abstract：:Transmitted and polarized light microscopy of unerupted and erupted teeth affected by a pigmented anomaly found in two geographically isolated Polynesian populations, the New Zealand Maori and the French Polynesian Marquesas Islander, showed similar histological characteristics. Mounted in water, the pigmented areas w...

journal_title：Archives of oral biology

authors： Rodda JC,Palamara J,Phakey PP,Smillie AC

更新日期：1989-01-01 00:00:00

abstract：:Salivary proteins and glycoproteins that participate in the formation of 2-h in vivo enamel pellicle were determined utilizing polyacrylamide gel electrophoresis [sodium dodecyl sulphate (SDS)-PAGE and anionic PAGE]/Western transfer analyses, and specific radiolabelling/SDS-PAGE fluorography. The sensitivity of these ...

journal_title：Archives of oral biology

authors： Al-Hashimi I,Levine MJ

更新日期：1989-01-01 00:00:00

abstract：:The zinc and strontium content of enamel and dentine from humans aged 9-64 yr was analysed, after systematic sampling, by X-ray fluorescence. Relatively high levels of zinc were found in both hard tissues but there was no significant increase with age. Zinc content decreased significantly from outer to inner enamel an...

journal_title：Archives of oral biology

authors： Frank RM,Sargentini-Maier ML,Turlot JC,Leroy MJ

更新日期：1989-01-01 00:00:00

abstract：:Inflamed gingiva contain a serine proteinase which could not previously be identified on the basis of its substrate specificity and inhibitor response. Using the substrate ZAlaArgArgAFC at alkaline pH, the enzyme was shown to be extracted more efficiently in high salt buffer. Inclusion of NaCl in assays, however, caus...

journal_title：Archives of oral biology

authors： Cox SW,Eley BM

更新日期：1989-01-01 00:00:00

abstract：:Periapical granulomas were induced, with a success rate of about 60% (66 granulomas produced out of 109 roots treated) in mandibular premolars. The average wet weight of the granulomas, 46.1 +/- 34.5 mg (mean +/- SD, n = 22), was sufficient to allow individual specimens to be used for most of the biochemical analyses....

journal_title：Archives of oral biology

authors： Asai K,Kishi J,Nakamura H,Hayakawa T

更新日期：1989-01-01 00:00:00

abstract：:Healing of the periodontal ligament (PDL) after extrusive luxation of two upper central incisors was evaluated when one tooth was splinted and the other left untreated. One millimetre thick, transverse sections of tooth, PDL and alveolar bone were examined in a materials testing machine. Load deformation curves were r...

journal_title：Archives of oral biology

authors： Mandel U,Viidik A

更新日期：1989-01-01 00:00:00

abstract：:Previous studies using potassium ion-selective microelectrodes have demonstrated that potassium concentrations in dental plaque fluid obtained by centrifugation are identical to whole plaque values determined immediately after collection. Such procedures were now used to examine the variations in potassium concentrati...

journal_title：Archives of oral biology

authors： Carey CM,Chow LC,Tatevossian A,Vogel GL

更新日期：1988-01-01 00:00:00

abstract：:This study was undertaken to reveal detailed changes in fluoride distribution at different developmental stages of upper incisor enamel under various fluoride administration regimes. Four groups of Wistar rats received water containing 0, 25, 50 and 100 parts/10(6) fluoride respectively for 10 weeks. Five different en...

journal_title：Archives of oral biology

authors： Kato K,Nakagaki H,Sakakibara Y,Kameyama Y,Weatherell JA,Robinson C

更新日期：1988-01-01 00:00:00

abstract：:Chronic snuff dipping has been associated with oral cancer in man and experimental animals. Here, the effects of a water-extract of snuff on the in-vitro development of human lymphokine-activated killer (LAK) activity were examined. The snuff extract inhibited both LAK cytotoxicity and DNA synthesis in a dose-dependen...

journal_title：Archives of oral biology

authors： Lindemann RA,Park NH

更新日期：1988-01-01 00:00:00

abstract：:Streptococcus mutans GS5, Lactobacillus casei DSM20011 and Actinomyces viscosus T14 produce artificial caries in the roots of extracted teeth. Roots were coated with wax leaving an 8 mm2 window exposed on the buccal surfaces, and then incubated for 8 days in the presence of the test organism, the synthetic medium bein...

