Abstract:
OBJECTIVES:To measure the tooth whitening effects delivered immediately after brushing with silica-based toothpastes containing blue covarine in vitro and in vivo. METHODS:Salivary pellicle coated human extracted teeth were brushed with either a slurry of a toothpaste containing blue covarine (BC), a formulation containing an increased level of blue covarine (BC+) or a negative control toothpaste containing no blue covarine. The colour of the specimens were measured in vitro using either a Minolta chromameter or a VITA Easyshade spectrophotometer, before and after brushing and changes in CIELAB values and tooth Whiteness Index (WIO) values calculated. In a double-blind cross-over clinical study, subjects brushed with either BC or BC+ toothpaste and tooth colour changes were measured with a digital image analysis system. RESULTS:The in vitro studies demonstrated that toothpastes containing blue covarine gave a significantly (p<0.05) greater change in b* and WIO values than the negative control toothpaste; the BC+ toothpaste gave a significantly greater increase in b* and WIO values than the BC toothpaste, and BC+ gave a significant increase in shade change versus the negative control. Clinical results showed that BC and BC+ gave a significant reduction in b* (p<0.0001) and increase in WIO (p<0.0001) from baseline indicating significant tooth whitening had occurred. The parameter changes were significantly greater when brushing with the BC+ toothpaste than with the BC toothpaste (WIO p=0.006; b* p=0.013). CONCLUSIONS:Toothpastes containing blue covarine gave a statistically significant reduction in tooth yellowness and improvement in tooth whiteness immediately after brushing in both in vitro and clinical studies. In addition, the higher concentration blue covarine toothpaste gave statistically significant greater tooth whitening benefits than the lower concentration blue covarine toothpaste. CLINICAL SIGNIFICANCE:The silica-based toothpastes containing blue covarine evaluated in the current study gave tooth whitening benefits immediately after one brush.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Tao D,Smith RN,Zhang Q,Sun JN,Philpotts CJ,Ricketts SR,Naeeni M,Joiner Adoi
10.1016/j.jdent.2017.10.014subject
Has Abstractpub_date
2017-12-01 00:00:00pages
S20-S24eissn
0300-5712issn
1879-176Xpii
S0300-5712(17)30266-Xjournal_volume
67Spub_type
杂志文章abstract:OBJECTIVES:The aim of this study was to compare four finishing/polishing systems (F/P) on surface roughness and gloss of different resin composites. METHODS:A total of 40 disc samples (15 mm × 3 mm) were prepared from a nanofill - Filtek Supreme Plus (FS) and a micro-hybrid resin composite - Esthet-X (EX). Following 2...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2011.01.006
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVES:Functionalised silica sub-micron particles are being investigated as a method of delivering antimicrobials and remineralisation agents into dentinal tubules. However, their methods of application are not optimised, resulting in shallow penetration and aggregation. The aim of this study is to investigate the ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2016.11.006
更新日期:2017-01-01 00:00:00
abstract:OBJECTIVES:The purpose of the study was to investigate denture satisfaction related to treatment modality, age, gender, denture quality, chewing ability, denture experience and patients' attitude towards denture wearing. METHODS:In a randomized controlled clinical trial 74 patients who required immediate denture thera...
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)00012-7
更新日期:1997-03-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to determine the effect on tooth colour (after 1 and 2 weeks use) of a self-applied tooth-whitening gel containing 6% hydrogen peroxide using a novel applicator, compared to a standard fluoride toothpaste. METHODS:A 2-week, examiner-blind, stratified, parallel design clinical trial...
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.2003.10.008
更新日期:2004-01-01 00:00:00
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: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 a silver-reinforced glass ionomer material (cermet) with a resin-modified glass ionomer in minimal Class II preparations in primary teeth. METHODS:Matched pairs of primary molars with approximal caries that required operative treatment were used. Each cavity was filled with either Vitremer or Keta...
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)00004-4
更新日期:1999-08-01 00:00:00
abstract::The effects of sample thickness on the in vitro bond strength of two light-activated glass polyalkenoate cements to dentine have been investigated. The buccal and/or lingual surfaces of non-carious human third molar teeth were used for bonding. The tensile bond strengths to dentine of samples of the cements of 0.5 mm,...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(94)90123-6
更新日期:1994-08-01 00:00:00
abstract::The bacteriological contamination of pumice slurry in polishing units in a dental clinical area (high risk), a production laboratory (medium risk), and a non-clinical teaching laboratory (low risk), was investigated. Slurry samples taken from all three areas were found to be heavily contaminated with pathogenic organi...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(90)90030-i
更新日期:1990-10-01 00:00:00
abstract:OBJECTIVES:To evaluate the correlation between the shark fin test and the dimensional accuracy of impressions, surface detail reproduction of impressions and rheological properties of impression materials within the manufacturer's recommended working time. METHODS:Four chemically different types of impression material...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2006.11.009
更新日期:2007-05-01 00:00:00
abstract:AIM:The main goal of this prospective clinical study was to evaluate the outcome of inlay-retained fixed dental prostheses (FDPs) made from heat-pressed lithium-disilicate glass-ceramic. METHODS:Forty-five FDPs were placed in 42 patients (21 women, mean age 36.1 years and 21 men, mean age 42.0 years). The FDPs replace...
