action as a potent antimicrobial agent. Although NaOCl accidents created ...
journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/j.jdent.2013.08.012
更新日期：2013-11-01 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:Secondary caries at the tooth-restoration margins is a primary reason for restoration failure. Cracks at the margins lead to leakage which can trap bacteria, producing acids to cause caries. To date, there has been no report on developing an adhesive resin that has self-healing, antibacterial and remineraliz...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2018.05.009
更新日期：2018-08-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to investigate the influence of shortening the etching time on the bond strength of a conventional and a self-etching primer adhesive system used in primary tooth dentin. METHODS:Flat dentin surfaces were obtained from 24 primary molars, randomly assigned to 4 experimental groups. T...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2004.10.011
更新日期：2005-05-01 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 aim of this study was to evaluate the internal adaptation and marginal properties of ceramic laminate veneers fabricated using pressable and machinable CAD/CAM techniques. MATERIALS AND METHODS:40 ceramic laminate veneers were fabricated by either milling ceramic blocks using a CAD/CAM system (group 1 n...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2012.04.019
更新日期：2012-08-01 00:00:00
abstract：OBJECTIVES:To monitor zirconia-ceramic and metal-ceramic posterior FDPs with respect to survival and technical/biological complication rates. MATERIALS AND METHODS:Fifty-eight patients received 76 3- to 5-unit posterior FDPs. The sites were randomly assigned to 40 zirconia-based (ZC) and 36 metal-based (MC) FDPs. FDPs...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2018.05.015
更新日期：2018-09-01 00:00:00
abstract：OBJECTIVES:The bonding of acrylic resin to dental prostheses constructed from metal has been the subject of extensive research in recent years, much of it between base-metal alloys such as Ni-Cr alloys and dental composite. The development of techniques for the manufacture of dental appliances from titanium and titaniu...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(96)00051-6
更新日期：1997-09-01 00:00:00
abstract：OBJECTIVES:The use of thio-urethane oligomers has been shown to significantly improve the mechanical properties of resin cements (RCs). The aim of this study was to use thio-urethane-modified RC to potentially reinforce the porcelain-RC structure and to improve the bond strength to zirconia and lithium disilicate. MET...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2018.04.002
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to investigate the effect of tooth age on colour adjustment potential of resin composite restorations in human teeth. METHODS:Twenty extracted human premolars with an A2 shade, extracted for orthodontic reasons from younger patients (20-28yrs) (younger teeth) and periodontal re...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2014.09.007
更新日期：2015-02-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to evaluate the effects of a home bleaching gel containing 15% carbamide peroxide on the surface microhardness of four tooth-colored restorative materials in situ. METHODS:Four types of tooth-colored restorative materials, including a nanocomposite resin (Filtek Z350), a packab...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2008.01.008
更新日期：2008-04-01 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:This study explored different pathways by which social position and social ties influence adult's oral health over a 13-year period. METHODS:A cohort investigation (Pro-Saúde Study) was conducted of non-faculty civil servants at a university in Rio de Janeiro, Brazil (N=1613). Baseline data collected in 199...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2015.12.004
更新日期：2016-01-01 00:00:00
abstract：OBJECTIVES:This study concerned the temperature and linear dimensional change of heat-cured acrylic resin in the two-stage processing technique for complete dentures. METHODS:Thermocouples were incorporated in the acrylic resin for recording temperatures. Measurements between reference marks were made by a high-resolu...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(95)91190-x
更新日期：1995-08-01 00:00:00
abstract：OBJECTIVES:To determine the influence of two enamel conditioning techniques on buccal and lingual tooth surfaces at two different times on debonding strength and tooth damage. METHODS:The study included 50 premolars. Buccal and lingual surfaces of 10 teeth were scanned using SEM before (N=4) and after enamel condition...
