Abstract：
:Composite resin restorations in cavities are generally associated with the development of a contraction gap during the first minutes after insertion. Enamel-Bond-Concise composite restoration were placed on both approximal sides of extracted pre-molars. The cervical walls of all cavities extended beyond the enamel-cement junction. The enamel walls of one of the cavities in each tooth were acid-etched. The contraction gap was kept air-filled and open at the margin through the use of a special technique. Enamel Bond resin with a fluorescent additive was applied to occlusal and cervical margins of the restorations. The fluorescent resin was "passively" drawn into the gap. In unetched cavities, resin penetrated both cervical and occlusal gaps and some areas of the gap at the axial wall. In cavities with etched enamel, the penetration occurred only at the cervical wall. The distance of penetration from the cervical margin varied from 1 to 6.5 mm, and the width of the contraction gap filled with the fluorescent resin varied from 3.5 to 16 micron. Comparison of the width of the gap at the cervical wall in etched and unetched cavities suggested larger gaps for etched cavities. The method used offers a new technique for the measurement of the contraction gaps around composite resin restorations.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Brännström M,Torstenson B,Nordenvall KJdoi
10.1177/00220345840630051501subject
Has Abstractpub_date
1984-05-01 00:00:00pages
681-4issue
5eissn
0022-0345issn
1544-0591journal_volume
63pub_type
杂志文章abstract：:Relative glycogen synthetic abilities of resting cells of fresh clinical isolates of Actinomyces viscosus and Actinomyces naeslundii originating from dental plaque samples over root surface caries lesions and non-carious sites were studied under anaerobic conditions at a constant pH of 7.0, with U-(14C)-glucose used a...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345860650060701
更新日期：1986-06-01 00:00:00
abstract：:The human mandibular condyle has a parasagittal plate-like trabecular structure. We tested the hypothesis that this structure reflects the mechanical loading of the condyle. We developed a finite element model of the condyle to analyze the strains occurring during static compressive loading. The principal strains in t...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910208101010
更新日期：2002-10-01 00:00:00
abstract：:The biogenetic formation of mineral crystals, one aspect of biomineralization, is a multistep process of apatite formation throughout the growth of dentin tissue. An important step is the transformation of the non-mineralized predentin matrix to mineralizing dentin matrix and its biological control. In this study, the...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345980770081401
更新日期：1998-08-01 00:00:00
abstract：:The accelerating activity of N,N-substituted aminoethyl methacrylates on the curing of methyl methacrylate and composite resins with benzoyl peroxide is somewhat smaller than that of dimethyl-p-toluidine. Tesins cured with aminoethyl methacrylates containing a p-tolyl and 3,5-xylyl substituent on the nitrogen atom tur...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345750540041301
更新日期：1975-07-01 00:00:00
abstract：:Previously, in vitro differentiation of odontoblasts was shown for dental pulp stem cells (DPSCs) transfected with bone morphogenetic protein-2 (Bmp2). For this study, we hypothesized that such cells also show potential for mineralized tissue formation in vivo. DPSCs were transfected with Bmp2 and seeded onto a cerami...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034509346258
更新日期：2009-11-01 00:00:00
abstract：:The tongue plays an important role in mastication and swallowing by its contact with the hard palate. Using an experimental palatal plate with 7 pressure sensors, and recording jaw movement using mandibular kinesiography, we assessed, in healthy subjects, the coordination of tongue and jaw movements during the entire ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910608500214
更新日期：2006-02-01 00:00:00
