Abstract:
OBJECTIVES:An optimisation of the mixing ratio of an encapsulated glass-ionomer restorative in terms of compressive strength, working characteristics and pore distribution following mechanical mixing with different mixing machines was undertaken. METHODS:Mean compressive fracture strengths, standard deviations and associated Weibull Moduli (m) were determined from series of 30 encapsulated specimens with varying powder/liquid mixing ratios. Working characteristics were assessed using an oscillating rheometer and scanning electron microscopy and image analysis was used to investigate the influence of the mixing ratios and mixing regime on the pore distribution. RESULTS:Cement mixing regime or reducing the powder/liquid mixing ratio did not have any significant influence on the compressive strength. Utilising the one-way ANOVA and Tukey test comparisons at P<0.05 the cement manipulation regime significantly increased the compressive strength on increasing the powder content of the capsule by 10% (G110) when a combination of rotational and centrifugal action rather than vibration were employed. Utilising a Rotomix at a powder content of G110 was beneficial in reducing porosity levels within the restorative investigated compared with a conventional mixing machine. Increasing the powder content reduced the working characteristics regardless of the mixing regime. SIGNIFICANCE:The increased reliability of encapsulated restoratives reported in the literature following mixing with a combination of rotational and centrifugal compared with vibrational action was only evident when the powder content of the restorative under investigation was increased by 10%. The finding suggests that the initial viscosity of the cement mass of the Ketac Fil Plus Aplicap as supplied by the manufacturer may not have been optimised.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Fleming GJ,Kenny SM,Barralet JEdoi
10.1016/j.jdent.2005.05.008keywords:
subject
Has Abstractpub_date
2006-02-01 00:00:00pages
155-63issue
2eissn
0300-5712issn
1879-176Xpii
S0300-5712(05)00115-6journal_volume
34pub_type
杂志文章abstract:OBJECTIVES:Inhibition of hybrid layer degradation, for example via inhibition of matrix-metallo-proteinases (MMP) could reduce risk of retention loss and failure of adhesively placed restorations. This systematic review investigated such inhibitory pretreatment qualitatively and via meta- and trial-sequential-analysis....
journal_title:Journal of dentistry
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jdent.2016.04.007
更新日期:2016-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the content of inorganic particles and the flexural strength of new condensable composites for posterior teeth in comparison to hybrid conventional composites. METHOD:The determination of the content of inorganic particles was performed by mass weighing of a polymerized composite before and after...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(03)00049-6
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVES:To carry out a systematic review and meta-analysis of studies that investigated changes in perceived quality of life following vital tooth bleaching. METHODS:Online searches (Medline, PubMed, the Cochrane database of systemic reviews and Google scholar), bibliographic, and manual searches were carried out. ...
journal_title:Journal of dentistry
pub_type: meta分析
doi:10.1016/j.jdent.2019.03.007
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVES:To review the established and novel methods of plaque quantification employed in dental research, including a discussion of their merits and to present a new method of planimetrically measuring plaque using light induced fluorescence. METHOD:Quantitative light-fluorescence (QLF) images were acquired from th...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2004.10.017
更新日期:2005-03-01 00:00:00
abstract:OBJECTIVES:To investigate the potential use of swept-source optical coherence tomography (SS-OCT) as a new tool to evaluate marginal adaptation of composite restorations in class I cavities. METHODS:Round-shaped class I cavities (3mm diameter × 1.5mm depth) were prepared on buccal enamel of bovine teeth with cavity fl...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2011.01.011
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVES:To evaluate the effect of addition of zinc oxide and copper nanoparticles (ZnO/CuNp) into universal adhesives, on antimicrobial activity (AMA), cytotoxicity (CTX), water sorption (WS) and solubility (SO), microhardness (MH) and in vitro degree of conversion (DC), as well as resin-dentin microtensile bond str...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2019.01.012
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVES:Evaluate color and translucency of both non-colored and colored zirconia ceramics and compare them with corresponding properties of human dentine. METHODS:0.5mm thick samples of human (MSHD) and bovine (MSBD) dentine were obtained from 5 extracted human anterior maxillary teeth and 5 bovine incisors, respec...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2012.08.018
更新日期:2012-12-01 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: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:OBJECTIVE:The purpose of this study was two-fold: (1) to monitor bacterial biofilm formation and bacteria-induced demineralization of dentine in situ by using electrochemical impedance spectrum (EIS); (2) to examine the relationship between EIS findings and changes in the chemical composition and ultrastructure of dent...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.09.013
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to assess the clinical performance of a direct placement gallium alloy sealed with an established dentine adhesive system. In addition, microanalysis of a few gallium restorations that failed in clinical service was performed. Clinical factors such as pulpal sensitivity, fract...
