Abstract：
OBJECTIVE:The aim of this study was to investigate the influence of a fiber post on the fracture mechanics of zirconia crowns inserted over endodontically treated teeth with different extent of coronal damage. METHODS:Endodontically treated human molars with three types of coronal damage received fiber posts before cementation of zirconia-veneered crowns. Controls received composite resin cores without fiber posts. The specimens were loaded to failure and fractographically examined using a scanning electron microscope (SEM). RESULTS:Statistical analysis revealed that specimens with fiber posts demonstrated significantly higher failure loads and favorable fracture pattern compared to the controls. At fractographic analysis, specimens with fiber posts demonstrated delamination of the veneer ceramic from intact zirconia under structure. Meanwhile, the specimens that were restored without a fiber post demonstrated micro-cracking of the composite core build-up resulting in loss of the support under the zirconia crowns which was responsible for the initiation of radial crack and catastrophic damage. CONCLUSIONS:Within the limitation of this study, the insertion of fiber post improved the support under zirconia crowns which resulted in higher fracture loads and favorable failure type compared to composite core build-up.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Salameh Z,Ounsi HF,Aboushelib MN,Sadig W,Ferrari Mdoi
10.1016/j.jdent.2008.03.014subject
Has Abstractpub_date
2008-07-01 00:00:00pages
513-9issue
7eissn
0300-5712issn
1879-176Xpii
S0300-5712(08)00102-4journal_volume
36pub_type
杂志文章,随机对照试验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...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.07.004
更新日期：2013-09-01 00:00:00
abstract：UNLABELLED:Three types of fiber-reinforced composite (FRC) molar crowns were tested on their fracture resistance and marginal adaptation under simulated oral stress conditions. Two glass fiber systems, one processed with a vacuum/pressure system, the other by manual fiber adaptation, and a polyethylene fiber system wer...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(01)00007-0
更新日期：2001-03-01 00:00:00
abstract：:In a previous study concerning oral function with shortened dental arches, it was found that approximately 10 per cent of the patients investigated complained of impaired masticatory ability despite a substantial reduction in arch length and, as a consequence, food platform area. This finding differs from those of stu...
journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/0300-5712(90)90107-p
更新日期：1990-08-01 00:00:00
abstract：OBJECTIVE:To evaluate the effect of compounds of Galla chinensis on the remineralisation of initial enamel carious lesions in vitro. METHODS:Sixty bovine enamel blocks with early lesions were prepared and randomly divided into six treatment groups. The lesions were subjected to a pH-cycling regime for 12 days. Each da...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2006.11.007
更新日期：2007-05-01 00:00:00
abstract：OBJECTIVES:Males and females differ in their responses to many health conditions and treatments. The aim of this randomized clinical trial was to determine whether there are differences in the way that male and female edentulous elders rate their satisfaction with new mandibular implant overdentures (IODs) and conventi...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2008.02.009
更新日期：2008-05-01 00:00:00
abstract：OBJECTIVES:The objective of the study was to determine the perceptibility and acceptability thresholds for dental ceramics using CIEDE2000 (ΔE(00)) and CIELAB (ΔE(ab)(*)) color difference formulas and a novel TSK Fuzzy Approximation. METHODS:A 13-observer panel performed independent observations of perceptibility and ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2010.07.008
更新日期：2010-01-01 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：:The purpose was to present a descriptive report of the clinical performance of adhesive bridges fitted in a university department of restorative dentistry. The case records of 400 consecutive adhesive bridges fitted between November 1984 and June 1989 in the School of Clinical Dentistry, Queen's University, Belfast we...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(91)90122-f
更新日期：1991-08-01 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：OBJECTIVES:The concept of Cervical Margin Relocation (CMR) consists on placing a base layer of direct resin composite to elevate supra-gingivally the proximal indirect bonded restorations. The aims of this clinical study were to evaluate 1. Bleeding on Probing (BoP) on posterior indirect restorations with one interprox...
