Impact of hydrodynamics on oral biofilm strength.

abstract：:The biocompatibility of two implant materials, vitallium and poly-methyl methacrylate (PMMA), was evaluated in an animal model in which bone formation and resorption are independent of each other. Neither material accelerated resorption, but formation was inhibited 12% by vitallium and 38% by PMMA. When three PMMA pre...

journal_title：Journal of dental research

authors： Garcia DA,Sullivan TM,O'Neill DM

更新日期：1981-01-01 00:00:00

abstract：:A full understanding of the key regulators controlling periodontal development and homeostasis is necessary for the design of improved periodontal regenerative therapies. Small leucine-rich proteoglycans (SLRPs) are extracellular matrix molecules suggested to regulate collagen organization and cell signaling. Mice wit...

journal_title：Journal of dental research

authors： Wang L,Foster BL,Kram V,Nociti FH Jr,Zerfas PM,Tran AB,Young MF,Somerman MJ

更新日期：2014-08-01 00:00:00

abstract：:Although pulp fibroblasts are a major cell type in dental pulp, their roles in microbial recognition and pulpal inflammation are not well-understood. Considering the pivotal role of Toll-like receptors (TLRs) in the recognition of micro-organisms, we hypothesized that TLRs on pulp fibroblasts may induce inflammatory s...

journal_title：Journal of dental research

authors： Park C,Lee SY,Kim HJ,Park K,Kim JS,Lee SJ

更新日期：2010-02-01 00:00:00

abstract：:Significant differences exist between human and Macaca fascicularis patterns of mandibular movement during mastication. Macaque patterns display less asymmetry, more uniformity, and limited lateral excursions when compared to humans for mastication of the same food. Different anatomical structures between the two spec...

journal_title：Journal of dental research

authors： Byrd KE,Milberg DJ,Luschei ES

更新日期：1978-07-01 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

authors： Johansson I,Witkowska E,Kaveh B,Lif Holgerson P,Tanner AC

更新日期：2016-01-01 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

authors： Kambara M,Asai T,Kumasaki M,Konishi K

更新日期：1978-02-01 00:00:00

abstract：:This study investigated irregularities in hinge movement in 113 subjects. These irregularities were analyzed by computer with an instantaneous three-dimensional "screw axis method." The variation in hinge movement was measured by the dispersion of the hinge axis instant centers. Dispersion of instant centers was great...

journal_title：Journal of dental research

authors： Lupkiewicz SM,Gibbs CH,Mahan PE,Lundeen HC,Ariet M,Sinkewiz SL

更新日期：1982-01-01 00:00:00

abstract：:The Kubelka-Munk (K-M) theory provides a reflectance model for translucent materials placed on backings of different colors. We hypothesize that Kubelka-Munk (K-M) theoretical diffuse reflectance spectra of dentin and enamel are in good agreement with observed diffuse reflectance. The aim of this study was to measure ...

journal_title：Journal of dental research

authors： Ragain JC Jr,Johnston WM

更新日期：2001-02-01 00:00:00

abstract：:It is generally accepted that glass ionomers inhibit secondary caries in vivo, and data from in vitro studies support this effect. The aim of this review was a systematic assessment, from the literature, of clinical evidence for the ability of glass-ionomer restoratives to inhibit secondary caries at the restoration m...

journal_title：Journal of dental research

authors： Randall RC,Wilson NH

更新日期：1999-02-01 00:00:00

abstract：:Chemotherapeutics are presently considered for use in caries-preventive programs. The laboratory and in vivo testing of these agents, to some extent, parallels the methodology developed for the evaluation of fluoride products. However, fluoride is primarily effective by interfering with the de- and remineralization ba...

journal_title：Journal of dental research

authors： ten Cate JM,Marsh PD

更新日期：1994-03-01 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

authors： Gao XJ,Elliott JC,Anderson P

更新日期：1993-05-01 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：: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

authors： West GA,Reid KH,Bastawi AE

更新日期：1983-06-01 00:00:00

abstract：:During porcelainization the non-preoxidized alloy develops a Be-rich reaction zone in the interface which separates a Be-depleted alloy from a Li and (to a lesser extent Na) depleted region of the ceramic. Thus, Be diffuses to the interface through the alloy Be degrees leads to Be++ + 2 e- occurs at the interface; som...

journal_title：Journal of dental research

authors： Williams TR,Johnson CE,Winchell PG,Philips RW

更新日期：1978-02-01 00:00:00

abstract：:The kinetics of growth of calcium phosphates on synthetic hydroxyapatite (HAP), human enamel, whole dentin, and human calculus has been studied at 37 C at pH values from 4.97 to 5.10 held constant by the pH-stat addition of base. Following an initial induction period, dicalcium phosphate dihydrate (DCPD) crystallizati...

