Time-frequency analysis of chewing activity in the natural environment.

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

authors： Deyloff JL,Sanders CC

更新日期：1980-11-01 00:00:00

abstract：:In 1992 and 1997, all US and Canadian dental schools were surveyed by mail regarding the preferred initial radiographic examination prescribed for non-emergency, comprehensive-care patients (dentulous adults, edentulous adults, and children). In both survey years, a minority of US and Canadian dental schools reported ...

journal_title：Journal of dental research

authors： Kantor ML

更新日期：2000-07-01 00:00:00

abstract：:Caries of the permanent first molars of 5-year-old children was found to be associated with caries of their diciduous teeth. The sample consisted of 220 children whose permanent first molars had erupted. They were selected out of 965 children who were a representative sample of children attending compulsory kindergart...

journal_title：Journal of dental research

authors： Zadik D

更新日期：1976-11-01 00:00:00

abstract：:The etiology and pathogenesis of craniofacial birth defects are multifactorial and include both genetic and environmental factors. Despite the identification of numerous genes associated with congenital craniofacial anomalies, our understanding of their etiology remains incomplete, and many affected individuals have a...

journal_title：Journal of dental research

authors： Dash S,Bhatt S,Falcon KT,Sandell LL,Trainor PA

更新日期：2020-11-06 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：:In the rat parotid acinar cell, methacholine caused an increase in [Ca2+]i as determined by quin-2 fluorescence. The increase in [Ca2+]i was initially independent of, and subsequently dependent on, the presence of extracellular Ca2+, indicating mobilization of intracellular Ca2+, as well as activation of Ca2+ entry. M...

journal_title：Journal of dental research

authors： Aub DL,Putney JW Jr

更新日期：1987-02-01 00:00:00

abstract：:Spontaneously occurring bacteriophage-resistant mutants of Actinomyces viscosus were isolated. The mutants exhibited altered coaggregation patterns with streptococci. From analysis of the data, it appears that a cell surface structure on A. viscosus may function both as a phage receptor and as a binding site for co-ag...

journal_title：Journal of dental research

authors： Tylenda CA,Kolenbrander PE,Delisle AL

更新日期：1983-11-01 00:00:00

abstract：:MMP-20 (enamelysin), the matrix metalloproteinase family member discovered in the enamel organ, has also been detected in odontoblasts during dentin formation. We studied the presence and localization of MMP-20 in mature human teeth in health and disease. In immunohistochemistry, MMP-20-positive staining was observed ...

journal_title：Journal of dental research

authors： Sulkala M,Larmas M,Sorsa T,Salo T,Tjäderhane L

更新日期：2002-09-01 00:00:00

abstract：:The discovery of the phenomenon "osseointegration," or functional ankylosis, has led to the development of oral implants with high clinical performance. Consequently, the placement of titanium implants has changed the paradigms of restorative dentistry. Implants are used to prevent placing reconstructions anchored on ...

journal_title：Journal of dental research

authors： Lang NP

更新日期：2019-11-01 00:00:00

abstract：:Physico-chemical investigations of enamel from deciduous teeth of a small number of children with and without pre-natal fluoride supplementation (PNF) exhibited the following differences between the PNF and non-PNF enamel, with the former showing: (a) more homogeneous and less extensive patterns of acid-etching; (b) d...

journal_title：Journal of dental research

authors： LeGeros RZ,Glenn FB,Lee DD,Glenn WD

更新日期：1985-03-01 00:00:00

abstract：:Gingival overgrowth tissues have thickened connective tissue stroma, sometimes accompanied by the increased presence of collagen fibers, thickened epithelia, and elongated rete pegs. We have previously shown that expression of CCN2, also known as connective tissue growth factor (CTGF), correlates positively with the d...

journal_title：Journal of dental research

authors： Kantarci A,Nseir Z,Kim YS,Sume SS,Trackman PC

更新日期：2011-07-01 00:00:00

abstract：:Since 1935, various mechanisms have been suggested for the formation of subsurface lesions and, in particular, the surface layer covering enamel lesions. The relatively intact mineral-rich and porous surface layer is most likely caused by kinetic events. The suggested mineral-rich outer layer in sound enamel, the orga...

