An explanation for the "two fiber axes" problem in human enamel by x-ray diffraction.

abstract：:The oral microbiome is one of the most stable ecosystems in the body and yet the reasons for this are still unclear. As well as being stable, it is also highly diverse which can be ascribed to the variety of niches available in the mouth. Previous studies have focused on the microflora in disease-either caries or peri...

journal_title：Journal of dental research

authors： Carpenter GH

更新日期：2020-06-01 00:00:00

abstract：:Better understanding of dental caries and other oral conditions has guided new strategies to prevent disease and manage its consequences at individual and public health levels. This article discusses advances in prevention and minimal intervention dentistry over the last century by focusing on some milestones within s...

journal_title：Journal of dental research

authors： Innes NPT,Chu CH,Fontana M,Lo ECM,Thomson WM,Uribe S,Heiland M,Jepsen S,Schwendicke F

更新日期：2019-06-01 00:00:00

abstract：:An analysis of the relationship between creep and microstructural characteristics of several gamma2-containing amalgams showed the grain size of the Ag-Hg phase (gamma1) to be a predominant factor influencing creep. When gamma1 grain size is increased, creep is reduced. ...

journal_title：Journal of dental research

authors： Mahler DB,Adey JD,Marantz RL

更新日期：1977-12-01 00:00:00

abstract：:Inflammatory conditions as they occur during periodontal disease often result in decreased alveolar bone levels and a loss of connective tissue homeostasis. Here we have focused on the effect of microRNA-138 (miR-138) as a potential regulator of periodontal stem cells as they affect homeostasis during inflammatory con...

journal_title：Journal of dental research

authors： Zhou X,Luan X,Chen Z,Francis M,Gopinathan G,Li W,Lu X,Li S,Wu C,Diekwisch TG

更新日期：2016-02-01 00:00:00

abstract：:Levels of mutans streptococci in plaque samples from margins of Class II amalgam (Dispersalloy), composite (P-10), and glass-ionomer (Ketac Silver) restorations were compared. Fifty-one children, each having one of the restorations in a permanent first molar, were part of an inter-individual comparison, giving 17 rest...

journal_title：Journal of dental research

authors： Svanberg M,Mjör IA,Orstavik D

更新日期：1990-03-01 00:00:00

abstract：:1) A new adhesive opaque resin containing a reactive monomer, 4-methacryloxy-ethyl trimellitate anhydride (4-META), was prepared, and its application to thermosetting acrylic resin veneer crowns was studied. 2) The 4-META opaque resin was applied to a variety of nickel-chromium dental alloy specimens which had undergo...

journal_title：Journal of dental research

authors： Tanaka T,Nagata K,Takeyama M,Atsuta M,Nakabayashi N,Masuhara E

更新日期：1981-09-01 00:00:00

abstract：:Dietary components rich in polyphenols-for example, tea and red wine-are thought to cause tooth staining. In the present study, hydroxyapatite was used as a model of enamel for study of the influence of salivary proteins on the binding of different polyphenols to hydroxyapatite in vitro. Neither salivary protein pelli...

journal_title：Journal of dental research

authors： Proctor GB,Pramanik R,Carpenter GH,Rees GD

更新日期：2005-01-01 00:00:00

abstract：:Human tooth wear occurs so slowly that traditionally it has needed months or years to be measurable. This study showed that microscopic changes in wear patterns on human teeth could be detected in a matter of days and could be used as indicators of rates of wear. Thus, daily or weekly changes in rates of wear can be d...

journal_title：Journal of dental research

authors： Teaford MF,Tylenda CA

更新日期：1991-03-01 00:00:00

abstract：:A/Jax mice were injected with 50 muCi of 3H cortisol and 10 mg of cortisone acetate on day 12 of gestation. At various intervals after injection, the maternal liver, placenta, yolk sac, and the fetal jaws were removed and analyzed by thin-layer chromatography in conjunction with oxidative combustion and liquid scintil...

journal_title：Journal of dental research

authors： Spain KM,Kisieleski W,Wood NK

更新日期：1975-09-01 00:00:00

abstract：:In previous studies, light-cured glass-ionomer cements have been shown to evoke cytotoxic reactions. It was the purpose of this investigation (a) to determine the nature of the ingredients released into an aqueous medium from 2 light-cured glass-ionomer cements (GICs) and 3 compomers; (b) to evaluate the cytotoxicity ...

