Abstract:
OBJECTIVES:The purpose of the current study was to examine whether alumina abrasion regime influenced the necessary surface roughness conducive to mechanical interlocking prior to composite resin bonding. The impact of alumina abrasion and cement lute on the bi-axial flexure strength and associated Weibull Moduli (m) on the cemented surfaces of disc specimens of porcelain laminate veneer (PLV) materials was therefore investigated. METHODS:Sets of 20 Vitadur-alpha dentine porcelain discs (15 mm diameter, 1.7 mm thickness) were condensed and prepared by abrading with 25, 50 or 110 microm alumina. Further specimen groups were stored wet or coated with a resin cement. Mean fracture strengths, standard deviations and associated m were determined using a ball-on-ring assembly. The surface roughness was assessed using profilometry and scanning electron microscopy. RESULTS:The one-way ANOVA revealed a significant reduction (P<0.05) between the means of the dry control and alumina abraded specimens. A significant increase in m was identified for 50 and 110 microm alumina abraded cemented specimens (6.1+/-1.4 and 6.0+/-1.3, respectively) compared with the 25 microm alumina abraded cemented and non-alumina abraded cemented controls (3.9+/-0.9 and 3.5+/-0.8, respectively). Increasing the alumina particle size utilised for the abrasion resulted in a decrease in the surface roughness (R(a) value) which is the arithmetic mean of the absolute departures of the roughness profile from the mean line. SIGNIFICANCE:Alumina abrasion acted to replace surface defects with a narrower distribution of defects. Composite resin polymerisation shrinkage may prevent surface flaws from being extended by healing the key surface defects and would appear to suggest that the use of a resin-based luting material may reduce the potential for crack propagation. Given the arrangement of ions across crack tips it is more likely that the resin composite cement enhanced strength by acting to heal key defects rather than imposing a compressive stress on the porcelain surface as suggested previously.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Fleming GJ,Jandu HS,Nolan L,Shaini FJdoi
10.1016/j.jdent.2003.08.004keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
67-74issue
1eissn
0300-5712issn
1879-176Xpii
S0300571203001416journal_volume
32pub_type
杂志文章abstract:OBJECTIVE:The aim of this study was to characterize the surface of Y-TZP after abrasion with various airborne particles. METHODS:The Y-TZP blanks were cut into 44 discs and sintered according to the manufacturer's instructions. The specimens were treated as follows: (a) control specimens, (b) abraded with 50μm alumina...
journal_title:Journal of dentistry
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doi:10.1016/j.jdent.2012.05.003
更新日期:2012-09-01 00:00:00
abstract:OBJECTIVES:To evaluate bone reconstruction and soft tissue reactions at immediate implants placed into intact sockets and those with buccal bone dehiscence defects. METHODS:Fifty-nine internal connection implants from four different manufacturers were immediately placed in intact sockets(non-dehiscence group, n=40), a...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2017.07.010
更新日期:2017-10-01 00:00:00
abstract:OBJECTIVES:To evaluate the effect of using a bulk-fill flowable base material on fracture strength and fracture patterns of root-filled maxillary premolars with MOD preparations restored with laminate restorations. METHODS:Fifty extracted maxillary premolars were selected for the study. Standardized MOD cavities with ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2017.05.016
更新日期:2017-08-01 00:00:00
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 ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2004.10.001
更新日期:2005-04-01 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:Long-term survival of two highly viscous glass ionomer cements (Fuji IX GP Fast and Equia Fil) over a period of 6 years in vivo. METHODS:A total of 85 two- or three-surface class II restorations, comprising 43 Equia Fil / Equia Coat and 42 Fuji IX GP Fast / Fuji Coat LC, were placed in 34 patients. The rest...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2020.103333
更新日期:2020-06-01 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:The failure of the bond between acrylic resin denture base material and resin teeth remains a significant problem. This study evaluated the tensile bond strength of specimens produced by commonly employed tooth preparation and processing methods as used in dental laboratories. METHODS:Twenty-two experimenta...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(98)00034-7
更新日期:1999-02-01 00:00:00
abstract:OBJECTIVES:The aim of the study was to investigate the effect of silver diamine fluoride (SDF) therapy on the oral health-related quality of life (OHRQoL) of preschool children and their families in a school-based setting. METHODS:A prospective study was conducted in six kindergartens in Hong Kong. Parents of the chil...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2018.12.004
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVES:The reason for high water absorption by room temperature vulcanizing (RTV) silicone denture soft lining materials has not been demonstrated previously. An experimental room-temperature vulcanizing (RTV) silicone soft lining material which had been shown to have good mechanical properties had high water absor...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(95)00032-1
更新日期:1996-01-01 00:00:00
abstract::OBJECTIVES.: To compare the safety and plaque removal efficacy of two oscillating/rotating/pulsating toothbrushes (Oral-B ProfessionalCaretrade mark 7000 [PC 7000] and Oral-B 3D Excel [3DE]) and a high-frequency toothbrush (Sonicare(R) Advance, Philips Oral Healthcare; SA) in a single-use, examiner-blind, three period...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:
更新日期:2005-06-01 00:00:00
abstract:OBJECTIVES:To determine the longevity of heat-pressed glass ceramic inlays and onlays luted with solely light-curing composite resin. METHODS:The records of patients who had received a ceramic inlay or onlay at the Heidelberg University Department of Conservative Dentistry from 1993 to 2002 were evaluated. The mean ob...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2004.10.026
更新日期:2005-05-01 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: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:OBJECTIVES:This study aimed to evaluate the effect of low-fluoride toothpastes with calcium glycerophosphate (CaGP) on enamel remineralization in situ. METHODS:Volunteers (n=10) wore palatal devices holding four bovine enamel blocks. The treatments involved 5 experimental phases of 3 days each according to the followi...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2014.09.001
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVE:To investigate the wear mechanisms and evolution of damage in tooth enamel-resin composite bonded interfaces caused by sliding contact, and to develop an understanding of interface degradation from a tribological viewpoint that supports clinical recommendations for improving interface integrity. METHODS:Reci...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2019.02.004
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVES:To assess the accuracy of a novel, non-invasive method for determining the axis of rotation of articulated dental study casts. METHOD:A 3D structured light scanner was constructed using a projector and two CMOS cameras. Dental stone casts were arbitrarily mounted on an average value articulator. With the te...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2013.11.019
更新日期:2014-02-01 00:00:00
abstract::The effects of gamma radiation at therapeutic dosage levels on the physical properties of three anterior (two light-cured and one autocure) composites and a light-cured posterior composite were studied. Gamma radiation had no effect on the autocured composite but had varied effects on the light-cured systems. The diam...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(89)90071-7
更新日期:1989-08-01 00:00:00
abstract:OBJECTIVE:This study compared the antibacterial activities of two dentin bonding systems (ABF, Kuraray and Reactmer Bond, Shofu) by a conventional agar well technique and a newly designed in vitro test using tooth model. METHODS:In the agar well technique, the test materials were filled in the wells of Muller Hinton a...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(03)00006-x
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVES:This in vitro study examined the resistance to displacement offered by guide planes and the displacement mechanics of a bilateral bounded saddle cast cobalt chrome alloy removable partial denture framework under conditions simulating an average initial fit. METHODS:A specially designed model mouth jig fitte...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(01)00016-1
更新日期:2001-05-01 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: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 bonding of resin to dentine is dependent largely on surface modifications. The purpose of the present study was to test the hypothesis that a role of the metal chlorides used as primers is to initiate polymerization of resin at the resin-dentine interface, thereby affecting bond strength. METHODS:Nine p...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(97)00030-4
更新日期:1998-09-01 00:00:00
abstract:OBJECTIVE:To analyse the DIAGNOdent's performance to longitudinally monitor the arrestment of non-cavitated carious lesions in occlusal surfaces. METHODS:The sample consisted of 15 children (12-13 years old) with 40 active non-cavitated lesions. The protocol for the examinations was: prophylaxis, drying teeth for 30s;...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2007.05.005
更新日期:2007-08-01 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: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:The aim of this study was to test the hypothesis that cross-polarization optical coherence tomography (CP-OCT) can be used to longitudinally monitor demineralization peripheral to orthodontic brackets in an extended clinical study. METHODS:A high-speed CP-OCT system was used to acquire 3D volumetric images ...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2014.02.011
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to compare the fracture strength of three techniques used to re-attach tooth fragments in sound and endodontically treated fractured teeth with or without fiber post placement. MATERIAL AND METHODS:Ninety human lower incisors were randomly divided into three groups of 30 teeth each...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2008.01.001
更新日期:2008-04-01 00:00:00
abstract:OBJECTIVES:To explore the association between frequency of consumption of sugar-sweetened beverages (SSB) and caries increment over 4 years in adults. A second objective was to explore whether the association between frequency of SSB consumption and caries increment varied by socio-demographic characteristics and use o...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2014.04.011
更新日期:2014-08-01 00:00:00
abstract:OBJECTIVES:To evaluate the effect of the addition of epigallocatechin-3-gallate (EGCG) on the antibacterial and physical properties of glass ionomer cement (GIC). METHODS:A conventional GIC, Fuji IX, was used as a control. EGCG was incorporated into GIC at 0.1% (w/w) and used as the experimental group. Chlorhexidine (...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2013.07.014
更新日期:2013-10-01 00:00:00