journal_title：Journal of dental research

authors： Arends J,Christoffersen J

更新日期：1986-01-01 00:00:00

abstract：:Four classes of elastomeric impression materials (polysulfide, polyether, silicone, and agar-agar) were evaluated on the basis of linear dimensional stability as a function of time between taking and pouring an impression of mounted teeth. Four polysulfide materials produced dies which were larger than the teeth and g...

journal_title：Journal of dental research

authors： Marcinak CF,Young FA,Draughn RA,Flemming WR

更新日期：1980-07-01 00:00:00

abstract：:This study aims at modifying dual-cure composite cements by adding thio-urethane oligomers to improve mechanical properties, especially fracture toughness, and reduce polymerization stress. Thiol-functionalized oligomers were synthesized by combining 1,3-bis(1-isocyanato-1-methylethyl)benzene with trimethylol-tris-3-m...

journal_title：Journal of dental research

authors： Bacchi A,Dobson A,Ferracane JL,Consani R,Pfeifer CS

更新日期：2014-12-01 00:00:00

abstract：:Attempts to produce resin composite with antibacterial properties by incorporation of an antibacterial agent such as chlorhexidine have been reported, but problems can arise due to release of the inhibitory agent from the composite. Such problems may include toxic effects, influence on mechanical properties, and loss ...

journal_title：Journal of dental research

authors： Imazato S,Torii M,Tsuchitani Y,McCabe JF,Russell RR

更新日期：1994-08-01 00:00:00

abstract：:Previous studies have shown that extracts of various filling materials, e.g., resin composites, may influence the growth of cariogenic micro-organisms. The purpose of this study was to examine the effects of important resin composite (co)monomers (Bis-GMA, UDMA, TEGDMA, EGDMA) and extracts of two commercial dental com...

journal_title：Journal of dental research

authors： Hansel C,Leyhausen G,Mai UE,Geurtsen W

更新日期：1998-01-01 00:00:00

abstract：:Our long-term objective is to devise methods to improve osteotomy site preparation and, in doing so, facilitate implant osseointegration. As a first step in this process, we developed a standardized oral osteotomy model in ovariectomized rats. There were 2 unique features to this model: first, the rats exhibited an os...

journal_title：Journal of dental research

authors： Chen CH,Pei X,Tulu US,Aghvami M,Chen CT,Gaudillière D,Arioka M,Maghazeh Moghim M,Bahat O,Kolinski M,Crosby TR,Felderhoff A,Brunski JB,Helms JA

更新日期：2018-04-01 00:00:00

abstract：:Sjögren's syndrome is a common autoimmune rheumatic disease. The most common symptoms of Sjögren's syndrome are extreme tiredness, along with dry eyes (keratoconjunctivitis sicca) and dry mouth (xerostomia). Saliva plays an essential role in numerous functions of the mouth. Xerostomia can be caused by medications, chr...

journal_title：Journal of dental research

authors： Mathews SA,Kurien BT,Scofield RH

更新日期：2008-04-01 00:00:00

abstract：:The pathophysiology of painful temporomandibular disorders is not fully understood, but evidence suggests that muscle pain modulates motor function in characteristic ways. This study tested the hypothesis that activation of nociceptive muscle afferent fibers would be linked to an increased excitability of the human ja...

journal_title：Journal of dental research

authors： Wang K,Arendt-Nielsen L,Svensson P

更新日期：2002-09-01 00:00:00

abstract：:A three-month study of the chemistry of the water erosion of two forms of ASPA cement has been made. The effect of varying cement consistency and cure time was investigated. The results are discussed in terms of the known chemistry and structure of the cement. The erosion behavior is compared to that of silicate, sili...

journal_title：Journal of dental research

authors： Crisp S,Lewis BG,Wilson AD

更新日期：1976-11-01 00:00:00

abstract：:Monolayers of feline parotid acinar cells were infected with feline rhinotracheitis herpes virus. Membrane potentials and input resistances were measured before and during infection. Uninfected acinar cells had an average membrane potential of -51 mV and resistances from 6 to 120 mega-ohms; cells infected for more tha...

