Abstract：
:Setting reactions and compressive strengths of a self-hardening calcium phosphate cement (CPC) were investigated. The CPC consists of tetracalcium phosphate (TTCP) and anhydrous dicalcium phosphate (DCPA). The cement specimens were prepared by mixing 0.7 g of the powder (TTCP 72.9 wt% + DCPA 27.1 wt%) with 0.175 mL of the liquid (25 mmol/L H3PO4 and 1.32 mmol/L sodium fluoride). The specimens were removed from the molds at pre-determined time intervals after being mixed, and their compressive strengths were measured. Immediately afterward, the fractured specimens were rapidly frozen in ethanol (-80 degrees C), lyophilized, and examined by powder x-ray diffraction and scanning electron microscopy (SEM). The results showed that (1) hydroxyapatite was the only reaction product; (2) the reaction was nearly completed within four h, during which both the reaction product and compressive strength increased linearly with time, resulting in a strong correlation between the two; and (3) fully set CPC consisted primarily of small rod-like crystals and some platy crystals.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Fukase Y,Eanes ED,Takagi S,Chow LC,Brown WEdoi
10.1177/00220345900690121201subject
Has Abstractpub_date
1990-12-01 00:00:00pages
1852-6issue
12eissn
0022-0345issn
1544-0591journal_volume
69pub_type
杂志文章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：:Dispersed salivary acini isolated from the rat submandibular gland by enzymatic digestion were used to study the effects of alpha-receptor stimulation on transmembrane transport of 36Cl. In the absence of secretagogue, the tracer accumulated in the cells in a time-dependent manner until a steady-state content of 6.8 +...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345880670030701
更新日期：1988-03-01 00:00:00
abstract：:A previously reported technique for staining areas of degradation in dental composite restorations was evaluated in 51 removed restorations. The staining reagent was silver nitrate, which penetrated the degraded subsurface as ionic silver and was subsequently developed into colored deposits of metallic silver. Several...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345910700031201
更新日期：1991-03-01 00:00:00
abstract：:The expression of antimicrobial peptides at epithelial surfaces such as skin, lung, and intestine is thought to provide protection against infection. Cathelicidin antimicrobial peptides are essential for the protection of skin against invasive bacterial infection. To determine if cathelicidins are also present in the ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910208101210
更新日期：2002-12-01 00:00:00
abstract：:The pellicle serves as a multifunctional protective layer, providing, e.g., lubrication and remineralization and also acting as a diffusion barrier. In addition, since the formation of the pellicle precedes the adhesion of micro-organisms, it is also important as a conditioning film. We present a novel approach to stu...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034512456704
更新日期：2012-10-01 00:00:00
abstract：:The oral microbiota was compared between Romanian adolescents with a high prevalence of caries and no dental care and Swedish caries-active and caries-free adolescents in caries prevention programs and with a low prevalence of caries. Biofilm samples were analyzed by FLX+ pyrosequencing of the V1 to V4 hypervariable r...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034515609554
更新日期：2016-01-01 00:00:00
abstract：:Nitric oxide (.NO) modulates the activity of the endocrine system in the behavioral response to stress. The purpose of this study was to investigate the effect of restraining the body of an animal on expression of neuronal nitric oxide synthase (nNOS) in the paraventricular nucleus (PVN) of the hypothalamus, and the i...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910508400708
更新日期：2005-07-01 00:00:00
abstract：:The cacao bean husk has been shown to possess two types of cariostatic substances, one showing anti-glucosyltransferase (GTF) activity and the other antibacterial activity, and to inhibit experimental dental caries in rats infected with mutans streptococci. In the present study, chromatographic purification revealed h...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345010800111001
更新日期：2001-11-01 00:00:00
abstract：:The Wingless/integrase-1 (Wnt) family of protein ligands and their functional antagonists, secreted frizzled-related proteins (sFRPs), regulate various biological processes ranging from embryonic development to immunity and inflammation. Wnt5a and sFRP5 comprise a typical ligand/antagonist pair, and the former molecul...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034516687248
更新日期：2017-05-01 00:00:00
abstract：:The aim of this study was to assess the changes occurring in subgingival biofilm composition and in the periodontal clinical parameters of subjects with periodontitis and type 2 diabetes mellitus (DM) treated by means of scaling and root planing (SRP) only or combined with systemic metronidazole (MTZ) and amoxicillin ...
journal_title：Journal of dental research
pub_type： 杂志文章,随机对照试验
doi：10.1177/0022034516639274
更新日期：2016-07-01 00:00:00
abstract：:Selected anaerobic, capnophilic and facultative bacteria isolated from patients with various forms of periodontal health and disease were tested for their susceptibility to antibiotics and antimicrobial agents. Specific bactericidal and minimum inhibitory concentrations were compared to disc zone diameters, thereby ge...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345790580071401
更新日期：1979-07-01 00:00:00
abstract：:The creatinine-adjusted urinary concentration of mercury in 73 schoolchildren with a mean age of 12 years was determined. In addition, the number of amalgam restorations and their size, prevalence of allergy, and days absent from school due to illness were recorded for each individual. A significant positive correlati...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660061701
更新日期：1987-06-01 00:00:00
abstract：:Radiation therapy for head and neck cancer results in severe secondary side-effects in salivary glands. We previously demonstrated that the administration of IGF1 preserves or restores salivary gland function following radiation. Based on these findings, we propose to study the effect of IGF1 on human head and neck ca...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034510388037
更新日期：2011-03-01 00:00:00
abstract：:Silver cations generated by passing low intensity direct current through pure silver electrodes were found to be sufficiently antibacterial to cause sterilization of samples of infected dentin. The optimal procedure involved a 5 microA current applied for 20 minutes with the anode then left in contact with the sample....