abstract：:Cyclic adenosine 3',5'-monophosphate (cAMP) concentrations and cellular distribution were studied in dental and periodontal tissues during tooth eruption in kittens. Although the mean levels of cAMP around developing teeth were similar in all the tissue samples, there were marked differences in cAMP stainability of ti...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345770560040801
更新日期：1977-04-01 00:00:00
abstract：:The eventual outcome of dental caries is determined by the dynamic balance between pathological factors that lead to demineralization and protective factors that lead to remineralization. Pathological factors include acidogenic bacteria, inhibition of salivary function, and frequency of ingestion of fermentable carboh...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/154405910408301s08
更新日期：2004-01-01 00:00:00
abstract：:Four disclosant dyes were tested for antimicrobial activity against 27 oral reference strains and five non-oral human pathogens. Erythrosine and fluorescein inhibited most gram-positive and gram-negative organisms associated with dental plaque, and were bactericidal to selected strains. Fast green and brilliant blue d...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345830620071601
更新日期：1983-07-01 00:00:00
abstract：:The range of substrates transported by the sugar-binding protein-dependent msm (multiple sugar metabolism) system of S. mutans was investigated. By determining the ability of unlabeled sugar to compete with radiolabeled melibiose transport, we have demonstrated that the transported sugars included a number of carbohyd...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345930720100701
更新日期：1993-10-01 00:00:00
abstract：:Occlusal alterations may result in changes in the functional performance of masticatory muscles. In this study, we set up an experimental model in rats to examine whether masticatory muscle abnormalities occur after a malocclusion is induced. Rats underwent unilateral amputation of the molar cusps to simulate an occlu...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345990780111101
更新日期：1999-11-01 00:00:00
abstract：:Dental enamel formation is a remarkable example of a biomineralization process. The exact mechanisms involved in this process remain partly obscure. Some of the genes encoding specific enamel proteins have been indicated as candidate genes for amelogenesis imperfecta. Mutational analyses within studied families have s...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/154405910508401206
更新日期：2005-12-01 00:00:00
abstract：:Modulation of the phosphoinositide signal transduction pathway by arachidonic acid (AA) in collagenase-dispersed rat submandibular acinar cells was investigated. The muscarinic agonist, carbachol, stimulated PIP2 hydrolysis and the generation of IP3 to five-fold the control levels. This response was inhibited by 75% o...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345920710080101
更新日期：1992-08-01 00:00:00
abstract：:The dentition in zebrafish is extremely and richly vascularized, but the function of the vasculature, in view of the continuous replacement of the teeth, remains elusive. Through application of SU5416, a vascular endothelial growth factor receptor inhibitor, we studied the role of the blood vessels in the dentition of...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514557156
更新日期：2015-01-01 00:00:00
abstract：:Vascular endothelial growth factor (VEGF) is a potent inducer of angiogenesis, vascular permeability, and edema. Up-regulation of VEGF expression in the dental pulp may result in increased intra-pulpal pressure, and contribute to pain and irreversible tissue damage. Lipoteichoic acid (LTA) is an amphiphilic molecule f...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910308200612
更新日期：2003-06-01 00:00:00
abstract：:Sense of coherence (SOC) has been related to oral health behaviors and oral-health-related quality of life (OHRQoL) in observational studies. This cluster-randomized trial aimed to test the effect of an intervention to enhance SOC on OHRQoL in children. Twelve primary schools were randomly allocated to intervention an...