journal_title：Archives of oral biology

authors： Kaufman HW,Pollock JJ,Gwinnett AJ

更新日期：1988-01-01 00:00:00

abstract：:An engineering model of the periodontal ligament fibres was used to calculate length changes in the fibres with: direct occlusal forces on the tooth, occlusal loads on other teeth in the arch and splinting. The fibre elongations appear to influence tooth eruption, the clinical behaviour of splinted and non-splinted te...

journal_title：Archives of oral biology

authors： Katona TR,Tackney VM,Keates JK

更新日期：1988-01-01 00:00:00

abstract：:The origin of ureolytic activity in artificial-mouth plaques was established by assessing the contribution to plaque ureolytic activity of the isolated bacteria. To overcome losses of ureolytic activity caused by the unstable presence of urease in oral bacteria, ureolytic bacteria were isolated from an exceptionally a...

journal_title：Archives of oral biology

authors： Sissons CH,Hancock EM,Perinpanayagam HE,Cutress TW

更新日期：1988-01-01 00:00:00

abstract：:Thirty-one teeth taken post-mortem from 10 subjects aged from 40 to 66 years were studied. A close relationship was found between fluoride (F) distribution and histological structure. Although, as in all mineralized tissues, F concentrations tended to be highest towards the external surface, individual patterns of F d...

journal_title：Archives of oral biology

authors： Nakagaki H,Kawai K,Murakami T,Sakakibara Y,Ohno N,Weatherell JA,Robinson C

更新日期：1988-01-01 00:00:00

abstract：:These immunoglobulins were quantitated in 303 individuals belonging to 37 negroid and 26 caucasoid American families. Levels varied widely from individual to individual and frequency distributions were skewed toward the low levels. IgA was detected in all individuals except three children; two of whom were young and t...

journal_title：Archives of oral biology

authors： Grundbacher FJ

更新日期：1988-01-01 00:00:00

abstract：:The application of detergent solutions to dissociated molar dental papillae of mice permitted precise observation of the extracellular fibrillar material in the odontoblast layer and the predentine. Two types of fibrils were identified: cross-banded fibrils of variable diameter (25-200 nm) and aperiodic microfibrils o...

journal_title：Archives of oral biology

authors： Meyer JM,Staubli A,Ruch JV

更新日期：1988-01-01 00:00:00

abstract：:The administration of hydrocortisone after excision of DMBA-induced tumours in hamster cheek pouch produced cervical lymph-node metastases in 9 out of 13 animals (69 per cent), and resulted in lung metastasis in 1 animal. In the control group, which received no cortisone but had tumours cut from the pouch, 4 out of 9 ...

journal_title：Archives of oral biology

authors： Kage T,Mogi M,Katsumata Y,Yamada T,Chino T

更新日期：1988-01-01 00:00:00

abstract：:A soluble trypsin-like enzyme (STE) was purified from a cell- and particle-free culture supernatant of this bacterium by a combination of ultra-centrifugation, ammonium-sulphate precipitation and gel-filtration chromatography on Sephacryl S-200. Trypsin-like activity in the culture supernatant was associated with a 58...

journal_title：Archives of oral biology

authors： Smalley JW,Birss AJ,Shuttleworth CA

更新日期：1988-01-01 00:00:00

abstract：:Periodontal bone loss was induced in mice of different genotypes by oral inoculation with Actinomyces viscosus. Relatively high bone loss occurred in the mutant X-linked immune deficiency, implicating the humoral immune system. Maximum bone loss was always associated with inoculations of 1.6 x 10(7) colony forming uni...

journal_title：Archives of oral biology

authors： Gilbert AD,Sofaer JA

更新日期：1988-01-01 00:00:00

abstract：:The effects of ligation on body weight, protease activity and hair kynurenine content were observed. The body weights of parotid gland(PT)-ligated and of combined submandibular (SM)-, sublingual (SL)- and PT-ligated rats were much less than those of sham-operated controls. However, the weights of SM,SL-ligated rats we...

journal_title：Archives of oral biology

authors： Ikeno K,Saikatsu S,Uno T,Ikeno T

更新日期：1988-01-01 00:00:00

abstract：:High-speed, high-resolution data (frontal plane) were collected from 6 Sprague-Dawley rats by opto-electronic mandibular tracking (OMT), followed by microcomputer analysis of individual chew cycles. Mastication comprised rapidly alternating, unilateral cycles with variable degrees of lateral translation. There was no ...

