Abstract：
:Urinary catecholamines have been used to measure emotionally stressful states which may affect the development of dental caries. This study investigates the hypothesis that children with and without dental caries do not differ significantly in the mean values of urinary catecholamines such as epinephrine, norepinephrine, and dopamine. As a test of this hypothesis, 314 children, males and females, aged from 6 to 8 years, were included in the study. Dental caries were recorded clinically and radiographically, and oral hygiene was evaluated by the recording of dental plaque. A 24-hour urine sample was collected for each subject, and a representative sample (25 mL) was analyzed by the HPLC technique to assay the catecholamine content. Socioeconomic factors such as parental age, education, and profession were recorded by a questionnaire distributed to the parents. Of the examined children, 38 (14 males and 24 females) were free of dental caries and constituted the case group. Two control groups, A and B, of 38 children each (14 males and 24 females) with dental caries were matched by age and gender. Differences in the quantitative and qualitative data were tested by the paired t test and the X2-test, respectively, while a regression analysis was applied to measure the effects of norepinephrine and dopamine on epinephrine. The logistic multiple-regression analysis was used to test, in the entire population, the impact of catecholamines and other related factors on the probability of subjects' developing dental caries. The 95% probability was used. The results showed statistically significant differences in epinephrine values between the case group and control groups A and B. The data suggest, therefore, that children with emotionally stressful states have higher probability of developing dental caries.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Vanderas AP,Manetas C,Papagiannoulis Ldoi
10.1177/00220345950740100801subject
Has Abstractpub_date
1995-10-01 00:00:00pages
1671-8issue
10eissn
0022-0345issn
1544-0591journal_volume
74pub_type
杂志文章abstract：:This study indicated that a clear relationship exists between silicon and fluoride. We have also demonstrated a probable surface enamel silicon effect that increases fluoride uptake. The complex set of relationships described in the surface chemistry of calcium, tin, and zirconium with fluoride, hydroxide, phosphate, ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345760550050601
更新日期：1976-09-01 00:00:00
abstract：:In a three-year study of 145 adolescent males in a boarding school in Wisconsin, there were no statistically significant differences in dental caries experience between a group consuming phosphates added to pre-sweetened and non-presweetened ready-to-eat cereals, and the control group, or between cereal eaters and non...
journal_title：Journal of dental research
pub_type： 临床试验,杂志文章
doi：10.1177/00220345790580090201
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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
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journal_title：Journal of dental research
pub_type： 杂志文章,评审
doi：10.1177/0022034513490957
更新日期：2013-07-01 00:00:00
abstract：:We placed an MOD preparation in each of 12 permanent molars, then restored each tooth with a posterior composite resin by means of six different application techniques (I-polymerization as one complete unit; II--polymerization as one complete unit with glass inserts; III--polymerization in gingivo-occlusal increments;...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345890680080401
更新日期：1989-08-01 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：:Successive active phases observed in periodontal diseases may be explained either by a sudden activation of the pro-forms of tissue-stored degradative enzymes such as metalloproteinases (MMPs) or by an imbalance between metalloproteinases and their tissue inhibitors (TIMPs). To discriminate between these two hypothese...
journal_title：Journal of dental research
pub_type： 杂志文章
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abstract：:Repulsive magnetic appliances can intrude posterior teeth, but create a lateral shift of the mandible and also decrease in force as the mouth opens. To model their optimal use, the 3-D spatial force/displacement (F/D) and moment/displacement (M/D) diagrams of four magnetic repulsive appliances in diverse overlapping a...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345940730010901
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abstract：:The microstructure of the set glass-polyalkenoate cement has not been undertaken beyond a study where an Electron Probe Micro Analyser was used. The purpose of this investigation was to determine the ion distribution in matrix parts of the set cement by means of Secondary Ion Mass Spectrometry (SIMS). Among the techni...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345990780011301
更新日期：1999-01-01 00:00:00
abstract：:Ten dental casting alloys were tested for alloy-element release into cell-culture medium, and this release was related to alloy composition, alloy microstructure, and alloy cytotoxicity (previously determined). Cell-culture medium was analyzed for alloy elements by flame atomic absorption. Concentrations of elements i...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345910700060301
更新日期：1991-06-01 00:00:00
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journal_title：Journal of dental research
pub_type： 杂志文章,meta分析,评审
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更新日期：2014-10-01 00:00:00
abstract：:In comparison with control rats. chronic administration of isoproterenol (IPR) caused enlargement of the parotid and submandibular glands and the synthesis of apparently new proteins, probably by acinar cells. The parotid and submandibular saliva secreted in response to methoxamine or IPR differed markedly in protein ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345800590062001
更新日期：1980-06-01 00:00:00
abstract：:Frequent consumption of cariogenic foods and bacterial infection are risk factors for early childhood caries (ECC). This study hypothesized that a short diet survey focused on frequency of foods, categorized by putative cariogenicity, would differentiate severe ECC (S-ECC) from caries-free children. Children's diets w...