journal_title：Journal of dental research
pub_type： 杂志文章,随机对照试验
doi：10.1177/0022034512459757
更新日期：2013-01-01 00:00:00
abstract：:The aim of this study was to investigate the involvement of autoimmune reactions to native and post-translationally modified extracellular matrix components in the pathogenesis of periodontitis. Sera from individuals with aggressive periodontitis (AgP, n = 25), chronic periodontitis (CP, n = 14), and gingivitis (G, n ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034510381903
更新日期：2010-12-01 00:00:00
abstract：:Light propagation in human dentin exhibits a strong directional dependence featuring the long-known optical magnification property. We hypothesized that this anisotropic effect is caused by multiple scattering at the dentin tubules, and not by fiberoptic effects, as had been previously assumed. We performed measuremen...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910608501017
更新日期：2006-10-01 00:00:00
abstract：:Mixed or parotid saliva from caries-active individuals consistently supported better growth of Streptococcus mutans (type c) than that from caries-free individuals. Electrophoretic studies revealed that certain proteins in caries-active salivas were susceptible to microbial attack, but similar proteins in caries-free ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345790580101501
更新日期：1979-10-01 00:00:00
abstract：:This 24-mo randomized controlled trial was based on a double-blind parallel design, and it compared the effectiveness of 2 fluoride application protocols in arresting dentine caries in primary teeth. Three-year-old children with active dentine caries were recruited and randomly allocated to 2 treatment groups. Childre...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520952031
更新日期：2021-01-01 00:00:00
abstract：:Stress-relaxation measurements were performed on specimens of radicular human dentin. The relaxation modulus showed a linear dependence on the logarithm of time and the approximation to the logarithmic distribution function of relaxation times was used to predict the behavior of other viscoelastic properties. This exp...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345750540061801
更新日期：1975-11-01 00:00:00
abstract：:Bone marrow-derived mesenchymal stem/progenitor cells (BMSCs) are commonly used in regeneration therapy. The current primary source of BMSCs is the iliac crest; however, the procedure is associated with various burdens on the patient, including the risk of pain and infection. Hence, the possibility to collect BMSCs fr...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514549377
更新日期：2014-11-01 00:00:00
abstract：:We examined 102 children born and reared in an area of rural Kenya with 2 ppm fluoride in the drinking water for dental fluorosis, using the index developed by Thylstrup and Fejerskov (1978). The prevalence of dental fluorosis was 100%, 92% of all teeth exhibited a TFI score of 4 or higher, and 50% of the children had...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345860650050501
更新日期：1986-05-01 00:00:00
abstract：:The limited durability of resin-dentin bonds severely compromises the lifetime of tooth-colored restorations. Bond degradation occurs via hydrolysis of suboptimally polymerized hydrophilic resin components and degradation of water-rich, resin-sparse collagen matrices by matrix metalloproteinases (MMPs) and cysteine ca...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034510391799
更新日期：2011-08-01 00:00:00
abstract：:In an attempt to make a dynamic study of the isoelectric point and the chargeability of human dental enamel, an electrochemical approach was utilized. Zeta potential of three kinds of the enamel was measured by a streaming potential method. As a result, these isoelectric points could be decided. ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345780570022701
更新日期：1978-02-01 00:00:00
abstract：:The junctional epithelium (JE) is unique with regard to its wide intercellular spaces and sparsely developed intercellular junctions. Thus, knowledge of the molecular mechanisms that regulate the formation of the intercellular junctions of the junctional epithelium may be essential to understand the pathophysiology of...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034515619375
更新日期：2016-03-01 00:00:00
abstract：:An intra-oral model system has been developed which uses a single-section technique for before-and-after measurements on the same tissue. This model allows for placement of sections of enamel at both buccal and approximal sites. These sections may be sound or possess white-spot lesions. This allows for the evaluation ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660091401
更新日期：1987-09-01 00:00:00
abstract：:In the past two decades, accumulated evidence has clearly demonstrated the inhibitory effects of laser irradiation on enamel demineralization, but the exact mechanisms of these effects remain unclear. The purpose of this study was to investigate the effects of low-energy CO2 laser irradiation on demineralization of bo...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345000790091401
更新日期：2000-09-01 00:00:00
abstract：:Porcine dentin sialophosphoprotein (DSPP) is the most abundant non-collagenous protein in dentin. It is processed by proteases into 3 independent proteins: dentin sialoprotein (DSP), dentin glycoprotein (DGP), and dentin phosphoprotein (DPP). We fractionated DPP and DSP along with TGF-β activity by ion exchange (IE) c...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514534690
更新日期：2014-07-01 00:00:00
abstract：:In the past decade, medical genetic research has generated multiple discoveries, many of which were obtained via genome-wide association studies (GWASs). A major GWAS finding is that the majority of risk variants for complex traits map to noncoding regions. This has resulted in a paradigm shift in terms of the interpr...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034517720403
更新日期：2017-10-01 00:00:00