journal_title：Journal of dentistry
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/j.jdent.2004.08.005
更新日期：2005-02-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to examine the behavior of posterior teeth restored with single-tooth restorations with intentionally high occlusal contacts. METHODS:Consent was obtained from 17 patients who were seen a total of 5 times over 3.5 years. The restorations placed were all full occlusal coverage gold r...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2015.11.006
更新日期：2016-02-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to determine whether conventional black tea and a herbal tea were capable of eroding dental enamel. A further aim was to investigate whether herbal tea of the type tested eroded dental hard tissues to a greater or lesser extent than conventional black tea. METHODS:Three groups of 2...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(01)00044-6
更新日期：2001-11-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to compare four finishing/polishing systems (F/P) on surface roughness and gloss of different resin composites. METHODS:A total of 40 disc samples (15 mm × 3 mm) were prepared from a nanofill - Filtek Supreme Plus (FS) and a micro-hybrid resin composite - Esthet-X (EX). Following 2...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2011.01.006
更新日期：2011-07-01 00:00:00
abstract：INTRODUCTION:Quantification of collagen degradation is an important parameter to evaluate dentin caries progression or the efficacy of caries prevention aid. The aim of this study was to validate the simple light microscopic technique (LM) to evaluate collagen degradation by comparing with hydroxyproline assay techniqu...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2016.01.001
更新日期：2016-04-01 00:00:00
abstract：BACKGROUND:Untreated dental caries in children remains a public health challenge in poor communities. OBJECTIVES:This prospective controlled clinical trial investigated the effectiveness of a new anti-caries agent, Nano Silver Fluoride (NSF), applied once a year to arrest caries in children. METHODS:One hundred thirt...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2014.05.017
更新日期：2014-08-01 00:00:00
abstract：OBJECTIVES:A low pH environment is created by cariogenic bacteria. This study was aimed to measure pH of carious lesions intraorally using a micro-pH sensor, and assess predominant acid-producing cariogens by qPCR to differentiate caries activities. METHODS:103 dentine lesions classified as active or arrested caries b...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2011.12.013
更新日期：2012-03-01 00:00:00
abstract：OBJECTIVES:The study aims at demonstrating the feasibility of a novel type of coupling-agent-free resin composite based on nano-porous fillers. METHODS:The fillers were obtained by ball-milling anodic alumina membranes. Composites were prepared with standard resin at maximum loading of 50% by weight. The resin matrix ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.12.001
更新日期：2014-03-01 00:00:00
abstract：OBJECTIVES:Midterm-evaluation of a 5-year prospective clinical splitmouth-investigation on survival rate and long-term behavior of all-ceramic partial coverage restorations (PCRs) on molars. Pressed ceramic and CAD/CAM fabricated PCRs were compared. METHODS:80 vital molars of 25 patients were restored with all-ceramic...
journal_title：Journal of dentistry
pub_type： 临床试验,杂志文章
doi：10.1016/j.jdent.2009.04.006
更新日期：2009-08-01 00:00:00
abstract：OBJECTIVES:To compare the lifetime of Y-TZP/porcelain crowns under three different load conditions using step-stress accelerated lifetime testing. METHODS:The Y-TZP frameworks were milled using CAD/CAM, veneered with a porcelain and cemented onto dentine analogue dies. Specimens were divided according to the occlusal ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2015.01.012
更新日期：2015-04-01 00:00:00
abstract：OBJECTIVES:The objective of this study was to investigate the corrosion resistance of the prototype iron-platinum (FePt) magnets and non-encapsulated neodymium-iron-boron (NdFeB) magnets in three different pH environments. METHODS:The corrosion resistance of the magnets was studied using a corrosion indicator, the bre...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2004.02.007
更新日期：2004-08-01 00:00:00
abstract：OBJECTIVES:Methacrylic compounds such as 2-hydroxyethyl methacrylate (HEMA), triethylene glycol dimethacrylate (TEGDMA) and bisphenol A glycerolate (1 glycerol/phenol) dimethacrylate (Bis-GMA) are largely present in auto- or photopolymerizable composite resins. Since the polymerization reaction is never complete, these...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2006.07.008
更新日期：2007-03-01 00:00:00