journal_title：Journal of dental research
pub_type： 杂志文章
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更新日期：2010-11-01 00:00:00
abstract：:The authors tested the hypothesis that obstructive sleep apnea (OSA) signs/symptoms are associated with the occurrence of temporomandibular disorder (TMD), using the OPPERA prospective cohort study of adults aged 18 to 44 years at enrollment (n = 2,604) and the OPPERA case-control study of chronic TMD (n = 1,716). In ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034513488140
更新日期：2013-07-01 00:00:00
abstract：:When measured once, psychological stress predicts development of painful temporomandibular disorder (TMD). However, a single measurement fails to characterize the dynamic nature of stress over time. Moreover, effects of stress on pain likely vary according to biological susceptibility. We hypothesized that temporal es...
journal_title：Journal of dental research
pub_type： 杂志文章
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更新日期：2015-09-01 00:00:00
abstract：:Human saliva contains a number of phosphorylated acidic proline-rich proteins (APRP). Monkey parotid saliva contains a similar protein with the same phosphorylated sequences as the human proteins. A crude protein kinase was prepared from Macaca fascicularis parotid glands which phosphorylated human APRP. The enzyme wa...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345860650030601
更新日期：1986-03-01 00:00:00
abstract：:Bacteroides forysthus has been shown to be prevalent among patients with periodontitis. Conventional microbiological methods used to identify this bacterium, however, are laborious and time-consuming and are therefore not well-suited for screening purposes. We have developed a polymerase chain-reaction (PCR) method wh...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345970760070701
更新日期：1997-07-01 00:00:00
abstract：:The synchronized cyrstal dissolution hypothesis previously proposed to explain the unusual dissolution behavior of human dental enamel and hydroxyapatite in partially saturated acidic media has been critically examined with dissolution-dialysis transport experiments. The findings are in accord with the hypothesis. A m...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345770560040701
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abstract：:The pellicle serves as a multifunctional protective layer, providing, e.g., lubrication and remineralization and also acting as a diffusion barrier. In addition, since the formation of the pellicle precedes the adhesion of micro-organisms, it is also important as a conditioning film. We present a novel approach to stu...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034512456704
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abstract：:In mammals, the periodontal ligament (PDL) is a highly specialized tissue which facilitates tooth eruption and lends mechanical support to the tooth once in occlusion. The PDL extracellular matrix fibers play a major role in such functions. During its development, the spatial arrangement of the PDL extracellular matri...
journal_title：Journal of dental research
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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
pub_type： 杂志文章
doi：10.1177/00220345960750020301
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abstract：:Ten cats were immunized with subcutaneous injections of keyhole limpet hemocyanin (KLH). After it was determined that the experimental animals had developed circulating antibodies to KLH, challenge doses of KLH were administered via the root canal system. The radiographic and histologic findings suggest that antigen-a...
journal_title：Journal of dental research
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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：:Severe early childhood caries (S-ECC) is a multifactorial disease that can lead to suffering and reduced oral health-related quality of life in young children. The bacterial and fungal composition of dental plaque and how children's sex is associated with S-ECC are largely unknown. In this study, V4-16S rRNA and ITS1 ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/0022034520908595
更新日期：2020-06-01 00:00:00
abstract：:Molecular studies indicate that epigenetic events are important in determining how the internal enamel epithelium folds during odontogenesis. Since this process of folding leads to the subsequent arrangement of cusps on molar teeth, we hypothesized that intercuspal distances of human molar teeth would display greater ...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/154405910308200505
更新日期：2003-05-01 00:00:00
abstract：:Two copper-free amalgams expanded excessively after storage in air at 60 degrees C for about five yr. One expanded significantly at 37 degrees C and slightly at 23 degrees C. High silver content, absence of copper, and presence of small amounts of zinc, or all three, seemed to promote very high expansions at 60 degree...
journal_title：Journal of dental research
pub_type： 杂志文章
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更新日期：1982-06-01 00:00:00
abstract：:Antidromic stimulation of sensory nerves has been shown to increase blood flow in the tissue they innervate. This study was designed to determine if antidromic vasomotor responses occur in feline dental pulp and if they are mediated by branched axons supplying both tooth pulp and gingiva. Dynamic changes in pulpal blo...
journal_title：Journal of dental research
pub_type： 杂志文章
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更新日期：1994-12-01 00:00:00
abstract：:The efficacy of a new remineralization system was determined in vivo by maintaining a low concentration of approximately 1 ppm fluoride for 48 hrs against a demineralized human tooth. Human subjects were selected who wore removable partial dentures containing two or more of the demineralized teeth with film system. Th...
journal_title：Journal of dental research
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abstract：:Intra-oral wounds, like wounds in children, demonstrate privileged healing when compared with adult wounds at extra-oral sites. This study investigated whether this preferential healing is related to an increased ability of oral mucosal fibroblasts to reorganize extracellular matrix (ECM) when compared with their derm...
journal_title：Journal of dental research
pub_type： 杂志文章
doi：10.1177/00220345960750060601
更新日期：1996-06-01 00:00:00
abstract：:The effect of combined administration of chlorhexidine and fluoride in the drinking water of hamsters on plaque and caries prevention was studied. Plaque indices of the hamsters receiving chlorhexidine either alone or simultaneously with fluoride were significantly lower than those of the control and fluoride only tre...
journal_title：Journal of dental research
pub_type： 杂志文章
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