Abstract:
:Tritiated proline was administered to domestic cats during the development of their permanent dentition. The amount of residual radioactivity was determined autoradiographically at various times after cavity preparation in mature molars and premolars. Two wk after cavity preparation, the amount of radiolabel beneath the axial cavity wall decreased to about 50% of that present in corresponding contralateral cavity-free teeth. The observed decreases are ascribed to an enhancement of the protein metabolism in dentin. At 45 wk, 80-90% of the radiolabel has disappeared. This paper discusses the role of an eventual effect of microleakage on the latter results.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Hoppenbrouwers PM,Borggreven JM,Thé GS,Maltha JCdoi
10.1177/00220345820610090101subject
Has Abstractpub_date
1982-09-01 00:00:00pages
1035-8issue
9eissn
0022-0345issn
1544-0591journal_volume
61pub_type
杂志文章abstract::Teeth develop through distinct morphological stages. At the cap stage, a compactly clustered and concentrically arranged cell mass, the enamel knot, appears at the tip of the enamel organ. Cells in this knot express sets of key molecules, and as such have been proposed to act as a signaling center directing tooth morp...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/0022034514525784
更新日期:2014-05-01 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
abstract::The aim of this study was to assess the effect of chewing gum containing phosphoryl oligosaccharides of calcium (POs-Ca) and a low concentration of fluoride (F) on the hardness of enamel subsurface lesions, utilizing a double-blind, randomized, and controlled in situ model. Fifteen individuals wore removable lingual a...
journal_title:Journal of dental research
pub_type: 杂志文章,随机对照试验
doi:10.1177/0022034512439716
更新日期:2012-04-01 00:00:00
abstract::Enamel abraders used in two-body wear tests suffer the disadvantage that standardization is difficult or impossible to obtain. The aim of this study was to test whether steatite (a ceramic material with a Vickers Hardness similar to that of enamel) could be used as a satisfactory human enamel analogue. The friction an...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345940730091001
更新日期:1994-09-01 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::The fluid in and gingival tissue lining periodontal pockets were collected from male patients undergoing periodontal therapy. The collagenolytic activity of the crevicular fluid, and the ability of the gingiva in culture to degrade (a) an exogenous collagen substrate, and (b) endogenous collagen newly synthesized and ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345790580111601
更新日期:1979-11-01 00:00:00
abstract::The objective of this study was to determine the in vitro corrosion products that resulted from crevice corrosion of low- and high-copper dental amalgams. Specimens were potentiostatically polarized in a chloride-containing electrolyte while set against a PTFE surface to form a crevice. After 16 h, corrosion products ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345910700071301
更新日期:1991-07-01 00:00:00
abstract::We determined the exposure to mercury from dental amalgam by comparison of blood levels of mercury before and after removal of all amalgams from ten subjects. Baseline concentrations of mercury in whole blood were measured weekly for four to 18 weeks (median = 6.6 weeks) prior to removal. All amalgams were removed in ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345890680050501
更新日期:1989-05-01 00:00:00
abstract::Impacted human third molar teeth were examined, both with the light and electron microscope, to determine the extent of the odontoblast process. The odontoblast process was found to be limited to the inner third of coronal dentin and inner half of mid-root dentin. ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/002203457905800412011
更新日期:1979-11-01 00:00:00
abstract::Enamel demineralization adjacent to pit and fissure sealants leads to the formation of marginal caries, which can necessitate the replacement of existing sealants. Dental materials with bioactive glass, which releases ions that inhibit dental caries, have been studied. The purpose of this study was to evaluate the ena...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/0022034515626116
更新日期:2016-05-01 00:00:00
abstract::The expired air of a group of 48 persons, 40 with and eight without dental amalgam restorations, was analyzed for its mercury content before and after chewing. Expired air samples were collected in polyethylene bags, and a known quantity of each was pumped into the mercury detector for measurement. The results showed ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345810600090601
更新日期:1981-09-01 00:00:00
abstract::Recent reports have suggested functional interactions between the masticatory and head motor systems. However, the neurophysiological mechanisms behind these phenomena have not been thoroughly investigated. In this study, the motor unit activity was recorded bilaterally from the dorsal neck splenius muscles (SPL) whil...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/154405910308200515
更新日期:2003-05-01 00:00:00
abstract::Investigations of the maturation pattern of rat incisor enamel by quantitative electron microscopy and electron-probe microanalysis indicate that mineralization of rat enamel can be regarded, as in humans, as a regular and progressive process pattern of enamel matrix formation. The species variations that have been pr...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345790580024201
更新日期:1979-03-01 00:00:00
