Abstract:
:This study measured the polymerization contraction of a resin composite cured at three levels of energy density, each attained at six different levels of power density. The polymerization contraction of the composite was recorded by the method of the deflecting disc (n = 5) for 1 h following the start of irradiation. Power densities of 50, 100, 200, 400, 800 and 1,000 mW cm(-2), as measured on a dental radiometer, were obtained by variation of distance and supply voltage of a commercial light-curing unit. The spectral distribution at each power density was recorded using a spectrophotometer. The absorption spectrum of camphorquinone was also recorded, and the efficiency of the radiation at each power density was calculated as the integral over wavelength of the product of absorption and emission. From the slope of the contraction curves, an approximation to the initial rate of polymerization, Rp, was calculated and was taken as an alternative measure of power density. Statistical analyses showed that polymerization contraction increased significantly with increasing levels of energy density received by the resin composite, and, for each level of energy density, that the contraction decreased significantly with increasing power density.
journal_name
Eur J Oral Scijournal_title
European journal of oral sciencesauthors
Asmussen E,Peutzfeldt Adoi
10.1111/j.1600-0722.2005.00239.xsubject
Has Abstractpub_date
2005-10-01 00:00:00pages
417-21issue
5eissn
0909-8836issn
1600-0722pii
EOS239journal_volume
113pub_type
杂志文章abstract::The aim of this study was to investigate the relationship between dental fluorosis and dental caries among western Saharan refugee children. The western Saharan child population is characterized by adverse living conditions, an unbalanced diet, poor oral hygiene habits, and a concentration of fluoride in the drinking ...
journal_title:European journal of oral sciences
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1600-0722.2008.00583.x
更新日期:2008-12-01 00:00:00
abstract::The non-stick properties of thin-film coatings on dental-restorative instruments were investigated by static contact-angle measurement using dental filler resin as well as by scanning electron microscopy of the amount of sticking dental restorative material. Furthermore, using a customized dipping measurement set-up, ...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/eos.12372
更新日期:2017-12-01 00:00:00
abstract::The aim of this in vitro study was to investigate the relationship between bacterial infections in carious dentin when detected by two different methods -- polymerase chain reaction (PCR), and a laser fluorescence device, DIAGNOdent. Dentin was removed every 300 micro m in the direction of the pulp chamber in 10 extra...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2004.00161.x
更新日期:2004-10-01 00:00:00
abstract::Root resorption appears to be an inevitable sequel to orthodontic tooth movement, occurring either apically or along surfaces in and around the pressure zones. However, there is uncertainty as to the location of initial cementum repair in resorbed areas as well as the time of onset of repair. The aim of the present st...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.1995.tb00029.x
更新日期:1995-10-01 00:00:00
abstract::p21(WAF1/CIP1) is a cyclin-dependent kinase (Cdk) inhibitor. This protein may function during development as an inducible growth inhibitor that contributes to cell cycle exit and differentiation. The expression pattern of p21 during mouse embryogenesis was correlated with terminal differentiation of multiple cell line...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.1998.tb02160.x
更新日期:1998-01-01 00:00:00
abstract::The human host defense peptide, LL-37, is an important player in the first line of defense against invading microorganisms. LL-37 and its precursor, hCAP18, have been detected in unstimulated whole saliva but no reports showing hCAP18/LL-37 in isolated, parotid, and/or submandibular/sublingual saliva have been present...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/eos.12407
更新日期:2018-04-01 00:00:00
abstract::Orthodontic therapy is known to have an aggravating effect on the progression of destructive periodontitis if oral hygiene is not maintained. However, it is largely unknown how active periodontitis affects the velocity of orthodontic tooth movement. In this study, we examined the effect of periodontal inflammation on ...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2009.00625.x
更新日期:2009-06-01 00:00:00
abstract::An oxygen inhibition layer develops on surfaces exposed to air during polymerization of particulate filling composite. This study assessed the thickness of the oxygen inhibition layer of short-fiber-reinforced composite in comparison with conventional particulate filling composites. The effect of an oxygen inhibition ...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/eos.12167
更新日期:2015-02-01 00:00:00
abstract::Genetic factors underlie the susceptibility and the resistance to dental fluorosis (DF). The A/J (DF susceptible) and 129P3/J (DF resistant) mouse strains have previously been used to detect quantitative trait loci (QTLs) associated with DF on chromosome (Chr) 2 and Chr 11. In the present study, increased marker densi...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2011.00868.x
更新日期:2011-12-01 00:00:00
abstract::The aims of this study were to evaluate the flexural strength of two different types of glass fibre-reinforced posts bonded to dual-cure composite resin cements. Forty glass methacrylate-based fibre posts (GC Fiber Post) and 20 glass fibre inter-polymerizing network posts (everStick POST) were divided into three group...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2010.00721.x
更新日期:2010-04-01 00:00:00
abstract::Low concentrations of fluoride have a beneficial effect on enamel and dentin de- and remineralization. After fluoride treatments, such as topical applications, rinses or dentifrices, salivary fluoride concentrations decrease exponentially in a biphasic manner to very low concentrations within a few hours. For treatmen...
