Abstract：
:Pulpal blood flow was determined in 32 dogs ranging in age from 6 weeks to 18 months by the isotope fractionation method incorporating diffusible and nondiffusible tracers. Dogs were placed into selected age groups by the developmental status of the canine teeth. For the teeth sampled, the maxillary first, second, and third incisors along with the canines and first molars, pulpal blood flow was determined to be not different in teeth at various developmental stages. For some dental pulps, alveolar mucosa, and bone, the tracers were not determining equivalent blood flows. Because of incomplete trapping of the 7- to 10 mu microspheres and the flow limitation of 86Rb, the 15 mu spheres would appear to be a reliable indicator of "total" blood flow to pulpal tissues. However, in alveolar mucosa and bone, and 15 mu microspheres may not be completely trapped and thus, may underestimate blood flow to these tissues. Within the age range of these dogs, tissue blood flow was not dependent upon the stages of oral development.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Path MG,Meyer MWdoi
10.1177/00220345770560102601subject
Has Abstractpub_date
1977-10-01 00:00:00pages
1245-54issue
10eissn
0022-0345issn
1544-0591journal_volume
56pub_type
杂志文章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
pub_type： 杂志文章
doi：10.1177/00220345960750120701
更新日期：1996-12-01 00:00:00
abstract：:We have isolated a specific cell wall antigen of high molecular weight which appears to be unique to virulent strains of A viscosus and A naeslundii. The antigen is composed of two parts: a polysaccharide moiety containing 6-DOT as the major sugar and determinant of serologic specificity, and a small peptide bearing s...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/002203457605500111011
更新日期：1976-01-01 00:00:00
abstract：:The objective of this study was to assess the relative effects of age and oral hygiene on the progression of periodontitis by estimating incidence from age-specific prevalence. This study analyzed data from a representative national sample of 14,690 dentate Americans, aged from 15 to 74, seen in the first National Hea...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345870660010201
更新日期：1987-01-01 00:00:00
abstract：:IL-18 is a pro-inflammatory cytokine that is important in the regulation of T-cells and is elevated in inflammatory disorders such as periodontal disease. Vasoactive intestinal peptide (VIP) modulates immune responses to the periodontal pathogen Porphyromonas gingivalis (Pg). Our objective was to investigate the effec...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910708600915
更新日期：2007-09-01 00:00:00
abstract：:Understanding the mechanical properties of human teeth is important to clinical tooth preparation and to the development of "tooth-like" restorative materials. Previous studies have focused on the macroscopic fracture behavior of enamel and dentin. In the present study, we performed indentation studies to understand t...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345980770030601
更新日期：1998-03-01 00:00:00
abstract：:Dental amalgam restorations are a significant source of mercury exposure in the human population, but their potential to cause systemic health effects is highly disputed. We examined effects on the immune system by giving genetically mercury-susceptible Brown Norway (BN) rats and mercury-resistant Lewis (LE) rats silv...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345980770060601
更新日期：1998-06-01 00:00:00
abstract：:One-step incomplete excavation seals caries-affected dentin under a restoration and appears to be advantageous in the treatment of deep lesions. However, it is impossible to discriminate radiographically between intentionally left, arrested lesions and overlooked or active lesions. This diagnostic uncertainty decrease...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034514531291
更新日期：2014-06-01 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：: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
pub_type： 杂志文章
doi：10.1177/0022034515613043
更新日期：2016-02-01 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
pub_type： 杂志文章
doi：10.1177/00220345780570022701
更新日期：1978-02-01 00:00:00
abstract：:A new hydroxyapatite ceramic implant material for restoration of atrophic edentulous ridges was tested in a canine animal model. The structure of this material is unique, in that it is produced from the skeleton of a coral, and in that it is penetrated by a uniform network of interconnected pores. Results indicate tha...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345830620021301
更新日期：1983-02-01 00:00:00
abstract：:The purpose of this study was to determine the surface roughness of enamel-to-enamel contact areas in order to provide a standard for comparison with surface characteristics of commercially available composite restorative materials. In addition, the inherent surface roughness of resin composites was evaluated profilom...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345910700091301
更新日期：1991-09-01 00:00:00
abstract：:Hydrogen sulfide (H2S) and methyl mercaptan (CH3SH) are the volatile sulfur compounds (VSC) that were investigated for a possible role in the etiology of periodontal disease. The results show that the permeability of porcine non-keratinized sublingual mucosa is increased by up to 75% or 103% following exposure to H2S ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345840630071701
更新日期：1984-07-01 00:00:00
abstract：:Experimental marginal leakage of high- and low-Cu amalgam restorations placed in acrylic teeth, where the cavities were untreated or painted with denatured collagen and/or a CaP slurry, was assessed after specimens were stored in a 1% NaCl solution for ten days and for one yr. All specimens stored for ten days showed ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345840630081801
更新日期：1984-08-01 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
pub_type： 临床试验,杂志文章
doi：10.1177/00220345950740091301
更新日期：1995-09-01 00:00:00
