Abstract：
OBJECTIVES:In some studies gap formation has been evaluated in just one section of the restorative. This in vitro study aimed to design a quantitative three-dimensional method for evaluation of the contraction gap in restoratives. METHODS:Cervical cavities were prepared on buccal, palatal or lingual surfaces in human extracted molars and were then filled with resin composites. Specimens were reduced every 100 microm in a direction parallel to the tooth axis, and perpendicular to the cavity floor from one proximal side to the other. The sequence of reducing the sections by 100 microm, image taking (250x) and observation of these images (maximal 2500x) were repeated. Three-dimensional images of the contraction gap were made using analytical software and the proportions of the interface with gap formation calculated. RESULTS:The mean proportions of the interface with gap formation of the self-etching system (Clearfil Liner Bond II Sigma) was 41.7+/-6.3% and that of the self-priming system (Single Bond) was 38.2+/-3.9%; there was no significant difference. CONCLUSIONS:Approximate three-dimensional images of the in vitro contraction gap could be drawn and the mean proportions of the interface with gap formation could be more precisely calculated than by previous methods.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Iwami Y,Shimizu A,Hayashi M,Takeshige F,Ebisu Sdoi
10.1016/j.jdent.2004.10.001keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
325-33issue
4eissn
0300-5712issn
1879-176Xpii
S0300-5712(04)00158-7journal_volume
33pub_type
杂志文章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：OBJECTIVES:To investigate repairs of direct restorations by a group of Dutch general dental practitioners (GDPs) and its consequences on longevity of restorations. METHODS:Data set was based on dental records of patients attending 11 general dental practices (24 Dentists) in the Netherlands. Patients that received Cla...
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
abstract：OBJECTIVES:To measure the shear bond strengths of various luting cements to a sandblasted zirconia ceramic and to determine the surface energy parameters of the luting cements. METHODS:Two conventional glass ionomer cements, two resin-modified glass ionomer cements, two compomer cements, and two adhesive resin cements...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2011.08.012
更新日期：2011-11-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to assess the prevalence of direct restorations in posterior teeth in children aged 12, from a birth cohort, and to test the association between the quality of the restorations and individual variables experienced in the life cycle. METHODS:All live-born children in Pelotas, in 200...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2019.103183
更新日期：2019-10-01 00:00:00
abstract：OBJECTIVE:This study evaluated whether Quantitative Light-induced Fluorescence-Digital (QLF-D) can detect the levels of cariogenicity of dental microcosm biofilms by assessing the red fluorescence intensity. METHODS:Dental microcosm biofilms were initiated from human saliva on bovine enamel discs. Biofilms with variou...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.08.021
更新日期：2013-12-01 00:00:00
abstract：OBJECTIVES:To evaluate the ability of a Near Infrared Light Transillumination (NILT) device to detect non-cavitated approximal caries lesions; and to compare its performance to Digital Radiography (DR). METHODS:Thirty human extracted premolars (sound to lesions into the outer one-third of dentin) were selected. Lesion...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.05.018
更新日期：2017-08-01 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：:The effect of various surface treatments on the shear bond strength of composite resin to a glass-ionomer cement has been studied. Acid etching with phosphoric acid and polyacrylic acid, roughening by way of grinding or air drying, the use of a dentine bonding system and a silane coupling agent were the variables. Aci...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(89)90004-3
更新日期：1989-02-01 00:00:00
abstract：OBJECTIVES:To compare the effect of bioavailable gluconate-chelated stannous fluoride (SnF2) toothpaste with control toothpastes for treatment of dentine hypersensitivity (DH) and enamel erosion. DATA AND SOURCES:A Procter & Gamble Oral Care archive of clinical studies was reviewed from 2000 to 2020. Eligible studies ...
journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/j.jdent.2020.103566
更新日期：2020-12-28 00:00:00
abstract：OBJECTIVES:After removal of dentine caries lesions, cavity lining has been advocated. Non-clinical data support this approach, but clinical data are sparse and ambiguous. We aimed at evaluating the benefits and harms of cavity lining using meta-analysis and Trial Sequential Analysis. DATA:We included randomized clinic...
journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/j.jdent.2015.07.017
更新日期：2015-11-01 00:00:00
abstract：OBJECTIVE:The intent of this project was to evaluate the efficiency of three commercial amalgam separators based on mercury and particle removal. METHODS:Dental wastewater samples were collected from a 54-chair dental clinic and a one chair private dental office. Atomic absorption spectrometry was used to measure merc...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(02)00067-2
更新日期：2003-01-01 00:00:00
abstract：OBJECTIVES:This study aimed to evaluate posterior restorations placed in young adults, investigating the association between social determinants experienced during the life course and the quality of tooth fillings. METHODS:A representative sample (n=720) of all 5914 individuals who were born in Pelotas in 1982 was pro...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.02.010
更新日期：2013-11-01 00:00:00
abstract：OBJECTIVE:Cytokine networks regulate innate and adaptive immune responses, which in turn are recognised to direct the progression or arrest of periodontal disease. This study aimed to compare the profile of seven cytokines, implicated in regulating T-cell networks, in gingival crevicular fluid (GCF) samples with differ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2019.04.009
更新日期：2019-06-01 00:00:00
abstract：OBJECTIVE:To compare the effect of QMix (Dentsply Sirona), 7% maleic acid (MA), and 17% ethylenediaminetetraacetic acid (EDTA) on the microhardness, flexural strength and microstructure of mineral trioxide aggregate (MTA; ProRoot MTA, Dentsply Sirona). METHODS:Forty MTA specimens were divided into four groups: [I] QMi...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.08.018
更新日期：2017-11-01 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: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:This paper reports the findings of a study on the roles of dental nurses in cross-infection control in general dental practices and who were undergoing training for their initial certificate. The research aimed to find out what factors in their vocation gave them satisfaction, what caused stress and the bear...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(95)00094-1
更新日期：1996-09-01 00:00:00
abstract：OBJECTIVES:The aim of this in vivo study was to evaluate the effects of a home-bleaching agent on the color and surface properties of four tooth-colored restorative materials. METHODS:Two composite resins (a nano-hybrid and a packable), a polyacid-modified composite and a conventional glass-ionomer were tested. Specim...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2009.01.003
更新日期：2009-05-01 00:00:00
abstract：OBJECTIVES:The aim of this study was to investigate new dentin bonding agents formulated with 2,3-epithiopropyl methacrylate (ETMA) comonomer blends. METHODS:Synthesis and characterization of ETMA were performed. Adhesive resins with three different ETMA concentrations (0.1, 1 and 10 wt.%) were prepared. To comparison...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2005.11.001
更新日期：2006-08-01 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:this study aimed to synthesize AgNPs from green tea (GT) extract, forming GT-AgNPs, and to coat their surfaces with silica, resulting in light-colored Ag@SiO2 nanoparticles. MATERIALS AND METHODS:particles were characterized and tested for minimal inhibitory concentration (MIC), biofilm formation against St...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2020.103327
更新日期：2020-05-01 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
abstract：OBJECTIVES:To investigate the prevalence of Combination Syndrome, and to investigate if provision of a mandibular removable partial denture has any influence on the prevalence of Combination Syndrome. METHOD:Patients attending Kings College London Dental Institute, Guys Hospital who wore maxillary conventional complet...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2019.01.016
更新日期：2019-03-01 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:To elucidate the impact of surface properties and the release of fluoride from different glass ionomer cements on biofilm formation. METHODS:Standardized specimens manufactured from various classes of glass ionomer cements (GICs), a resin-based composite (RBC), and human enamel were subjected to surface ana...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.02.005
更新日期：2017-05-01 00:00:00
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：OBJECTIVES:The purpose of this study was to determine enamel and dentin bond durability after long-term water storage using self-etch adhesives. METHODS:Two single step self-etch adhesives (SU, Scotchbond Universal and GB, G-ӕnial Bond) and a two-step self-etch adhesive (OX, OptiBond XTR) were used. The shear bond str...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2015.10.018
更新日期：2015-12-01 00:00:00
abstract：AIM:The aim of this study is to report the subsequent treatment provided, over the 11 years' data available, when a re-intervention was considered clinically necessary on a glass ionomer (GI) restoration. METHODS:A detailed sample of treatment records of patients has been established at the Dental Practice Division of...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.07.008
更新日期：2009-01-01 00:00:00
abstract：:The head of a university, especially of a research university, expects a great deal from the dean, and the dean's team, of a dental school. These leaders have to balance an especially complex set of tasks and, in the process, pursue maximum integration into their university. Dental deans should aspire to be at least e...
journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/j.jdent.2019.05.003
更新日期：2019-08-01 00:00:00
abstract：:Clinical experience suggests that severe alveolar bone resorption can limit the success of complete denture wearing. The loss of bone mineral with age occurs throughout the skeleton, which contributes to the high incidence of bone fractures later in life. Women are more commonly affected by some of these fractures. Th...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(89)90141-3
更新日期：1989-04-01 00:00:00