journal_title:European journal of oral sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0722.1997.tb00231.x
更新日期:1997-10-01 00:00:00
abstract::The aim of this study was to determine the effect of interleukin-10 (IL-10) on the gene expression of osteoclastogenic regulatory molecules in rat dental follicle cells. Interleukin-10 is an anti-inflammatory cytokine that inhibits alveolar bone resorption, but the molecular basis for this is unknown. Alveolar bone re...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2006.00283.x
更新日期:2006-02-01 00:00:00
abstract::The purpose of the present study was to investigate the effect of an experimental primer containing a microperoxidase (MP-11) with 2-hydroxyethyl methacrylate on adhesive bonding of three different luting systems and dentin. The luting systems prepared were three etch-and-rinse systems (10-3/Super-Bond, 10-0/Super-Bon...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2009.00634.x
更新日期:2009-06-01 00:00:00
abstract::The expression of HLA Class II antigens on the surfaces of immunocompetent cells and the presence of CD1a+ cells (Langerhans cells) are important components of antigen presentation. Quantitative variations in HLA class II expression on antigen-presenting cells play a role in immune regulation. An indirect immunofluore...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.1995.tb00161.x
更新日期:1995-08-01 00:00:00
abstract::Prostaglandins, especially prostaglandin E2 (PGE2), play a crucial role in the pathogenesis of periodontal disease. We have previously reported that inflammatory mediators interleukin-1 (IL-1) and tumor necrosis factor alpha (TNFalpha) increase the production of PGE2 in human gingival fibroblasts. In this study, we in...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1034/j.1600-0722.2001.00999.x
更新日期:2001-06-01 00:00:00
abstract::The aim of the present study was to determine the nature of the cells associated with the formation of reparative acellular extrinsic fiber cementum (AEFC). Calcifying collagen membranes, hydroxyapatite particles and/or non-resorbable ePTFE membranes were implanted in lesions made in the periodontium of the rat mandib...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.1998.tb02200.x
更新日期:1998-01-01 00:00:00
abstract::The eda mouse gene is linked with anomalies of ectodermal derivatives, such as hair, glands, and teeth. The palatal rugae (oral mucosa foldings on the hard palate) are also ectodermal derivatives. Therefore, we searched for and compared palatal rugae anomalies of Tabby mice bearing a mutation in the eda gene with thei...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2007.00482.x
更新日期:2007-12-01 00:00:00
abstract::The effect of recombinant human platelet-derived growth factor-BB (rhPDGF-BB) on bone healing was examined in calvarial defects in rabbits. Bicortical circular (critical size) defects were prepared in the calvarial bone of 16 rabbits. The defects were closed on the dural side and covered externally with expanded polyt...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.1997.tb00181.x
更新日期:1997-02-01 00:00:00
abstract::The goals of this study were to investigate whether (i) muscle activities are affected by different feedback strategies, (ii) the balancing behavior of the neuromuscular system is influenced by different force levels, and (iii) axial loading of the posterior teeth is a realistic biomechanical conception. In 10 healthy...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2008.00537.x
更新日期:2008-06-01 00:00:00
abstract::The demineralization of dentin was studied when placed adjacent to one of four experimental denture base-resins. These experimental resins contained polymethylmethacrylate (PMMA) and 0, 5, 10, 20 or 30 wt% surface reaction-type prereacted glass-ionomer (S-PRG) filler, respectively. A dentin thin-section was sandwiched...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2009.00678.x
更新日期:2009-12-01 00:00:00
abstract::This study compared SYBR Green real-time quantitative PCR (qPCR) with standard plate counting for the enumeration of Streptococcus mutans in oral samples. Oral samples (n = 710) were collected from high-caries-risk children for quantification of S. mutans by qPCR using primer pairs. The S. mutans copy number was calcu...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2011.00888.x
更新日期:2011-12-01 00:00:00
abstract::To explore the intrafamilial homology and longitudinal stability of colonization by early acquired mutans streptococci, genomic fingerprinting was performed on 254 strains (192 Streptococcus mutans and 62 Streptococcus sobrinus strains) collected from 16 families (16 mother-child pairs, seven fathers and four siblings...