journal_title：Journal of dental research

authors： Geurtsen W,Spahl W,Leyhausen G

更新日期：1998-12-01 00:00:00

abstract：:Titanium-polymethacrylate composite was prepared as an x-ray-opaque filler for composite core materials. The base monomers of the composite were 2,2-bis [4-(3-methacryloyloxy-2-hydroxypropoxy) phenyl] propane (Bis-GMA) and triethyleneglycol dimethacrylate (TEGDMA). Pure titanium powder was used as a radiopaque element...

journal_title：Journal of dental research

authors： Matsumura H,Sueyoshi M,Atsuta M

更新日期：1992-01-01 00:00:00

abstract：:The importance of assessing the impact of treatments for chronic conditions on an individual's quality of life has been well-established. In this randomized clinical trial, oral-health-related quality of life, measured with the Oral Health Impact Profile (OHIP), was compared between two groups of edentulous patients. ...

journal_title：Journal of dental research

authors： Awad MA,Locker D,Korner-Bitensky N,Feine JS

更新日期：2000-09-01 00:00:00

abstract：:Phosphatases are involved in bone and tooth mineralization, but their mechanisms of action are not completely understood. Tissue-nonspecific alkaline phosphatase (TNAP, ALPL) regulates inhibitory extracellular pyrophosphate through its pyrophosphatase activity to control mineral propagation in the matrix; mice without...

journal_title：Journal of dental research

authors： McKee MD,Yadav MC,Foster BL,Somerman MJ,Farquharson C,Millán JL

更新日期：2013-08-01 00:00:00

abstract：:Dissolution of mercury from the Ag-Hg matrix phase of dental amalgam is distilled water and synthetic saliva, and the mercury evaporation from the solutions, were studied in vitro. The main objectives of the study were to evaluate the factors that affect the results of the mercury release tests, and to consider the po...

journal_title：Journal of dental research

authors： Marek M

更新日期：1990-05-01 00:00:00

abstract：:Although a secular decline is being seen in coronal caries in children in industrialized countries, there appears to be a relatively high prevalence of root caries, with chronologically older adults exhibiting the highest prevalences. This paper reviews the descriptive and analytical epidemiology of root caries as fou...

journal_title：Journal of dental research

authors： Beck J

更新日期：1990-05-01 00:00:00

abstract：:Potassium ions in dentifrices for treating 'hypersensitive' dentin are believed to act directly on intradental nerves by raising extracellular potassium ion concentration ([K+]o) sufficiently to prevent action potential generation by axonal accommodation. However, the [K+]o necessary to block nerve conduction is not p...

journal_title：Journal of dental research

authors： Peacock JM,Orchardson R

更新日期：1995-02-01 00:00:00

abstract：:Sealants are highly effective in preventing dental caries in the pits and fissures of teeth when applied by trained operators in clinical trials and public health programs. The effectiveness of fissure sealants when applied in dental practices is still not known. The purpose of this longitudinal study was to evaluate ...

journal_title：Journal of dental research

authors： Ismail AI,Gagnon P

更新日期：1995-09-01 00:00:00

abstract：:Incisors of Mg-deficient rats showed a marked inhibition of eruption and a decrease in mitoses of apical tissues. Cortisone administration resulted in some increase in eruption rate and cell division though these remained below the values of Mg-supplemented controls. An improvement in gross condition and a less severe...

journal_title：Journal of dental research

authors： Kiely ML,Domm LV

更新日期：1977-12-01 00:00:00

abstract：:Candida colonization of the oral cavity increases in the elderly. A major predisposing condition is denture use, which also increases in the elderly. To test whether the increase in colonization is age-related in a fashion independent of denture use, we analyzed the frequency (incidence) of carriage, the intensity of ...

journal_title：Journal of dental research

authors： Lockhart SR,Joly S,Vargas K,Swails-Wenger J,Enger L,Soll DR

更新日期：1999-04-01 00:00:00

abstract：:The oral microbiome consists of a planktonic microbiome residing in saliva and an adhering microbiome (the biofilm adhering to oral hard and soft tissues). Here we hypothesized that possible differences in microbial composition of the planktonic and adhering oral microbiome on teeth can be related to the forces by whi...

journal_title：Journal of dental research

authors： Wessel SW,Chen Y,Maitra A,van den Heuvel ER,Slomp AM,Busscher HJ,van der Mei HC