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(99)00051-2
更新日期:2000-02-01 00:00:00
abstract:OBJECTIVES:Some studies have been conducted to evaluate the effect of different topical fluoride regimens on the remineralization of initial carious lesions. This study was conducted to compare the effects of 3 topical fluoride treatments on the surface microhardness, fluoride uptake, and fluorescence lesion area in en...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.10.002
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to compare the in-vitro caries inhibition of two polyacid-modified composite resins (PMCRs). METHODS:Three standardized class V cavities were prepared in eight extracted human molar teeth. Two of these cavities in each tooth were restored with Compoglass and Dyract according to man...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(96)00091-7
更新日期:1998-03-01 00:00:00
abstract:OBJECTIVES:The purpose of the study was to evaluate the intra- and inter-examiner variability of a panel of examiners using a 'glance and grade' marking system when assessing Class II preparations. METHODS:The examination panel consisted of five university staff with varying clinical and teaching experience. The panel...
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: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: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
abstract:OBJECTIVES:To investigate the influence of matrix and filler content on degradation resistance of an experimental pure-ormocer and an dimethacrylate-based composite derived from a commercially available material. MATERIALS AND METHODS:A dimethacrylate- Grandio (GR) and a model pure ormocer-based-matrix ORMOCER (ORM) w...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2011.10.012
更新日期:2012-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to compare the behavior of two new, low-shrinkage hybrid composites (Aelite LS and Inten-S) with a microfilled (Heliomolar) and a hybrid composite (Filtek Z250), in terms of polymerization contraction stress and microleakage. METHODS:Maximum contraction stress after 10 min was recor...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2004.01.014
更新日期:2004-07-01 00:00:00
abstract::Some laboratory tests of impression material accuracy mimic the clinical situation (simulatory) while others attempt to quantify a material's individual properties. This review concentrates on simulatory testing and aims to give a classification of the numerous tests available. Measurements can be made of the impressi...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/0300-5712(92)90117-u
更新日期:1992-04-01 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:The demand for restoration of root dentine defects such as cervical erosion and root caries has significantly increased recently, but there is limited information on the performance of the adhesive resins to radicular dentine. The purpose of this study was to measure the regional tensile bond strength (TBS) ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(95)00102-6
更新日期:1996-11-01 00:00:00
abstract:OBJECTIVE:The aim of this in vivo study was to investigate the influence of age on optical properties of pure enamel and enamel-dentine complex. METHODS:A spectrophotometric study was performed on two different age groups: young (10-35 years old) and adult (36-60 years old). In both groups, the tooth's total area of t...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2013.09.005
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVES:To determine the correlation between fracture toughness and leucite content in dental porcelains. The mechanisms by which leucite influences the fracture toughness of dental porcelains were also investigated. METHODS:Six porcelains were tested: A (Ceramco I/Dentsply), B (Ceramco II/Dentsitply), C (Finesse/D...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2005.02.001
更新日期:2005-10-01 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 evaluate the alterations of etched deciduous dentin when submitted to different time and concentrations of sodium hypochlorite (NaOCl), using scanning electron microscopy (SEM). MATERIAL AND METHODS:Forty deciduous anterior teeth were selected, cleaned and ground until expose a f...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2005.10.003
更新日期:2006-08-01 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: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
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.11.003
更新日期:2010-03-01 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::This paper addresses three main themes: (1) oral health and frailty; (2) interprofessional healthcare teams; and (3) dental professionals on healthcare teams. Oral diseases exacerbate frailty, are rampant in most long-term care (LTC) facilities, and typically are not managed effectively by the medical and nursing staf...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/j.jdent.2011.10.017
更新日期:2011-12-01 00:00:00