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 were positively birefringent and covered with a thin negatively birefringent surface layer 200-250 microns thick. Cervical areas were negatively birefringent. Transmission electron microscopy of argon-ion-beam thinned specimens of affected enamel revealed large voids, disruption in the packing of crystals and spacing at prism boundaries. In the surface layer of enamel from erupted and unerupted teeth, the intra- and interprismatic spaces were occluded by fine crystals or amorphous material. A well-defined prism structure and close crystal packing were found in cervical enamel. The ultrastructure of these pigmented enamels was similar to and consistent with a hypomaturation type of amelogenesis imperfecta.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Rodda JC,Palamara J,Phakey PP,Smillie ACdoi
10.1016/0003-9969(89)90127-1subject
Has Abstractpub_date
1989-01-01 00:00:00pages
475-81issue
6eissn
0003-9969issn
1879-1506pii
0003-9969(89)90127-1journal_volume
34pub_type
杂志文章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
pub_type： 杂志文章
doi：10.1016/0003-9969(87)90097-5
更新日期：1987-01-01 00:00:00
abstract：:The surface zone of human deciduous and permanent enamel was examined following sectioning, polishing and etching. Three main types of surface were where prisms reached the surface, where the prisms were not discernible and those formed by a complex of both types. The aprismatic layers were measured and the percentage...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(82)90147-9
更新日期：1982-01-01 00:00:00
abstract：:Simultaneous recordings of the activity of the masseter and anterior temporalis and of jaw movement were made on 10 healthy dentate volunteers while they chewed roasted peanuts in their habitual manner. The quantity of food taken was altered by varying (a) its total weight (mouthful) between 8 and 1 g, but with a fixe...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(91)90120-j
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:Obtaining high number of stem cells is of interest for cell based therapies. N-Acetyl-l-cysteine (NAC) acts as a source of sulfhydryl groups and an anti-oxidative agent. The aim of this study was to test different NAC concentration on proliferation and differentiation of deciduous teeth dental pulp stem cells...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2016.06.002
更新日期：2016-10-01 00:00:00
abstract：:Micelles represent macromolecular structures in saliva and the aim of this study was to identify salivary proteins that occur in these globular particles. Micelles were isolated from whole saliva (WS) collected from three individuals and analysed in different experiments. Samples were subjected to polyacrylamide gel e...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2003.11.007
更新日期：2004-05-01 00:00:00
abstract：OBJECTIVE:This controlled split-mouth study aimed to estimate the effect of caries and related treatment on concentrations of interleukin (IL)-2, interferon (IFN)-γ, IL-12, IL-17A, IL-13, IL-10, IL-6, IL-5, IL-4, IL-22, tumor necrosis factor (TNF)-α, and IL1-β in gingival crevicular fluid (GCF) of caries affected teeth...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2019.104620
更新日期：2020-02-01 00:00:00
abstract：:In 14 ovariectomized and 15 control rats, killed at intervals over a 117-day period, the height of the mandible in the molar region was determined radiographically. Mandibular height was significantly related to time after operation in both groups, but their rate of mandibular growth was not significantly different. I...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(90)90110-v
更新日期：1990-01-01 00:00:00
abstract：:Age-related changes in the content of non-reducible crosslink amino acids, pyridinoline and histidinoalanine, in rat mandibular bone were studied. The pyridinoline content markedly increased up to 12 months of age and thereafter slightly increased. The histidinoalanine content was low until 3 months of age, but therea...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(85)90075-5
更新日期：1985-01-01 00:00:00
abstract：AIM:Different enzyme-containing toothpastes are available on the market. The aim of the present in situ study was to investigate their efficacy for immobilisation of protective enzymes in the pellicle layer. METHODS:Pellicle formation took place in situ on bovine enamel slabs fixed to individual upper jaw splints carr...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2010.03.020
更新日期：2010-07-01 00:00:00
abstract：OBJECTIVE:Streptococcus mutans, a gram-positive oral bacterium, has been identified as one of the principal etiological agents of human dental caries. To clarify the nature of the difference anti-biofilm effect against S. mutans between Assam tea from Camellia sinensis var. assamica, partially fermented, and green tea ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2016.04.002
更新日期：2016-08-01 00:00:00
abstract：:Lymphocytes isolated from chronically-inflamed tissues were assessed for their ability to produce lymphokines without further stimulation in vitro. Cells were extracted from tissue obtained from 42 patients undergoing periodontal surgery. Cultures were set up in triplicate and supernatants collected after 48 h were as...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(85)90094-9