journal_title：Journal of dental research

authors： Barone JP,Nancollas GH

更新日期：1978-01-01 00:00:00

abstract：:Fluid transudation through simplified dentin adhesives can occur in bonded vital crown dentin, since these adhesives behave as permeable membranes after polymerization. The effect of adhesive permeability in endodontically treated teeth is unknown. This study examined the hypothesis that in vivo fluid movement through...

journal_title：Journal of dental research

authors： Chersoni S,Acquaviva GL,Prati C,Ferrari M,Grandini S,Pashley DH,Tay FR

更新日期：2005-03-01 00:00:00

abstract：:Investigators have used chemotherapeutic agents topically for plaque control without knowing the drug concentration necessary to inhibit the growth of odontopathic microorganisms. S mutans, S sanguis, A viscosus and A naeslundii are important components of the plaque flora. The minimal inhibitory concentrations (MIC) ...

journal_title：Journal of dental research

authors： Newbrun E,Felton RA,Bulkacz J

更新日期：1976-07-01 00:00:00

abstract：:An in vitro model has been developed for measurement of initial attachment of 3H-labeled human gingival fibroblasts (HGF) and periodontal ligament cells (HPDL cells) to sieved dentin powder. Reproducible attachment was obtained and was closely related to the number of plated cells, the amount of dentin powder, the tem...

journal_title：Journal of dental research

authors： Rompen EH,Kohl J,Nusgens B,Lapiere CM

更新日期：1993-03-01 00:00:00

abstract：:Rotational freedom of the implant-abutment connection influences its screw joint stability; for optimization, influential factors need to be evaluated based on a previously developed closed formula. The underlying hypothesis is that the manufacturing tolerances, geometric pattern, and dimensions of the index do not in...

journal_title：Journal of dental research

authors： Semper W,Kraft S,Krüger T,Nelson K

更新日期：2009-08-01 00:00:00

abstract：:Restriction endonuclease analysis (REA) was performed on the total cellular DNA from each of 396 strains of mutans streptococci (1) to determine its potential usefulness for the study of transmission of the organism and (2) to document the proportions and variety of strains harbored by members of a small group of fami...

journal_title：Journal of dental research

authors： Kulkarni GV,Chan KH,Sandham HJ

更新日期：1989-07-01 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：: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

authors： Liu Y,Tjäderhane L,Breschi L,Mazzoni A,Li N,Mao J,Pashley DH,Tay FR

更新日期：2011-08-01 00:00:00

abstract：:Samples of human dental plaque were pooled from several "white spot" smooth tooth surface areas as well as from several clinically-sound tooth surface areas in each of 12 caries-positive college students. Each of the two samples from each subject was used for the determination of: (1) pH-lowering potential in vitro in...

journal_title：Journal of dental research

authors： Van Houte J,Sansone C,Joshipura K,Kent R

更新日期：1991-12-01 00:00:00

abstract：:Intracystic fluid pressure is thought to be involved in odontogenic cyst growth. In this study, we investigated the effects of positive pressure on the expression of interleukin-1alpha (IL-1alpha), matrix metalloproteinases (MMPs), and prostaglandin E2 (PGE2) in odontogenic keratocysts to determine whether this pressu...

journal_title：Journal of dental research

authors： Oka S,Kubota Y,Yamashiro T,Ogata S,Ninomiya T,Ito S,Shirasuna K

更新日期：2005-10-01 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

authors： Rupp NW

更新日期：1979-05-01 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：:Amylase activity in various tissues--i.e., submandibular/sublingual and parotid glands, the pancreas, saliva, and serum--in rats was measured after injection of isoproterenol, pilocarpine, and acetylcholine. All agents reduced amylase activity in the parotid gland and increased the enzyme activity in the submandibular...

journal_title：Journal of dental research

authors： Ikeno T,Nasu J,Kuzuya H

更新日期：1983-01-01 00:00:00

abstract：:The human temporalis and masseter muscles are not activated homogeneously during static bite force tasks. In this study, we studied the possible existence of regional differences in these muscles under dynamic conditions. Electromyographic (EMG) activity was recorded by means of bipolar fine-wire electrodes. Six elect...

journal_title：Journal of dental research

authors： Blanksma NG,van Eijden TM

更新日期：1995-06-01 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：:The role of Streptococcus mutans in the initiation of dental caries has been recognized and attributed, at least in part, to its ability to colonize the tooth surface. Therefore, factors which prevent S. mutans attachment to hydroxyapatite (HA) are of considerable interest for the prophylaxis of this infectious diseas...

journal_title：Journal of dental research

authors： Tarsi R,Muzzarelli RA,Guzmán CA,Pruzzo C

更新日期：1997-02-01 00:00:00