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, fracture of the restoration and of the tooth, marginal deterioration, and tarnish were assessed. METHODS:Sixty-five restorations of Galloy and 62 of Tytin (49 and 51 Class II restorations, respectively) were placed according to a predetermined scheme for randomisation in 37 patients by two operators using rubber dam isolation. For the Galloy restorations, the enamel and dentine were etched, and then sealed with PAAMA 2 dentine adhesive according to the manufacturer's instructions. After carving, PAAMA 2 was applied to the Galloy and light-cured. Cavity preparations for Tytin received no adhesive sealer. All restorations were polished at least 24 h post-operatively. Microstructural analysis of retrieved fragments of failed restorations was conducted using electron probe microanalysis. RESULTS:At 1 year, only one Tytin restoration was found to have failed due to an isthmus fracture. The remaining restorations of Tytin were intact with no reported sensitivity. Of the 65 Galloy restorations placed, 28 had to be removed, including restorations in teeth, which were symptomatic, non-vital and/or fractured, and teeth with fractured restorations. Tarnish was present on many of the Galloy restorations. Retrieved fragments of failed Galloy restorations exhibited a dark surface at the pulpal wall interface and small cracks were observed in that surface. Internal cracks and extensive corrosion was observed using the microprobe. Gallium oxides and chlorides were identified as the predominant corrosion products. CONCLUSIONS:The gallium alloy, Galloy, sealed with PAAMA 2 dentine adhesive system demonstrated a high clinical failure rate.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Neo J,Chew CL,Osborne JW,Mahler DBdoi
10.1016/s0300-5712(99)00051-2keywords:
subject
Has Abstractpub_date
2000-02-01 00:00:00pages
123-9issue
2eissn
0300-5712issn
1879-176Xpii
S0300-5712(99)00051-2journal_volume
28pub_type
临床试验,杂志文章,随机对照试验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 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:INTRODUCTION:Tooth surface loss (TSL) is an increasingly recognised problem. We are therefore seeing an increase in the number and complexity of in vitro studies investigating factors that modify effects at the tooth surface. AIM:The aim of this paper is to provide a narrative review that illustrates the more commonly...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/j.jdent.2010.01.002
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVES:This randomized, parallel group, single centre clinical trial was conducted to evaluate the safety and compare the whitening efficacy for an extended wear of an experimental 9.5% H₂O₂ high-adhesion whitening strip, relative to a marketed 10% H₂O₂ control strip. METHODS:Twenty-nine eligible adult volunteers ...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2012.11.019
更新日期:2013-08-01 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:To determine the relationship between leakage and microtensile bond strength in the same specimen of direct Class II composite restorations performed with two polymerization techniques. METHODS:Class II slot preparations were made in 40 non-carious human third molars and restored using Single Bond and P-60 (...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2005.01.001
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVES:To examine if there is a difference in possible sleep bruxism activity (SB) in subjects with or without attrition-type tooth wear. METHODS:Sixteen individuals with pronounced attritional-type tooth wear were compared with sex and aged matched controls without tooth wear by means of measurement of electromyo...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2015.10.002
更新日期:2015-12-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to evaluate the in vitro effectiveness of a new bioglass-containing and two commercial desensitising toothpastes on dentinal tubule occlusion after citric acid challenge or artificial saliva (AS) immersion. METHODS:One hundred dentin discs from human third molars were used. Spe...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2010.01.007
更新日期:2010-05-01 00:00:00
abstract:OBJECTIVE:Erosive tooth wear (ETW) is an irreversible loss of dental hard tissue. This pilot study examined dentists' ability to diagnose and manage ETW relative to sound and caries-affected teeth. METHODS:Dentists recruited through the Indiana Dental Association (N = 36) participated in an internet-based survey, cont...
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更新日期:2020-09-01 00:00:00
abstract:OBJECTIVES:To examine the effect of incorporating arginine in a 5% sodium fluoride (NaF) varnish on its remineralization potential and HGF-1 cytotoxicity. METHODS:Experimental varnishes were prepared using two arginine variants: l-arginine (Arg) and l-arginine monohydrochloride (Arg.HCl) at 2%, 4%, & 8% w/v. with cont...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103411
更新日期:2020-08-01 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...
