Abstract：
:This study evaluated the effect of core-design modification on the characteristic strength and failure modes of glass-infiltrated alumina (In-Ceram) (ICA) compared with porcelain fused to metal (PFM). Premolar crowns of a standard design (PFMs and ICAs) or with a modified framework design (PFMm and ICAm) were fabricated, cemented on dies, and loaded until failure. The crowns were loaded at 0.5 mm min(-1) using a 6.25 mm tungsten-carbide ball at the central fossa. Fracture load values were recorded and fracture analysis of representative samples were evaluated using scanning electron microscopy. Probability Weibull curves with two-sided 90% confidence limits were calculated for each group and a contour plot of the characteristic strength was obtained. Design modification showed an increase in the characteristic strength of the PFMm and ICAm groups, with PFM groups showing higher characteristic strength than ICA groups. The PFMm group showed the highest characteristic strength among all groups. Fracture modes of PFMs and of PFMm frequently reached the core interface at the lingual cusp, whereas ICA exhibited bulk fracture through the alumina core. Core-design modification significantly improved the characteristic strength for PFM and for ICA. The PFM groups demonstrated higher characteristic strength than both ICA groups combined.
journal_name
Eur J Oral Scijournal_title
European journal of oral sciencesauthors
Bonfante EA,da Silva NR,Coelho PG,Bayardo-González DE,Thompson VP,Bonfante Gdoi
10.1111/j.1600-0722.2008.00608.xsubject
Has Abstractpub_date
2009-04-01 00:00:00pages
194-9issue
2eissn
0909-8836issn
1600-0722pii
EOS608journal_volume
117pub_type
杂志文章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 aim of this study was to evaluate and to test the psychometric properties of a Swedish version of the revised Dental Beliefs Survey (DBS-R) in different patient groups and in a non-clinical sample of students. It was hypothesized that negative dental beliefs, assessed using the DBS-R, would discriminate between fe...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2006.00358.x
更新日期：2006-06-01 00:00:00
abstract：:Secretion rates and composition of unstimulated and chewing-stimulated whole saliva and 3% citric acid stimulated parotid and submandibular-sublingual secretions were studied in 12 hypertensive patients during withdrawal of and re-exposure to antihypertensive pharmacotherapy. All the patients' blood pressures were wel...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.1996.tb00076.x
更新日期：1996-06-01 00:00:00
abstract：:The aim of this study was to assess post-trial treatment costs, clinical outcomes [decayed, missing or filled surfaces (DMFS) scores], and utilization of dental services among adolescents who had participated in a randomized clinical trial (RCT) in Pori, Finland, in 2001-2005. At baseline the children were 11-12 yr of...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2010.00726.x
更新日期：2010-06-01 00:00:00
abstract：:As a result of their presence throughout the mouth in the submucosa or between muscle fibers, minor salivary glands secrete directly and continuously into the oral cavity, providing mucosal surfaces with highly glycosylated proteins that are active in bacterial aggregation and in oral tissue lubrication. In this study...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2009.00700.x
更新日期：2010-02-01 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：:Subsurface demineralization in enamel caries is known to entail diffusion of reagents and products both within the lesion and within the plaque biofilm external to the lesion. However, development of a predictive mathematical model for subsurface demineralization is hindered by limited quantitative understanding of th...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2005.00188.x
更新日期：2005-02-01 00:00:00
abstract：:The aim of this study was to evaluate the postoperative consequences of chorda tympani reclining during middle ear surgery for otosclerosis. Electrogustometric taste thresholds were measured at 11 loci on the tongue and the soft palate in 14 patients before surgery, and 8 d, 1 month and (in some cases) 6 months after ...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2008.00556.x
更新日期：2008-10-01 00:00:00
abstract：:In the present study we investigated the prevalence of self-reported hand eczema as well as subjective associations between skin symptoms and composite/bonding or other dental materials among Swedish dentists. A questionnaire on skin symptoms, atopy, occupational experience, and other background factors was sent to a ...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1046/j.0909-8836.1999.eos107612.x
更新日期：1999-12-01 00:00:00
abstract：:This study aimed to investigate the effect of glutamate-evoked masseter muscle pain on intramuscular oxygenation during rest and sustained elevated muscle activity (SEMA). Seventeen healthy individuals participated in two sessions in which they were injected with glutamate and saline in random order. Each session was ...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/eos.12383
更新日期：2017-12-01 00:00:00
abstract：:Aesthetic alternatives to stainless-steel crowns for restoring primary molars attain growing interest. We studied the mechanical properties of prefabricated zirconia crowns and conventional crowns. Three brands of prefabricated zirconia crowns were compared with computer-aided design/computer-aided manufacturing (CAD/...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/eos.12645
更新日期：2019-08-01 00:00:00
abstract：:Dentinogenesis imperfecta type II and dentin dysplasia type II are diseases resulting in abnormal dentin formation, which have been mapped to overlapping regions of human chromosome 4q defined by markers D4S2691 and D4S2692 (6.6 cM) and D4S3291 and SPP1 (14.1 cM), respectively. Recently, two of the major non-collageno...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.1998.tb02180.x
更新日期：1998-01-01 00:00:00
