abstract：:The object of the present study was an attempt to relate fluoride concentration in enamel, caries experience, and the degree of fluorosis in a community residing in an area with a high level of fluoride. A significant difference was found between the male and female samples for the F and D parameters. A positive corre...

journal_title：Journal of dental research

authors： Bischoff JI,van der Merwe EH,Retief DH,Barbakow FH,Cleaton-Jones PE

更新日期：1976-01-01 00:00:00

abstract：:Direct FA staining for S mutans serotypes may be performed on smears made from plaque or strain isolates and on colonies attached to agar plates of black membrane filters. Staining with single conjugates directed to S mutans serotypes (a to e) as well as with polyvalent a-, b-, d-, f-fluorescein label and c-, e-rhodam...

journal_title：Journal of dental research

authors： Thomson LA,Little W,Hageage GJ

更新日期：1976-01-01 00:00:00

abstract：:Polynomial and catenary equations were fit by least square error methods to the dentitions of seven children with "normal" occlusion. Mean and mean square error were then used to analyze accuracy of curve fits and asymmetries of arches. A lack of congruency for the "lines of occlusion" common to the maxilla and mandib...

journal_title：Journal of dental research

authors： Pepe SH

更新日期：1975-11-01 00:00:00

abstract：:Stress-relaxation measurements were performed on specimens of radicular human dentin. The relaxation modulus showed a linear dependence on the logarithm of time and the approximation to the logarithmic distribution function of relaxation times was used to predict the behavior of other viscoelastic properties. This exp...

journal_title：Journal of dental research

authors： Duncanson MG Jr,Korostoff E

更新日期：1975-11-01 00:00:00

abstract：:Iodoacetate at 10(-3) M and 10(-4) M concentrations was found to strongly inhibit incorporation of both 14C-choline and 3H-inositol into phospholipids of calvaria from newborn rats; it had somewhat less effect on ethanolamine incorporation and almost no effect on serine incorporation. Similar though less dramatic resu...

journal_title：Journal of dental research

authors： Dirksen TR,Schuster GS,McKinney R,Bustos SE

更新日期：1975-09-01 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：:Blood cortisol levels of oral surgery patients were analyzed to objectively determine the effect of intravenous sedation on surgical stress. Results showed a measure of sedation but did not adequately reflect the stress of oral surgery or the changes produced by intravenous sedation. ...

journal_title：Journal of dental research

authors： Bunch FL,Allen GD,Jorgensen NB

更新日期：1975-09-01 00:00:00

abstract：:The accelerating activity of N,N-substituted aminoethyl methacrylates on the curing of methyl methacrylate and composite resins with benzoyl peroxide is somewhat smaller than that of dimethyl-p-toluidine. Tesins cured with aminoethyl methacrylates containing a p-tolyl and 3,5-xylyl substituent on the nitrogen atom tur...

journal_title：Journal of dental research

authors： Dneboský J,Hynková V,Hrabák F

更新日期：1975-07-01 00:00:00

abstract：:The solubilities of extracellular polysaccharide fractions produced by 14 oral streptococcal strains were compared in water, aqueous lithium and guanidine salt solutions, dimethyl sulfoxide (DMSO), and a 9:1 DMSO-water mixture. The best results for solubilizing the fractions were obtained with the DMSO-water mixture p...

journal_title：Journal of dental research

authors： Lamberts BL,Meyer TS,Simonson LG

更新日期：1975-07-01 00:00:00

abstract：:Known antimalarial compunds from several chemical classes were tested for their ability to inhibit in vitro growth of microorganisms causing dental plaque and to prevent the development of plaque in a hamster model. Approximately a third of the compounds tested inhibited in vitro growth; however, none prevented develo...

journal_title：Journal of dental research

authors： Kinnamon KE,Eckermann EH,Tempel TR,Smith JH,Wolf CR

更新日期：1975-05-01 00:00:00

abstract：:Data from the actual private practices of two dentists were compared with respective data from the participation of the same two dentists in a laboratory model of private practice conducted in the University of North Carolina Dental Research Center. The findings show that a laboratory model can be established which ac...

journal_title：Journal of dental research

authors： Chadwick DG

更新日期：1975-05-01 00:00:00

abstract：:The accumulated posteruptive tooth age was calculated for 212 children with Down's syndrome and 124 of their unaffected sibs. Posteruptive tooth age was shown to vary widely with different morphological permanent tooth types at the same chronological age. Girls in both groups had greater accumulated posteruptive tooth...

journal_title：Journal of dental research

authors： Orner G

更新日期：1975-05-01 00:00:00

abstract：:Temperature elevations were measured in the pulp chamber of full cast crown preparations during impression taking with modelling compound in copper bands. Uncontrolled flaming, controlled flaming, and water heating of the bands produced temperatures of 53, 44, and 41.5 C, respectively. The time involved in restoring t...

journal_title：Journal of dental research

authors： Grajower R,Kaufman E,Stern N

更新日期：1975-03-01 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

authors： Mahler DB,Adey JD,Van Eysden J

更新日期：1975-03-01 00:00:00

abstract：:Incubation of saliva supernatant after three hours at 37 C revealed that salivary anionic proteins were susceptible to enzymatic attack by salivary enzymes not removable by centrifugation at 10,000 g. In the presence of washed suspensions of S mutans or S sanguis additional changes in electrophoretic behavior of anion...

journal_title：Journal of dental research

authors： Cowman RA,Fitzgerald RJ

更新日期：1975-03-01 00:00:00

abstract：:Cytotoxicity of fine cut amalgam was persistent until 24 hours after trituration in vitro, whereas cytotoxicity of spherical amalgam diminished more quickly. Increasing mercury content in spherical amalgam increased cytotoxicity. Possible reactions for the diminution of cytotoxicity of amalgams with time are discussed...

journal_title：Journal of dental research

authors： Kawahara H,Nakamura M,Yamagami A,Nakanishi T

更新日期：1975-03-01 00:00:00

abstract：:Seven oral doses of demethylchlortetracycline were administered to monkeys that received serial injections of lead acetate to intravitally stain calcification sites. Bone growth was greatly inhibited, whereas dentin apposition was spared from the cumulative toxicity of demethylchlortetracycline. Cessation of bone grow...

journal_title：Journal of dental research

authors： Yen PK,Shaw JH

更新日期：1975-03-01 00:00:00

abstract：:Microducers and modified cephalometric roentgenogram techniques were used to study maximum biting forces and moments in an adult male. The force at the second molar was approximately 10% greater than that at the first molar. At the second molar, the moment of force was approximately 15% less than its value at the firs...

journal_title：Journal of dental research

authors： Mansour RM,Reynik RJ

更新日期：1975-01-01 00:00:00

abstract：:Schoolchildren residing in a fluoride-deficient area were provided either a sodium fluoride (0.1% F) or a nonfluoride dentifrice for home use. About half the children provided each type of dentifrice were also given an initial prophylaxis. Combining the data with regard to the type of dentifrice indicated that the sod...

journal_title：Journal of dental research

authors： Stookey GK,Beiswanger BB

更新日期：1975-01-01 00:00:00