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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:To investigate the effect of impregnation of poly(ethyl methacrylate) and tetrahydro-furfuryl methacrylate (PEM/THFM) polymeric delivery system with chlorhexidine or fluconazole on its shear bond strength (SBS) and water sorption. METHODS:For SBS testing, 16 PEM/THFM discs impregnated with chlorhexidine (CH...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2012.04.027
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVES:To investigate the effect of saliva substitutes on enamel erosion in vitro. METHODS:A total of 204 bovine enamel samples were embedded in acrylic resin and allocated to 17 groups (n=12). The specimens were eroded in an artificial mouth (3 days; 6×30 s/days, flow rate: 2 ml/min) using citric acid (pH: 2.5). ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2014.03.012
更新日期:2014-06-01 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
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journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/S0300-5712(11)70004-5
更新日期:2010-11-01 00:00:00
abstract::Silver-palladium alloys have been endorsed on clinical grounds as substitutes for gold alloys in posts and cores. However, carbon absorption during heating and casting can adversely affect the mechanical properties of silver-palladium alloys. In this study the tensile characteristics of endodontic posts cast in silver...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(89)90049-3
更新日期:1989-12-01 00:00:00
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, s...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2004.08.003
更新日期:2005-01-01 00:00:00
abstract:OBJECTIVES:Proanthocyanidins (PACs) are biocompounds mimicking native collagen cross-links. The effective and practical delivery of any biocompound is pivotal for clinical usage. The aim was to investigate the dentin biomodification and effective formation of dentin-resin biointerfaces of two highly bioactive PAC-rich ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103354
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVES:The objectives of this study were to: (1) develop a novel multifunctional composite with nanoparticles of silver (NAg), 2-methacryloyloxyethyl phosphorylcholine (MPC), dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP); and (2) investigate biofilm-inhibition ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2018.12.001
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVES:This prospective clinical study compared the performance of implant-retained (study group) and tooth-retained (control) zirconia based fixed dental prostheses (FDPs) with at least 4 units. The null-hypothesis stated that complication rates in both groups are equally distributed. METHODS:The study included p...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2014.10.011
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:This study compared the effect of water sorption on the extent of marginal gap reduction in a compomer (Dyract AP, Dentsply) and a composite (Spectrum, Dentsply) over a 12-week storage period. MATERIALS AND METHODS:Artificial gaps were created in 40 borosilicate glass cylinders, each 5mm deep and with an int...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(01)00053-7
更新日期:2002-01-01 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:OBJECTIVE:To evaluate a novel methodology using industrial scanners as a reference, and assess in vivo accuracy of 3 intraoral scanners (IOS) and conventional impressions. Further, to evaluate IOS precision in vivo. METHODS:Four reference-bodies were bonded to the buccal surfaces of upper premolars and incisors in fiv...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2017.12.006
更新日期:2018-02-01 00:00:00
abstract:OBJECTIVE:This study evaluated the effects of surface preparation and the application time of adhesives on the resin-dentine bond strengths with universal adhesives. METHODS:Sixty molars were cut to exposed mid-coronal dentine and divided into 12 groups (n=5) based on three factors; (1) adhesive: G-Premio Bond (GP, GC...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2016.02.001
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVES:This study evaluated the quality and the remodeling of bone around commercially pure titanium implants after 3, 6, 12 and 18 month implantation periods in the sheep. METHODS:Twelve animals were implanted in the cortico-trabecular areas of both femurs. Each femur received four implants with a rough surface (...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(02)00018-0
更新日期:2002-07-01 00:00:00
abstract:OBJECTIVES:To assess the cuspal deflection and cervical microleakage of standardised Class II cavities incrementally filled with a dimethacrylate RBC or bulk-fill flowable RBC bases. METHODS:Twenty-four sound upper premolar teeth with Class II cavities were allocated to three groups (n=8). Restoration of the teeth inv...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2012.02.015
更新日期:2012-06-01 00:00:00
abstract:OBJECTIVE:This study aims to analyze the addition of niobium silicate particles to dental adhesive resins and evaluate its physicomechanical and biological properties. METHODS:The SiNb particles were produced by the sol-gel route and presented a mean particle size of 2.1 μm and a specific surface area of 616,96m2/g. A...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103449
更新日期:2020-10-01 00:00:00
abstract:OBJECTIVES:To assess whether the bonding potential to dentin of self-adhesive resin cements was affected by their pre-cure temperature. METHODS:Composite overlays (Paradigm MZ100, 3M ESPE) were luted on 100 extracted molars with G-Cem (GC Corp.), BisCem (Bisco), Multilink Sprint (Ivoclar Vivadent), SAC-A (Kuraray Co.)...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2009.02.006
更新日期:2009-06-01 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:Health condition of the gingival tissues contacting the surfaces of fixed prostheses is a result of multiple etiologic factors. The aim of the investigation discussed here was to evaluate the attachment and proliferation rate of cultured human epithelial cells on three commonly used restorative materials und...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2013.11.008
更新日期:2014-01-01 00:00:00