journal_title:European journal of oral sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1034/j.1600-0722.2003.00068.x
更新日期:2003-10-01 00:00:00
abstract::The purpose of this study was to evaluate the effect of combining fluoride dentifrice (FD) and varnish (FV) on in vitro enamel surface rehardening and on fluoride uptake under a pH-cycling regimen. Seventy-eight bovine enamel blocks with early lesions were used and 52 were divided into four treatment groups: (a) place...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1034/j.1600-0722.2003.00007.x
更新日期:2003-02-01 00:00:00
abstract::Enamelysin is a matrix metalloproteinase (MMP-20) secreted by ameloblasts, previously shown to hydrolyze recombinant amelogenin. The purpose of this study was to use recombinant MMP-20 to further investigate the specific hydrolysis of peptide fragments containing cleavage sites for tyrosine-rich amelogenin peptide (TR...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1046/j.0909-8836.1999.eos107506.x
更新日期:1999-10-01 00:00:00
abstract::The main objective of this study was to assess whether dental caries status was related to nutritional status in preschool urban Brazilian children aged 12-59 months. Dental and anthropometric examinations were conducted on 1,018 12-59-month-old children during the National Day of Children Vaccination. Dental caries p...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.2007.00507.x
更新日期:2008-02-01 00:00:00
abstract::In vivo and ex vivo gene transfer are being developed for localized skeletal regeneration. These strategies for tissue regeneration were tested in an adult ferret model of vital pulp therapy. In this model a reversible pulpitis was induced first. Then after 3 d, the pulps were directly infected with recombinant virus ...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1034/j.1600-0722.2001.00150.x
更新日期:2001-12-01 00:00:00
abstract::Paraffin-stimulated saliva samples were collected from 140 children 3- and 4-yr old attending nine nursery schools in Latvia. The salivary levels of mutans streptococci were rated from zero to 3 after being cultured on a commercially available strip selective for these microorganisms. Of the children, 29.3% were rated...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/j.1600-0722.1995.tb00171.x
更新日期:1995-08-01 00:00:00
abstract::We sought to investigate site-specific expression of bone-regulatory factors expressed by human dental follicles and to compare the stimulated expression of tumour necrosis factor (ligand) superfamily, member 11/tumour necrosis factor receptor superfamily, member 11b (RANKL/OPG) in human dental follicle cells (HDFCs) ...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/eos.12568
更新日期:2018-12-01 00:00:00
abstract::Although interproximal attrition is considered to be limited in modern populations, it has important clinical implications. However, in contrast to occlusal attrition, proximal attrition receives limited scientific attention. The main purpose of the current study was to fill this void. Seven-hundred and sixty-five tee...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1111/eos.12135
更新日期:2014-08-01 00:00:00
abstract::In vitro investigations of cell-specific metabolism and cell interactions as well as biocompatibility studies are often hampered by the limited lifespan of primary cells originating from target tissues like the oral mucosa, gingiva or pulp. Pulp cells, as do other primary cells, undergo senescence after several passag...
journal_title:European journal of oral sciences
pub_type: 杂志文章
doi:10.1034/j.1600-0722.2000.108005432.x
更新日期:2000-10-01 00:00:00