Abstract：
:The microstructure of the set glass-polyalkenoate cement has not been undertaken beyond a study where an Electron Probe Micro Analyser was used. The purpose of this investigation was to determine the ion distribution in matrix parts of the set cement by means of Secondary Ion Mass Spectrometry (SIMS). Among the techniques for surface and microscopic analysis, SIMS is said to be the one with the highest sensitivity. O2+ ions were used as the beam probe to detect silicon, aluminum, calcium, sodium, and carbon. The scanning images showed a clear difference among these elements in their distribution. A large amount of aluminum was found throughout the matrix area, with only a slight concentration gradient, while silicon appeared to be concentrated on the surface of the undissolved glass core. The distribution pattern of calcium was not as clear as that shown by aluminum and silicon. A comparatively higher content of carbon was found closer to the glass surface. These results indicate that aluminum plays an essential role in the setting of the matrix and the surface of the glass dissolved by acrylic acid and changed into the siliceous gel.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Maeda T,Mukaeda K,Shimohira T,Katsuyama Sdoi
10.1177/00220345990780011301keywords:
subject
Has Abstractpub_date
1999-01-01 00:00:00pages
86-90issue
1eissn
0022-0345issn
1544-0591journal_volume
78pub_type
杂志文章abstract：:TWIST1 plays a crucial role in dentinogenesis, and its activity depends on both a dimerization partner selection and phosphorylation. Other factors, like Id proteins, can affect the availability of dimerization partners for TWIST1, subsequently leading to diverse biological outcomes. The purpose of this study was to e...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514530164
更新日期：2014-06-01 00:00:00
abstract：:This study indicated that a clear relationship exists between silicon and fluoride. We have also demonstrated a probable surface enamel silicon effect that increases fluoride uptake. The complex set of relationships described in the surface chemistry of calcium, tin, and zirconium with fluoride, hydroxide, phosphate, ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345760550050601
更新日期：1976-09-01 00:00:00
abstract：:Dental caries can be described as a dysbiosis of the oral microbial community, in which acidogenic, aciduric, and acid-adapted bacterial species promote a pathogenic environment, leading to demineralization. Alkali generation by oral microbes, specifically via arginine catabolic pathways, is an essential factor in mai...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034517707512
更新日期：2017-07-01 00:00:00
abstract：:Cleidocranial dysplasia (CCD) is a skeletal dysplasia caused by heterozygous mutations of RUNX2, a gene that is essential for the mineralization of bone and tooth. We isolated primary dental pulp cells from a 10-y-old patient and tested their proliferative capacity, alkaline phosphatase activity, and ability to form m...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514566655
更新日期：2015-04-01 00:00:00
abstract：:Khat-chewing has been associated with oral lesions including oral cancer, but the mechanisms leading to their development are not known. We hypothesized that khat interferes with the physiological processes of the oral mucosa, such as cell proliferation and differentiation, and aimed at investigating the effects of kh...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034509354980
更新日期：2010-03-01 00:00:00
abstract：:Although it has been shown that patients are more satisfied with prostheses supported by implants than with conventional dentures, there have been few direct comparisons of the various designs of implant-supported prostheses. This within-subject crossover clinical trial was designed to compare two forms of removable p...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章
doi：10.1177/00220345970760100901
更新日期：1997-10-01 00:00:00
abstract：:Focusing public insurance programs on interceptive orthodontics (IO) may increase access for low-income children. This report presents outcomes from a randomized clinical trial (RCT) comparing IO with comprehensive orthodontics (CO) in Medicaid patients. One hundred seventy pre-adolescents with Medicaid-eligible maloc...
journal_title：Journal of dental research
pub_type： 杂志文章,随机对照试验
doi：10.1177/0022034512448663
更新日期：2012-07-01 00:00:00
abstract：:Adhesive bonding of resins to dentin surfaces requires the removal of the layer of debris caused by the cutting. Certain isotonic acidic solutions can do this rapidly. Five solutions were evaluated using cell cultures and pulp studies in monkeys. At concentrations above 10%, each solution caused the cultured human epi...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345820610081001
更新日期：1982-08-01 00:00:00
abstract：:The mechanism of formation of nodular material on the surface of a Pd-Ag-based alloy for porcelain during pre-porcelainization heat treatment was investigated using scanning electron microscopy, x-ray diffraction, quantitative metallography, and Auger electron spectroscopy. The nodules were found to form by a Nabarro-...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345830620121201
更新日期：1983-12-01 00:00:00
abstract：:To date, the precise etiology of molar-incisor hypomineralization (MIH) is uncertain. Vitamin D plays a key role in hard tissue formation. Therefore, this study aimed to analyze the relationship between serum 25-hydroxy-vitamin D (25(OH)D) status and dental health data obtained from 1,048 children in a 10-year follow-...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514561657
更新日期：2015-02-01 00:00:00
abstract：:Erupting first permanent molars of 5 1/2 to 6 1/2 year-olds are eminently suited for the clinical testing of potential caries-inhibiting techniques. Due to the rapid onset of caries in these teeth, accurate monitoring of new materials/regimes can be instituted and meaningful data obtained within one year of trial comm...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章
doi：10.1177/002203457705600301011
更新日期：1977-10-01 00:00:00
abstract：:Disks of dentin taken from extracted human teeth demonstrated the optical property of the magnification/reduction effect. When images were transmitted from a pulpal-to-occlusal direction, the images were magnified. When the disks were inverted, the images were reduced in size. The images were slightly distorted but cl...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345760550041601
更新日期：1976-07-01 00:00:00
abstract：:Biological evaluation procedures for the acceptance of new dental materials include testing for mucous membrane irritation and inflammation, with the hamster cheek pouch used as a model system. Previous reports have indicated both a low 14-day implant retention rate and poor differentiation between positive and negati...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345860650111801
更新日期：1986-11-01 00:00:00
abstract：:The pathomechanics of degenerative joint disease of the temporomandibular joint (TMJ) may involve fatigue produced by mechanical work on the articulating tissues. This study tested the hypotheses that mechanical work in the TMJ (i) varies with the type of mandibular activity, and (ii) is evenly distributed over TMJ su...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910608501106
更新日期：2006-11-01 00:00:00
abstract：:The oral cavity contains a rich consortium of exopolysaccharide-producing microbes. These extracellular polysaccharides comprise a major component of the oral biofilm. Together with extracellular proteins, DNA, and lipids, they form the biofilm matrix, which contributes to bacterial colonization, biofilm formation and...
journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034519845001
更新日期：2019-07-01 00:00:00
abstract：:Minimizing patient exposure while maintaining a diagnostically acceptable radiograph is a major goal in diagnostic radiography. Rare-earth filters may be the means to achieve this goal due to their "band-pass effect". The purpose of this study was to examine the image contrast effects and exposure reductions for vario...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660080701
更新日期：1987-08-01 00:00:00
abstract：:In comparison with control rats. chronic administration of isoproterenol (IPR) caused enlargement of the parotid and submandibular glands and the synthesis of apparently new proteins, probably by acinar cells. The parotid and submandibular saliva secreted in response to methoxamine or IPR differed markedly in protein ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590062001
更新日期：1980-06-01 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 reaction of the microvasculature in the periodontal ligament to mechanical pressure is considered a very important phenomenon with respect to the biological background to orthodontic tooth movement. For clarification of the microvascular reaction to mechanical pressure, an experimental model that incorporated a ha...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345920710060701
更新日期：1992-06-01 00:00:00
abstract：:Growth factors such as epidermal growth factor (EGF) and transforming growth factor-alpha (TGF-alpha) play an important role in cell proliferation during embryogenesis. The purposes of the study were to characterize the expression patterns of EGF and TGF-alpha and their receptor, EGF receptor (EGF-R), and to analyze r...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345960750080301
更新日期：1996-08-01 00:00:00
abstract：:The cartilaginous nasal septa of 28 albino rats were marked with pairs of wire implants. Measurements obtained from cephalometric radiographs taken at 30 and 60 days revealed that the implants invariably separatd and did so at a rate that was highly correlated with the growth of the rest of the snout. ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590081601
更新日期：1980-08-01 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：:Dental caries is a microbially mediated disease that can result in significant tooth structure degradation. Although the preponderance of lesions is treated by surgical intervention, various strategies have been developed for its noninvasive management. Here, we use a novel approach for noninvasive treatment based on ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034515619370
更新日期：2016-03-01 00:00:00
abstract：:The most frequent complaints registered against composite restorations are stained margins and a rough surface. The stained margins have many causes such as (1) fracturing or crazing of enamel during preparation of the cavity, (2) using a composite having an excessive curing shrinkage, (3) manipulating too slowly, whi...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345790580052101
更新日期：1979-05-01 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：:A plaque growth chamber was developed for long-term growth of five separate plaques from the same plaque or saliva sample under identical conditions of temperature and gas phase. Reagent addition and growth conditions for each plaque could be independently controlled, and each was accessible for sequential sampling an...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345910700110301
更新日期：1991-11-01 00:00:00
abstract：:The adsorption isotherms of benzoic acid on synthetic hydroxyapatite (containing about 1.5 monolayers of physisorbed water) were studied from ethanol, dimethylsulfoxide, p-dioxane, methylene chloride, and benzene to discern the role of solvent in the process. The adsorption is reversible from the first three solvents ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345860650051601
更新日期：1986-05-01 00:00:00
abstract：:Over the last hundred years, groundbreaking research in oral microbiology has provided a broad and deep understanding about the oral microbiome, its interactions with our body, and how the community can affect our health, be protective, or lead to the development of dental diseases. During this exciting journey, hypot...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034519830686
更新日期：2019-04-01 00:00:00
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...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345900690121201
更新日期：1990-12-01 00:00:00
abstract：:Autonomic and behavioral responses to seven dental procedures were studied in 21 pedodontic patients aged six to 12. When mean pulse rate, pulse amplitude, absolute skin conductance, and skin-conductance responses were compared over all subjects, the injection of the local anesthetic consistently elicited the greatest...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345830620060801
更新日期：1983-06-01 00:00:00