journal_title：Journal of dental research

authors： Weigel RJ,Fritz ME,Nahmias AJ

更新日期：1981-12-01 00:00:00

abstract：:Genetic approaches are rapidly yielding new information about our sense of taste. This information comes from both molecular studies of genes encoding taste receptors and other taste-signaling components, and from studies of inherited variation in taste abilities. Our understanding of bitter taste has advanced by comb...

journal_title：Journal of dental research

authors： Kim UK,Breslin PA,Reed D,Drayna D

更新日期：2004-06-01 00:00:00

abstract：:Dimensional alterations of the facial bone wall following tooth extractions in the esthetic zone have a profound effect on treatment outcomes. This prospective study in 39 patients is the first to investigate three-dimensional (3D) alterations of facial bone in the esthetic zone during the initial 8 wks following flap...

journal_title：Journal of dental research

authors： Chappuis V,Engel O,Reyes M,Shahim K,Nolte LP,Buser D

更新日期：2013-12-01 00:00:00

abstract：:Previous studies showed that residual compressive stresses induced by thermal tempering retarded the growth of surface cracks in bilayered porcelain disks. The objectives of the present study were: (1) to determine whether thermal tempering by air blasting reduces the length of cracks induced by microhardness indentat...

journal_title：Journal of dental research

authors： DeHoff PH,Anusavice KJ,Vontivillu SB

更新日期：1996-02-01 00:00:00

abstract：:It has often been hypothesized that a large tongue leads to an enlargement of the mandible and therefore contributes to the development of mandibular prognathism. We examined (1) whether the tongue volume in human subjects with mandibular prognathism was larger than that in subjects with good occlusion and (2) whether...

journal_title：Journal of dental research

authors： Yoo E,Murakami S,Takada K,Fuchihata H,Sakuda M

更新日期：1996-12-01 00:00:00

abstract：:An indirect extrusion capillary viscometer has been developed. This has been tested for nonsetting Newtonian fluids and was found to give results close to, but slightly lower than the actual viscosity. The same apparatus has been successfully applied to a non-Newtonian fluid to determine the dependence of viscosity on...

journal_title：Journal of dental research

authors： Combe EC,Moser JB

更新日期：1976-03-01 00:00:00

abstract：:The amount of free water in 50 samples of air-dried enamel from permanent and deciduous teeth was measured by the Karl Fischer method. Samples included both contemporary and burial specimens. The mean values obtained showed that free water constituted about 1% of enamel mass. However, the range of individual values va...

journal_title：Journal of dental research

authors： Bonte E,Deschamps N,Goldberg M,Vernois V

更新日期：1988-05-01 00:00:00

abstract：:Alendronate (ALN) is an antiresorptive agent widely used for the treatment of osteoporosis. Its suppressive effect on osteoclasts has been extensively studied. However, the effect of ALN on bone formation is not as clear as its effect on resorption. The objective was to determine the effect of short-term ALN on bone f...

journal_title：Journal of dental research

authors： Tanoue R,Koi K,Yamashita J

更新日期：2015-09-01 00:00:00

abstract：:In two separate experiments, none of the 14 subunits examined consistently ranked dentifrices similarly to the ranking obtained when the individual rat was used as the experimental unit. Arbitrarily dividing the rat into subunits and then comparing results among these subunits may lead to false conclusions since the r...

journal_title：Journal of dental research

authors： Briner WW

更新日期：1976-05-01 00:00:00

abstract：:The incisor dentin of hypophosphatemic (Hyp) mice was examined histopathologically to determine whether the multiple occurrences of interglobular dentin would be influenced by the serum phosphate level. Both normal and Hyp mice (12 weeks of age) were divided into two groups. The mice in one group were given a control ...

journal_title：Journal of dental research

authors： Abe K,Masatomi Y,Nakajima Y,Shintani S,Moriwaki Y,Sobue S,Ooshima T

更新日期：1992-03-01 00:00:00