abstract：:The Enamel Defects Index (EDI) was created based on three innovative principles: (i) a basic level of the three major categories of defects; (ii) more detailed subcategories of each major category; and (iii) each category scored independently as present [1] or absent [0], simplifying decision making. The aim of this i...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2006.00294.x
更新日期：2006-05-01 00:00:00
abstract：:Vitamin D acts through binding with vitamin D receptor (VDR) and is responsible for regulating bone metabolism and mineralization; it also suppresses the immune system. The aim of this study was to investigate if VDR gene polymorphisms are associated with chronic periodontitis (CP) and aggressive periodontitis (AgP) i...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/eos.12085
更新日期：2013-12-01 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：:To investigate the arrangement of biofilms formed in vivo, volunteers wore splints with slabs of six different dental materials inserted to collect smooth surface plaque. After 5 d of undisturbed plaque accumulation, the specimens were vital stained and analyzed by the confocal laser scanning microscopy (CLSM) to eval...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1046/j.0909-8836.2001.101160.x
更新日期：2002-02-01 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 purpose was to investigate if antigenic fragments of aggrecan and cartilage oligomeric matrix protein (COMP) are detectable by enzyme-linked immunosorbent assay in lavage fluids from the temporomandibular joint (TMJ) and to examine if the relative content of these cartilage markers changes during development of os...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.1997.tb00254.x
更新日期：1997-08-01 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：:Human dentin mineral has been investigated by using micro-Raman spectroscopy. Fluorescence and thermal problems were largely avoided by preparing dentin samples by grinding and ultrasonic agitation in acetone. The Raman spectral features were consistent with those of impure hydroxyapatite containing CO3 and HPO4. Whil...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.1996.tb00056.x
更新日期：1996-04-01 00:00:00
abstract：:Plaque surface area after rinsing with a tea, containing low levels of fluoride, was evaluated in 30 human volunteers with a single-blind, one-operator, three-period, three-treatment cross-over study. The mouthwashes employed were: (1) tea (Darjeeling first flush:< 0.2 ppm F-), (2) Meridol(R), (3) control (tap water:<...
journal_title：European journal of oral sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1111/j.1600-0722.1995.tb01867.x
更新日期：1995-12-01 00:00:00
abstract：:Plasma arc light units for curing resin composites have been introduced with the claim of relatively short curing times. The purpose of the present study was to measure and compare elution of monomers from an experimental BisGMA-TEGDMA resin and a commercial resin composite when cured with a halogen unit and when cure...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1034/j.1600-0722.2000.108004341.x
更新日期：2000-08-01 00:00:00
abstract：:The purpose of the current study was to evaluate the adhesive performance of metal conditioners when used for bonding between auto-polymerizing methacrylic resins and a titanium alloy. Disk specimens were cast from a titanium-aluminum-niobium (Ti-6Al-7Nb) alloy, air-abraded with alumina, and bonded with 24 combination...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1034/j.1600-0722.2003.00017.x
更新日期：2003-04-01 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 objective of this study was to obtain a geographic world map of scientific production in dentistry by analysing published papers. Articles and reviews in the Dentistry, Oral Surgery & Medicine category published from 1999 to 2003 were accessed through the ISI database. The data were analyzed quantitatively (number...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2006.00244.x
更新日期：2006-04-01 00:00:00
abstract：:Inositol polyphosphate 4-phosphatase type II (INPP4B) is a phosphoinositide phosphatase that plays complex roles in the pathogenesis of different tumors. We aimed to explore the expression, clinicopathological significance, and prognostic value of INPP4B in oral squamous cell carcinoma (OSCC). Tissue microarrays that ...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/eos.12673
更新日期：2020-02-01 00:00:00
abstract：:Attention deficit hyperactivity disorder (ADHD) is a common developmental disorder. The present study tested the hypotheses that children with ADHD, particularly those exhibiting severe hyperactivity and impulsivity, have a different stress reaction (measured by salivary cortisol) during a dental recall visit and are ...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.2007.00423.x
更新日期：2007-02-01 00:00:00
abstract：:Treatment programs to prevent perinatal and postnatal HIV-1 transmission have become available in sub-Saharan Africa, leading to an emerging population of HIV-1 exposed uninfected (HEU) children. Exposure to HIV-1 in utero and during breastfeeding may increase the risk of morbidity and mortality in HEU children. This ...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/eos.12669
更新日期：2020-02-01 00:00:00
abstract：:Electromyographic (EMG) recording of masticatory muscle activity was performed in 9 adult men with unilateral condylar fracture immediately after conservative treatment of the condylar fracture (T0) and 4 (T1) and 8 (T2) months after the trauma. From T0 to T2, maximal voluntary contraction of the anterior and posterio...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/j.1600-0722.1997.tb00244.x
更新日期：1997-08-01 00:00:00
abstract：:We examined the effect of warm air-drying on the enamel bond strengths and the surface free-energy of three single-step self-etch adhesives. Bovine mandibular incisors were mounted in self-curing resin and then wet ground with #600 silicon carbide (SiC) paper. The adhesives were applied according to the instructions o...
journal_title：European journal of oral sciences
pub_type： 杂志文章
doi：10.1111/eos.12061
更新日期：2013-08-01 00:00:00