abstract::In the past two decades, accumulated evidence has clearly demonstrated the inhibitory effects of laser irradiation on enamel demineralization, but the exact mechanisms of these effects remain unclear. The purpose of this study was to investigate the effects of low-energy CO2 laser irradiation on demineralization of bo...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345000790091401
更新日期:2000-09-01 00:00:00
abstract::In mineralizing hamster molars, the influence of several inhibitors on p-NPP-ase has been demonstrated, and compared with their effect on PPi-ase, known to belong to the same enzyme. Whereas the latter activity is much more physiological, p-NPP is a better substrate to distinguish between the effects of bivalent catio...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345770560102701
更新日期:1977-10-01 00:00:00
abstract::An adhesive opaque resin for veneering on cast metal was developed with 4-methacryloxyethyl trimellitate anhydride and poly (methyl methacrylate)-coated titanium dioxide prepared by aqueous phase polymerization. The opaque resin was a modified 4-META/MMA-TBB resin. The powder consisted of 20% of the encapsulated mater...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345880670010501
更新日期:1988-01-01 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::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::Genetic influences are important in the determination of mandibular morphology, and growth hormone receptor (GHR) is believed to have an important influence on the growth of craniofacial bone. In this study, we used quantitative trait locus methods to evaluate the relationship between craniofacial morphology and singl...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/154405910508401116
更新日期:2005-11-01 00:00:00
abstract::Class II major histocompatilibity complex (MHC)-expressing cells are usually distributed in dental pulp, and it was postulated that the colony-stimulating factor (CSF) derived from dental pulp fibroblasts contributes to the migration of class II MHC-expressing cells into pulp tissue. This study aimed to investigate th...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/154405910308200204
更新日期:2003-02-01 00:00:00
abstract::Resin-bonded bridges may replace missing teeth and act as splints in periodontal treatment. The objective of this study was to investigate the etch pattern after electrolytic etching of selected Co-Cr alloys in hydrochloric acid and to assess the changes in alloy composition after different etching times. The alloys i...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345870660091301
更新日期:1987-09-01 00:00:00
abstract::A quantitative microprobe analysis was conducted on three commercial amalgams to determine the nature of the phases present. The presence of tin in the Ag-Hg phase (gamma1) was confirmed and Cu-3Sn was found in the original alloy particles. In the dispersant amalgam studied, little Sn-Hg phase (gamma-2) was found and ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:
更新日期:1975-03-01 00:00:00
abstract::The complexity of the periodontal microbiota resembles that of the gastro-intestinal tract, where infectious diseases are treatable via probiotics. In the oropharyngeal region, probiotic or replacement therapies have shown some benefit in the prevention of dental caries, otitis media, and pharyngitis, but their effect...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/154405910708601111
更新日期:2007-11-01 00:00:00
abstract::Indigenous populations around the world experience a disproportionate burden in terms of oral diseases and conditions. These inequalities are likely due to a complex web of social determinants that includes poverty, historical consequences of colonialism, social exclusion, government policies of assimilation, cultural...
journal_title:Journal of dental research
pub_type: 杂志文章,评审
doi:10.1177/0022034518763605
更新日期:2018-07-01 00:00:00
abstract::A new type of hydraulic cement has been developed. This cement consists of a mixture of cement powder and setting agent powder and therefore has only to be kneaded with a little amount of water when being used. ...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345790580050601
更新日期:1979-05-01 00:00:00
abstract::Interleukin (IL)-23 is an essential cytokine involved in expansion of the Th17 lineage, which is associated with many immune-related destructive tissue diseases. We hypothesized that the IL-23-induced Th17 pathway plays a role in periodontal pathology and examined the expression of cytokines, and related molecules, in...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/0022034509339889
更新日期:2009-07-01 00:00:00
abstract::Periodontitis is a complex, multifactorial chronic disease involving continuous interactions among bacteria, host immune/inflammatory responses, and modifying genetic and environmental factors. More than any other cytokine family, the interleukin (IL)-1 family includes key signaling molecules that trigger and perpetua...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/0022034520945209
更新日期:2020-12-01 00:00:00
abstract::Interfacial bonding and stability of gamma-methacryloxypropyltrimethoxysilane with silica surfaces have been studied by means of infrared spectroscopy. The addition of n-propylamine enhances silanization of gamma-methacryloxypropyltrimethoxysilane to silica surfaces in normal aliphatic hydrocarbons, and cyclohexane yi...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/00220345820610121301
更新日期:1982-12-01 00:00:00
abstract::Once established, early-colonizing bacterial species tend to persist in the mouth. To obtain detailed information on the population dynamics of early-colonizing oral anaerobes, we examined the clonal diversity and persistence of clones among oral Fusobacterium nucleatum populations during the first 2 yrs of life. Cons...
journal_title:Journal of dental research
pub_type: 杂志文章
doi:10.1177/154405910408300613
更新日期:2004-06-01 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