journal_title：Archives of oral biology

authors： Byrd KE

更新日期：1988-01-01 00:00:00

abstract：:Pulp tissues isolated from rats treated with either colchicine (0.5, 0.75 or 1.0 mg/kg) or beta-lumicolchicine (1.0 mg/kg) for 24 h were incubated in Tyrode buffer. Prostaglandin (PG) I2 and thromboxane (TX) A2 released into the medium were determined by radioimmunoassay as their stable metabolites, 6-keto-PGF1 alpha ...

journal_title：Archives of oral biology

authors： Hirafuji M,Ogura Y

更新日期：1988-01-01 00:00:00

abstract：:Reflex stimulation from eating hard chow caused variable degrees of watery vacuolation, most conspicuously in animals that had eaten the most food; this was accentuated by eating in the cold. Some vacuolation occurred in the absence of sympathetic impulses but there was much more in glands receiving both parasympathet...

journal_title：Archives of oral biology

authors： Garrett JR,Harrop TJ,Thulin A

更新日期：1987-01-01 00:00:00

abstract：:Biomechanical loads were varied by feeding diets of different consistencies. One group was fed hard diet for eight weeks, a second soft diet for eight weeks, and a third soft diet for four weeks followed by four weeks of hard diet. In all groups, alkaline-phosphatase activity was localized primarily in cells and extra...

journal_title：Archives of oral biology

authors： Bouvier M

更新日期：1987-01-01 00:00:00

abstract：:Electrical activity recorded during voluntary clenching by platinum hook intra-cutaneous electrodes was significantly higher (p less than 0.01) when the electrodes were placed parallel to the muscle fibres than across the fibres. The correlation between the parallel and transverse EMG recordings was highly significant...

journal_title：Archives of oral biology

authors： Ahlgren J,Henrikson T

更新日期：1987-01-01 00:00:00

abstract：:The effects of low concentrations of these fluorides on Streptococcus sobrinus, Streptococcus mutans, Streptococcus salivarius, Streptococcus mitior and Streptococcus sanguis were investigated. Without fluoride, mutans streptococci (Strep. mutans and Strep. sobrinus) produced more acid than the other strains; both flu...

journal_title：Archives of oral biology

authors： Zameck RL,Tinanoff N

更新日期：1987-01-01 00:00:00

abstract：:The proteolytic activity of N-benzoyl-D,L-arginine-p-nitroanilide hydrochloride, a trypsin-like protease, was weak, whereas strong glucose-6-phosphate dehydrogenase activity was found in all subjects. The enzyme activities of males and females were similar. ...

journal_title：Archives of oral biology

authors： Furuyama M,Koshika S,Kitamura Y,Nakayama Y

更新日期：1987-01-01 00:00:00

abstract：:This bacterium is implicated in periodontal diseases of human adult type. Secretory immunoglobulin A (IgA) purified from human colostrum (HC-IgA) was incubated with Bacteroides gingivalis cells or protease isolated from the culture supernatant of B. gingivalis; the digestion of IgA was determined by immunoelectrophore...

journal_title：Archives of oral biology

authors： Sato M,Otsuka M,Maehara R,Endo J,Nakamura R

更新日期：1987-01-01 00:00:00

abstract：:Suspensions of dispersed acini isolated by enzymatic (collagenase) digestion were used to investigate possible interactions between transmembrane K and Cl movements. The isotopic tracer 36Cl monitored uptake and efflux of Cl under conditions where K efflux was either stimulated or inhibited. Uptake (accumulation) of 3...

journal_title：Archives of oral biology

authors： Martinez JR,Cassity N,Reed P

更新日期：1987-01-01 00:00:00

abstract：:Extracts of these dental pulps from adult cats contained a non-dialysable agent or agents which could support neurone survival and neurite development for at least three days in neurone-enriched cultures of sympathetic ganglion cells from 11-day chick embryos. The neurone survival-promoting activity differed from nerv...

journal_title：Archives of oral biology

authors： Naftel JP

更新日期：1987-01-01 00:00:00

abstract：:These were characterized in stimulated saliva from 21 healthy volunteers using antibodies specific for human tissue-type plasminogen activator (t-PA) or urokinase. After pre-incubation with immunoglobulins, with and without specific antibodies, the fibrinolytic activity was assayed on fibrin plates containing plasmino...