更新日期：2014-01-01 00:00:00

abstract：:During the polymerization of multifunctional monomers for dental restorations, typical final double-bond conversions range from 55 to 75%. The low conversion results in a large amount of extractable monomer, reduced adhesion to the filler, and the potential for increased swelling. In this work, the ability to increase...

journal_title：Journal of dental research

authors： Anseth KS,Goodner MD,Reil MA,Kannurpatti AR,Newman SM,Bowman CN

更新日期：1996-08-01 00:00:00

abstract：:The solubilities of extracellular polysaccharide fractions produced by 14 oral streptococcal strains were compared in water, aqueous lithium and guanidine salt solutions, dimethyl sulfoxide (DMSO), and a 9:1 DMSO-water mixture. The best results for solubilizing the fractions were obtained with the DMSO-water mixture p...

journal_title：Journal of dental research

authors： Lamberts BL,Meyer TS,Simonson LG

更新日期：1975-07-01 00:00:00

abstract：:During periods of periodontal attachment loss, one of the most significant cellular changes is a decrease in the number of fibroblasts. We previously demonstrated that LPS induces apoptosis of fibroblastic cells in vivo, largely through TNF-alpha. We conducted in vivo experiments by subcutaneous inoculation of LPS in ...

journal_title：Journal of dental research

authors： Alikhani M,Alikhani Z,Graves DT

更新日期：2004-09-01 00:00:00

abstract：:Fibroblast growth factor receptor 2 (FGFR2) in craniofacial bones mediates osteoprogenitor proliferation, differentiation, and apoptosis. The distortion of proper craniofacial bone growth may cause class II and class III skeletal malocclusion and result in compromised function and aesthetics. Here, we investigated the...

journal_title：Journal of dental research

authors： Jiang Q,Mei L,Zou Y,Ding Q,Cannon RD,Chen H,Li H

更新日期：2019-11-01 00:00:00

abstract：:Early-onset periodontitis (EOP) is considered to have a genetic basis which has not been clearly defined. Genetic polymorphisms of the vitamin D receptor (VDR-B-b) and the immunoglobulin-Fc-gamma receptor IIIb (FcgammaRIIIb-NA1-NA2) are associated with bone metabolism and infectious diseases, respectively. The purpose...

journal_title：Journal of dental research

authors： Yoshihara A,Sugita N,Yamamoto K,Kobayashi T,Miyazaki H,Yoshi H

更新日期：2001-12-01 00:00:00

abstract：:The periodontium contains heterogeneous mesenchymal cell populations with various differentiation potentials. The capacity of these cells for tissue formation as well as the origin of their precursors are still not entirely defined. In this study, cells originating from different periodontal tissues were cultured in v...

journal_title：Journal of dental research

authors： Lang H,Schüler N,Arnhold S,Nolden R,Mertens T

更新日期：1995-05-01 00:00:00

abstract：:Recent evidence implicates endothelin in nociception, but it is unclear how endothelin activates trigeminal ganglion (TRG) neurons. In the present study, we investigated the expression of the endothelin receptors ETA and ETB and endothelin-induced responses in rat TRG neurons. Double-immunofluorescence studies demonst...

journal_title：Journal of dental research

authors： Yamamoto T,Ono K,Hitomi S,Harano N,Sago T,Yoshida M,Nunomaki M,Shiiba S,Watanabe S,Nakanishi O,Inenaga K

更新日期：2013-04-01 00:00:00

abstract：:Seven oral doses of demethylchlortetracycline were administered to monkeys that received serial injections of lead acetate to intravitally stain calcification sites. Bone growth was greatly inhibited, whereas dentin apposition was spared from the cumulative toxicity of demethylchlortetracycline. Cessation of bone grow...

journal_title：Journal of dental research

authors： Yen PK,Shaw JH

更新日期：1975-03-01 00:00:00

abstract：:Three dental amalgams were investigated to determine if their abrasion resistance was significantly affected by different packing pressures. Abrasive wear tests were performed on a machine designed to test materials under conditions similar to masticatory function. The results show that the abrasion resistance of the ...

journal_title：Journal of dental research

authors： Harrison A

更新日期：1977-06-01 00:00:00

abstract：:The relative contribution of the matrix of dentin to the physical properties of dentin is unknown but thought to be small. The objective of this study was to test the hypothesis that the demineralized matrix of dentin contributes little to the strength of dentin by measuring and comparing the ultimate tensile strength...

journal_title：Journal of dental research

authors： Sano H,Ciucchi B,Matthews WG,Pashley DH

更新日期：1994-06-01 00:00:00