journal_title：Journal of dentistry
pub_type： 临床试验,杂志文章
doi：10.1016/j.jdent.2017.10.008
更新日期：2018-02-01 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
abstract：OBJECTIVES:The aim of this study was to investigate the kinetics of protein interactions with a novel hydroxyapatite-polylactide (HA-PLA) composite membrane material. METHODS:Trilayer PLA and HA-PLA composite membranes reinforced with PLA fibres were used to absorb and release protein which was measured by a BioRad as...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2009.06.014
更新日期：2009-11-01 00:00:00
abstract：UNLABELLED:Soy beverages are water extracts of whole soybeans and are often promoted as a healthy alternative to bovine milk. Little analysis has been carried out to determine the effects of soy beverages on oral health, especially their potential acidogenicity. OBJECTIVES:The aim of this study was to determine the po...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2012.05.004
更新日期：2012-09-01 00:00:00
abstract：OBJECTIVES:Previously, we have reported that dental composite incorporating the new monomer methacryloyloxydodecylpyridinium bromide (MDB) showed no release of antibacterial components after being cured but still exhibited antibacterial activity against Streptococcus mutants on its surface. In this study, in order to e...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(95)93576-n
更新日期：1995-06-01 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：OBJECTIVES:The primary cleaning action of powered toothbrushes is the motion of the bristles in contact with the tooth surfaces. The aim of this study was to use scanning laser vibrometry to determine the effects of load and toothpaste on the bristle vibration characteristics of four powered toothbrushes (Oral-B Sonic ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2006.11.006
更新日期：2007-04-01 00:00:00
abstract：OBJECTIVE:The study evaluated the clinical performance and marginal adaptation of direct and semi-direct class II composite restorations in a split-mouth design over 3.5 years. DESIGN:44 upper posterior teeth in 11 adults with primary carious lesions were treated with 22 direct and 22 semi-direct restorations. Convent...
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.2004.11.009
更新日期：2005-07-01 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：OBJECTIVE:The aim of this investigation was to compare the clinical survival rate of all-ceramic FPDs with failures during in vitro simulation. METHODS:40 anterior FPDs were manufactured from lithiumdisilicate ceramic and alumina-oxide ceramic. The FPDs were adhesively bonded to human teeth and artificially aged to in...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.09.001
更新日期：2008-12-01 00:00:00
abstract：OBJECTIVES:This study investigated whether novel liposome formulations loaded with transforming growth factor β1 (TGF-β1) could promote the odontogenic differentiation of human dental pulp stem cells (hDPSCs) for dentine-pulp regeneration. METHODS:0-100 ng/mL of liposomal TGF-β1 was prepared using the thin-film hydrat...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2020.103501
更新日期：2020-12-01 00:00:00
abstract：OBJECTIVES:Demineralized lesions in tooth enamel around orthodontic brackets are caused by acids from cariogenic biofilm. This study aimed to develop a novel antibacterial orthodontic cement by incorporating a quaternary ammonium monomer dimethylaminododecyl methacrylate (DMADDM) into a commercial orthodontic cement, a...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2014.07.006
更新日期：2014-09-01 00:00:00
abstract：OBJECTIVES:To evaluate the effect of hydrothermal aging (H), mechanical cycling (M), and the combination of hydrothermal plus mechanical cycling (H+M) on biaxial flexural strength (BFS) and microstructure of two monolithic zirconias, indicated for anterior (AMZ) or posterior restorations (PMZ) and a conventional zircon...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.05.021
更新日期：2017-08-01 00:00:00
abstract：OBJECTIVE:To compare the effect of material and thickness on the color stability and relative translucency parameters (RTP) for monolithic ceramics subjected to coffee thermocycling. METHODS:Four specimens each at thicknesses of 0.5, 0,7 and 1 mm were sectioned from monolithic ceramics [preshaded monolithic zirconia (...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2018.01.010
更新日期：2018-04-01 00:00:00
abstract：OBJECTIVE:The main aim of this in vitro study was to evaluate the influence of Streptococcus mutans on the corrosion of titanium. METHODS:S. mutans biofilms were formed on commercially pure titanium (CP-Ti) square samples (10mm×10mm×1mm) using a culture medium enriched with sucrose. Open circuit potential (OCP) and el...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.03.008
更新日期：2013-06-01 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: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
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：UNLABELLED:Silver diammine fluoride (SDF) is used as an anticaries agent; however, its mode of action is uncertain, whether chemical, physical, mechanical or antibacterial. As a preliminary study, the effect of SDF on hydroxyapatite (HAp) and gelatin (as a chemically-representative protein) was examined. METHODS:2.5mg...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2011.06.008
更新日期：2011-09-01 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 aim of this study was to evaluate the influence of different titanium zirconium (TiZr) alloy surfaces on primary human gingival fibroblasts (HGF) for improved soft tissue integration of dental implants. METHODS:TiZr polished, machined and machined+HCl/H2SO4 acid-etched surfaces were modified by cathodic...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.11.003
更新日期：2014-01-01 00:00:00