journal_title：Archives of oral biology

authors： Kjaeldgaard M,Kjaeldgaard A

更新日期：1987-01-01 00:00:00

abstract：:Non-specific cholinesterase (ChE) activity was demonstrated in lamellated sensory corpuscles of the rat lip by light and electron microscopy using Karnovsky and Roots' method. ChE activity was present in the interlamellar spaces between neighbouring lamellae as well as in the peri-axonal space between axon terminals a...

journal_title：Archives of oral biology

authors： Watanabe I,Ide C

更新日期：1987-01-01 00:00:00

abstract：:The pH effects of urea metabolism were studied in washed salivary-sediment bacteria from subjects that had up to 10-fold variation in oral ureolytic activity, and in dispersed artificial-mouth plaques. Adequate evaluation required analysis of the [OH-] as well as the pH curve. An initial constant rate of pH-change, la...

journal_title：Archives of oral biology

authors： Sissons CH,Cutress TW

更新日期：1987-01-01 00:00:00

abstract：:Mandibular first-molar tooth germs were dissected from 16-day-embryo and new-born CD1 mice. By incubation in collagenase they were separated into enamel organ, papilla and follicle. Dental pulp was obtained from mandibular first molars of 3-, 7- and 10-day-old mice. Various combinations of epithelial and mesenchymal t...

journal_title：Archives of oral biology

authors： Palmer RM,Lumsden AG

更新日期：1987-01-01 00:00:00

abstract：:Two mechanisms that contribute to tooth eruption are proposed from analysis of the human jaws as elastic structures which are deformed intermittently under functional occlusal loads. One possible source of eruptive force is the transient pressure gradient established within each jaw as it is deformed. The second sourc...

journal_title：Archives of oral biology

authors： Katona TR,Boyle AM,Curcio FB,Keates JK,Mazzara RJ,Tackney VM

更新日期：1987-01-01 00:00:00

abstract：:The influence of indigenous Streptococcus mutans on naturally-occurring levels of IgA antibodies was studied in 42 lactating females. Breast milk, parotid and whole-saliva samples were collected and analysed by the ELISA method for IgA antibodies, reacting with antigens from Strep. mutans. All salivas and breast milk ...

journal_title：Archives of oral biology

authors： Camling E,Gahnberg L,Krasse B

更新日期：1987-01-01 00:00:00

abstract：:After single, oral doses, 8 h profiles of fluoride (F) concentrations in plasma were determined in healthy human volunteers. Bioavailability of F from bone-meal, calcium and CaF2 tablets was evaluated in relation to that of NaF. Tablets were administered either whole or as a finely-ground powder, either to fasting sub...

journal_title：Archives of oral biology

authors： Trautner K,Einwag J

更新日期：1987-01-01 00:00:00

abstract：:Enamel and cementum pellicles form by different adsorption of salivary and serum components to the tooth surface. The authors compared the constituents of surface pellicle formed on human enamel and cementum under three conditions: (1) natural pellicle, present on extracted teeth, which was formed by prolonged exposur...

journal_title：Archives of oral biology

authors： Fisher SJ,Prakobphol A,Kajisa L,Murray PA

更新日期：1987-01-01 00:00:00

abstract：:A mandibular kinesiograph was used to monitor the movement of the lower incisors of young dentate adults reading a standard text. An interface to a microcomputer which recorded and analysed these movements. As the tracings accumulated on the computer monitor, a characteristic pattern was produced. The dimensions of th...

journal_title：Archives of oral biology

authors： Howell PG

更新日期：1987-01-01 00:00:00

abstract：:Mandibles were cultured in the presence of dibutyryl cyclic AMP (1 mM) and theophylline (1 mM) and in control medium. Controls differentiated normally but the timing of events differed from that in ovo and feathers did not form. With elevated intracellular cyclic-AMP levels, membrane bone did not form in the earlier s...

journal_title：Archives of oral biology

authors： Tyler MS

更新日期：1986-01-01 00:00:00

abstract：:Ruthenium hexammine trichloride (RHT) used as a probe to visualize anion groups in the predentine and dentine of rat incisors, showed a complex distribution pattern including: intercellular proteoglycans (Pg), detected in the predentine as granules 10-15 nm in diameter and as filaments. Non-aggregating Pg was observed...

journal_title：Archives of oral biology

authors： Goldberg M,Septier D

更新日期：1986-01-01 00:00:00