abstract：:Synovial hyperplasia is a feature of degenerative temporomandibular joint (TMJ) disease. However, the mechanism by which hyperplasia progresses in the TMJ is unknown. Based on the hypothesis that the oxidative stress generated by mechanical loading causes degenerative changes in the TMJ synovium, we investigated the g...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910408300807
更新日期：2004-08-01 00:00:00
abstract：:A procedure for measuring nasal airway resistance using posterior rhinorheometry is described. Baseline nasal airway resistances +/- 1 S.D. at an airflow of 0.5 L/sec were found to be 1.077 +/- 0.683 cm H2O for inhalation and 1.359 +/- 0.792 cm H2O for exhalation. Application of either cold water (4 to 6 C) or warm wa...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345770560110301
更新日期：1977-11-01 00:00:00
abstract：:Cardiovascular disease is a common cause of morbidity and premature mortality. Cardiovascular disease can be prevented when risk factors are identified early. Calcified carotid artery atheromas (CCAAs), detected in panoramic radiographs, and periodontitis have both been associated with increased risk of cardiovascular...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034519885362
更新日期：2020-01-01 00:00:00
abstract：:The junctional epithelium (JE) is unique with regard to its wide intercellular spaces and sparsely developed intercellular junctions. Thus, knowledge of the molecular mechanisms that regulate the formation of the intercellular junctions of the junctional epithelium may be essential to understand the pathophysiology of...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034515619375
更新日期：2016-03-01 00:00:00
abstract：:Cultures of Streptococcus mutans MFe28 (serotype h) were grown with differing extracellular polysaccharide (EPS) content. Biochemical and physicochemical characteristics considered relevant to caries were measured. Acid production parameters measured in a pH-stat were: Vm = 0.76 +/- 0.14 mumol/g/sec (wet weight); appa...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345880670060101
更新日期：1988-06-01 00:00:00
abstract：:Using a pin-on-disc sliding-wear test apparatus, the wear behavior of a typical composite restorative vs. styli fashioned from human enamel, sintered alumina, and magnesium fluoride was examined. The rates of restorative wear were found to be identical, within the experimental error of the measurements, for tests usin...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345840630062501
更新日期：1984-06-01 00:00:00
abstract：:Limited cure depth is a drawback of light-activated composites. We hypothesize that curing light transmission and cure depth are influenced by monomer reactivity and filler/resin refractive index mismatch. Light transmission throughout cure was recorded for composites based on strontium (refractive index 1.51) or bari...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910808700115
更新日期：2008-01-01 00:00:00
abstract：:In this study, environmental stains were removed from maxillofacial elastomers by solvent extraction. Silastic 44210, an RTV silicone with proven color and physical property stability, was stained with lipstick, disclosing solution, and methylene blue. These stains were then removed by solvent extraction with each of ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345810600100501
更新日期：1981-10-01 00:00:00
abstract：:Components of resin materials may damage DNA, leading to genetic alterations in mammalian cells. Here, monomers were analyzed for the induction of chromosomal aberrations indicated by micronuclei induced in V79 cells. A dose-related increase in the numbers of micronuclei was observed with triethyleneglycol dimethacryl...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345010800070401
更新日期：2001-07-01 00:00:00
abstract：UNLABELLED:We have previously shown that the resin monomer 2-hydroxyethylmethacrylate (HEMA) affects mouse B-lymphocyte activity, leading to increased IgG1 antibody production in vivo. In the present study, we tested, in vitro, the hypothesis that HEMA also affects human B-lymphocyte activity. The in vitro production o...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034510378522
更新日期：2010-12-01 00:00:00
abstract：:Continuous etching of aggressive all-in-one adhesives occurs in wet dentin tubules after polymerization of the adhesives. This study challenged the hypothesis that unpolymerized acidic monomers from an aggressive all-in-one self-etching adhesive continue to etch beyond dentin hybrid layers. Dentin surfaces bonded with...
journal_title：Journal of dental research
pub_type： 杂志文章,随机对照试验
doi：10.1177/0022034510363665
更新日期：2010-05-01 00:00:00
abstract：:The purpose of this study was to determine the role of saliva-derived biomarkers and periodontal pathogens during periodontal disease progression (PDP). One hundred human participants were recruited into a 12-month investigation. They were seen bi-monthly for saliva and clinical measures and bi-annually for subtractio...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章
doi：10.1177/0022034511399908
更新日期：2011-06-01 00:00:00
abstract：:The proton probe has been used to map F concentration changes in the enamel of 15 teeth showing clinical evidence of caries. Thin sections through the lesions were microradiographed and measurements made of the surface zone (radiodense) and body (radiolucent) areas. Each section was then scanned with a focused beam of...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345950740111001
更新日期：1995-11-01 00:00:00
abstract：:Previous studies have shown that fluoride affected the formation of apatite in spontaneous precipitations from unstable calcium phosphate solutions partly through its effect on the stability of such nonapatitic precursors as octacalcium phosphate, Ca8H2(PO4)6.5 H2O. The present study shows that fluoride had a comparab...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590021401
更新日期：1980-02-01 00:00:00
abstract：:Primary cilia regulate several developmental processes and mediate hedgehog signaling. To study their roles in cranial base development, we created conditional mouse mutants deficient in Polaris, a critical primary cilium component, in cartilage. Mutant post-natal cranial bases were deformed, and their synchondrosis g...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034509337775
更新日期：2009-06-01 00:00:00