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345780570091901
更新日期：1978-09-01 00:00:00
abstract：:The ability of human oral bacteria to inhibit Streptococcus mutans was studied under a variety of in vitro conditions using an agar overlay assay. Extensive inherent variability in microbial antagonism by certain organisms was demonstrated. Antagonistic activity was also significantly influenced by changes in the assa...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590110501
更新日期：1980-11-01 00:00:00
abstract：:The effect of inflammation on the distribution of chondroitin sulfate and dermatan sulfate proteoglycans was assessed after normal and inflamed human gingivae were stained with monoclonal antibodies against these extracellular matrix macromolecules. The tissues were obtained following periodontal surgery and reacted w...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345920710090801
更新日期：1992-09-01 00:00:00
abstract：:Dental pulp regeneration therapy for the pulpless tooth has attracted recent attention, and clinical trial studies are underway with the tissue engineering approach. However, there remain many concerns, including the extended period for regenerating the dental pulp. In addition, the use of scaffolds increases the risk...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034518772260
更新日期：2018-09-01 00:00:00
abstract：:The term "artificial intelligence" (AI) refers to the idea of machines being capable of performing human tasks. A subdomain of AI is machine learning (ML), which "learns" intrinsic statistical patterns in data to eventually cast predictions on unseen data. Deep learning is a ML technique using multi-layer mathematical...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520915714
更新日期：2020-07-01 00:00:00
abstract：:Tritiated proline was administered to domestic cats during the development of their permanent dentition. The amount of residual radioactivity was determined autoradiographically at various times after cavity preparation in mature molars and premolars. Two wk after cavity preparation, the amount of radiolabel beneath t...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345820610090101
更新日期：1982-09-01 00:00:00
abstract：:The relationship between periodontitis and systemic bone mineral density in Japanese women is undetermined. We tested the hypothesis that periodontitis was more frequent in women with low metacarpal bone mineral density (m-BMD). Subjects were 190 Japanese women (89 premenopausal, 101 post-menopausal). Periodontal stat...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345010800090901
更新日期：2001-09-01 00:00:00
abstract：:A radiotracer technique was used to study silver and gold diffusion into dental porcelain under experimental conditions close to the real conditions in prosthetic laboratories for porcelain bakes. It was clearly shown that these non-oxidizable elements were able to diffuse into the ceramic as well as oxidizable ones. ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660120401
更新日期：1987-12-01 00:00:00
abstract：:The kinetics of subsurface demineralization of tooth sections has been studied in real-time by scanning microradiography (SMR). Demineralization was carried out: (1) with a large volume of solution buffered to pH = 4 to maintain a constant composition; and (2) in a small constant volume (approximately 3 mL), buffered ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345930720051401
更新日期：1993-05-01 00:00:00
abstract：:The aim of this study was to investigate whether the release of fluoride and the antimicrobial effect of freshly mixed glass ionomers could be prolonged by application of fluoride on aged material. Test slabs of freshly mixed and aged (14 d in water) conventional and silver glass ionomer (Ketac-Fil and Ketac-Silver, E...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345930720090901
更新日期：1993-09-01 00:00:00
abstract：:Repulsive magnetic appliances can intrude posterior teeth, but create a lateral shift of the mandible and also decrease in force as the mouth opens. To model their optimal use, the 3-D spatial force/displacement (F/D) and moment/displacement (M/D) diagrams of four magnetic repulsive appliances in diverse overlapping a...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345940730010901
更新日期：1994-01-01 00:00:00
abstract：:The tissue-implant interfaces of functional and non-functional endosseous dental implants were compared histologically for up to one year post-operatively. Nonmineralized connective tissue zones (a "fibrous capsule") existed in all functional interfaces. Direct, or nearly direct, bone apposition to implants occurred i...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345790580100201
更新日期：1979-10-01 00:00:00
abstract：:Morphogenesis (germ-tube formation) in Candida albicans was induced gratuitously by N-acetylhexosamine derivatives (N-acetyl-glucosamine covalently linked to agarose, N-acetylmannosamine, hyaluronic acid, colloidal chitin, and mucin). These compounds were not taken up by the yeast cells and did not support growth. 2-D...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345840630031501
更新日期：1984-03-01 00:00:00
abstract：:Local anesthetic agents may be classified according to their intrinsic anesthetic potency and duration of activity. Procaine and chloroprocaine are relatively weak, short-acting drugs. Lidocaine, mepivacaine, and prilocaine represent agents of intermediate potency and duration of action. Tetracaine, bupivacaine, and e...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345810600080903
更新日期：1981-08-01 00:00:00
abstract：:Enamel fluorosis can occur following either an acute or chronic exposure to fluoride during tooth formation. Fluorosed enamel is characterized by a retention of amelogenins in the early-maturation stage, and by the formation of a more porous enamel with a subsurface hypomineralization. The mechanisms by which fluoride...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/00220345920710051701
更新日期：1992-05-01 00:00:00
abstract：:Previous studies have demonstrated that antibodies against cholinoreceptors of exocrine glands correlate with dry mouth in persons with primary Sjögren syndrome (pSS). The aim of the present investigation was to establish if serum IgG antibodies (pSS IgG) were able to interact with cholinoreceptors in rat submandibula...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910708600905
更新日期：2007-09-01 00:00:00
abstract：:In cases of pulp exposure due to deep dental caries or severe traumatic injuries, existing pulp-capping materials have a limited ability to reconstruct dentin-pulp complexes and can result in pulpectomy because of their low potentials to accelerate dental pulp cell activities, such as migration, proliferation, and dif...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034516653085
更新日期：2016-10-01 00:00:00