journal_title:Journal of dentistry
pub_type: 临床试验,杂志文章
doi:10.1016/j.jdent.2010.07.012
更新日期:2010-11-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to determine the dentine fluoride uptake from three fluoride-containing composites (FluorEver, FluoroCore and Pertac-Hybrid) and to investigate their ability to affect the resistance of dentine to an artificial caries challenge. METHODS:Three dentine slabs were prepared from ea...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(96)00045-0
更新日期:1997-05-01 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:OBJECTIVES:Toothbrushing and interdental cleaning are critical to maintaining good oral health. Literature is beginning to suggest that these behaviours may be conducted automatically, although the instigation ('deciding to do') and execution ('doing') of these behaviours has never been examined separately. The objecti...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103470
更新日期:2020-11-01 00:00:00
abstract:OBJECTIVE:The aim of this long-term follow-up was to collect up to 17-year survival data of different metal post-and-core restorations with a covering crown. METHODS:At initiation of the study, a controlled clinical trial, single tooth was provided with an artificial covering crown, by 18 operators. Restorations under...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2007.07.006
更新日期:2007-10-01 00:00:00
abstract:OBJECTIVE:This randomised, examiner-blind parallel group study was designed to evaluate the safety and efficacy of a rechargeable oscillating/pulsating toothbrush (Oral-B ProfessionalCare 7000, Oral-B Laboratories; PC 7000) and a battery-operated toothbrush (Crest SpinBrush Pro, Procter & Gamble Company; SBP) in the re...
journal_title:Journal of dentistry
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:2005-06-01 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:OBJECTIVE:This study evaluated the effect of 2% chlorhexidine-containing acid (Ac/CHX) and 2% chlorhexidine digluconate solution (CHX) on immediate (IM) and 2-year (2Y) resin-dentin bond strength (BS) and silver nitrate uptake (SNU) for two simplified etch-and-rinse adhesives. METHODS:Forty-two caries-free extracted m...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2010.10.001
更新日期:2011-01-01 00:00:00
abstract:OBJECTIVE:Sodium hexametaphosphate (SHMP) is a widely used industrial preservative commonly found in children's drinks. In this paper we examined the effect of SHMP incorporated into children's drinks on acid production by the oral biofilm by monitoring salivary concentrations of lactic acid. MATERIALS AND METHOD:Twel...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2006.08.003
更新日期:2007-03-01 00:00:00
abstract:OBJECTIVE:This randomized controlled trial compared the survival of glass fibre and cast metal dental posts used to restore endodontically treated teeth with no remaining coronal wall. METHODS:Fifty-four participants (45 women) and 72 teeth were evaluated during a follow-up period of up to 3 years. Teeth were randomly...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2014.02.003
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate restorations, previously placed in clinical trials, for the rate of wear of the proximal surfaces, by tooth position. MATERIALS AND METHODS:Seventy resin composite restorations were evaluated in bicuspids and molars. Fifty restorations were direct placement restorati...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(95)00040-2
更新日期:1996-01-01 00:00:00
abstract:OBJECTIVES:The purpose of the present review was to test the null hypothesis of no difference in the implant failure rate, marginal bone loss, and postoperative infection for patients being rehabilitated by tilted or by axially placed dental implants, against the alternative hypothesis of a difference. METHODS:An elec...
journal_title:Journal of dentistry
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jdent.2014.09.002
更新日期:2015-02-01 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:Wear of dental hard tissues, e.g. dental erosion, is reported to be a growing problem. A non-destructive measurement of enamel layer thickness would provide the opportunity for both early diagnosis, and longitudinal measurement of progressive enamel loss. It was the aim of this study to investigate the poten...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(99)00063-9
更新日期:2000-03-01 00:00:00
abstract::Memory and psychophysiological variables in persons with self-reported reactions to dental amalgam (amalgam patients: N=26) and in persons without such symptoms (controls: N=21) were compared. The groups were matched regarding age, education, and amount of amalgam. Wechsler Memory Scale-Revised was obtained for all su...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(03)00086-1
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVES:To evaluate the incidence of prosthetic complications in implant-retained crowns made with UCLA castable abutments and to identify possible risk factors with a view to establishing recommendations to help predict the success of such restorations. METHODS:A cohort follow-up study was carried out in 71 partia...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2012.09.001
更新日期:2012-12-01 00:00:00
abstract:OBJECTIVES:To measure aspects of fizzy drink consumption in a social environment to inform the development of a laboratory testing regime. METHODS:This was an observational study in which participants were invited to attend one of four pizza and soft drink parties. All such foods and drinks were served in an air condi...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2015.08.008
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVES:The objectives of this study were two-fold: (1) to determine (by surfometry) loss of deciduous and permanent enamel and dentine following 15days' exposure to a single low pH orange drink; and (2) to determine (by surfometry) loss of deciduous and permanent enamel and dentine following exposure to the product...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(99)00074-3
更新日期:2000-05-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to clarify the positional relationship between the crown contour and the pulp chamber using micro-CT system for restorations of maxillary second deciduous molar. METHODS:Five maxillary second deciduous molar teeth each from the deciduous dentition and the mixed dentition periods...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2005.12.001
更新日期:2006-08-01 00:00:00
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