更新日期：1985-01-01 00:00:00
abstract：OBJECTIVE:This study aimed to evaluate the effect of fluoridated dentifrice (FD) and mouthwash (FM) under different treatment regimens on root caries (RC) inhibition. METHODS:Dual-species biofilms formed by Streptococcus mutans and Lactobacillus casei were grown on the surface of bovine root dentine slabs which were e...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2015.07.018
更新日期：2015-10-01 00:00:00
abstract：:An immunofluorescence study of the expression of keratin 14 (K14) during the formation of filiform papillae was performed and the progress of keratinization of the epithelium of the rat tongue was monitored on semi-ultrathin sections by laser-scanning microscopy. Differential interference contrast (DIC) images were al...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(03)00118-3
更新日期：2003-08-01 00:00:00
abstract：:The secretions (HPS) contained an arylamidase-like enzyme discovered by chromatography on Sephadex G-100 Superfine columns using N-L-alanyl-2-naphthylamine (2NA) as substrate. The enzyme was fractionated in the void volume, suggesting that its molecular weight was 150,000 or higher. It hydrolysed, with decreasing rate...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(85)90050-0
更新日期：1985-01-01 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
pub_type： 杂志文章
doi：10.1016/0003-9969(87)90093-8
更新日期：1987-01-01 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
pub_type： 杂志文章
doi：10.1016/0003-9969(89)90011-3
更新日期：1989-01-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:Sickle cell anaemia (SCA) is the most frequent haematological hereditary disease. Children with SCA are submitted to long-term prophylactic therapy with penicillin, but little is known about its impact on oral microflora. The aim of this study was to evaluate the oral microbial colonization of ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2014.05.014
更新日期：2014-10-01 00:00:00
abstract：:Counts of cultivable Porphyromonas gingivalis, assays of microbial proteases and the concentration in gingival crevicular fluid of proteoglycan metabolites were investigated at periodontitis and gingivitis sites in 16 patients with chronic adult periodontitis before and after treatment. Two periodontitis sites and two...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(96)00103-3
更新日期：1997-01-01 00:00:00
abstract：:Gland size, amylase activity, total proteins and DNA concentrations were measured in parotid gland during chronic heat exposure (34 degrees C). Subcellular fractionation was performed. Exposure to heat resulted in a decrease in gland size and in DNA concentration; amylase activity/100 mg tissue and amylase specific ac...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(83)90059-6
更新日期：1983-01-01 00:00:00
abstract：OBJECTIVE:To provide a systematic review of the effects of the bite-raised condition in animal models, a widespread technique in modern orthodontics. DESIGN:A systematic review of the literature was conducted. Original articles were searched through Pubmed, Cochrane Central database and Embase until December 2018. RE...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2019.104516
更新日期：2019-11-01 00:00:00
abstract：:The net surface charge of various oral streptococci were assessed by aqueous two-phase partitioning in a dextran-polyethylene glycol system. Great variability was found among individual strains within all species tested. Type 1 strains of Streptococcus sanguis serotypes which have been found to be more adherent, expos...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(81)90114-x
更新日期：1981-01-01 00:00:00
abstract：:Uncommon serotypes were tested for their ability to induce aggregation in platelet-rich plasma. Both uncommon and common serotypes induced platelet aggregation in rabbit platelet-rich plasma, but serotonin release was higher with the uncommon serotypes. Aggregation at ATP release varied between uncommon and common ser...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(91)90132-e
更新日期：1991-01-01 00:00:00
abstract：:Close association between nerve terminals and preodontoblasts, odontoblasts and predentine was observed during healing after pulpotomy. The nerve terminals frequently contained large numbers of synaptic vesicles. Terminals with many vesicles tended to be fewer in the predentine than in the odontoblastic layer. The dis...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(95)00018-k
更新日期：1995-07-01 00:00:00
abstract：:Most authorities agree that the hydrodynamic theory of dentine sensitivity best explains the stimulus-response relations of most painful stimuli. However, as the usual hydrodynamic stimuli are so different, it has been impossible to compare them. The equivalency of hydrodynamic stimuli can be evaluated from measuremen...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(96)00059-3
更新日期：1996-11-01 00:00:00
abstract：OBJECTIVE:To test the association of child's growth/development status and socioeconomic variables with dental emergence patterns. DESIGN:A sample of 359 children belonging to a birth cohort of over 5000 children born in 1993 in Pelotas (Brazil) was studied in 1998-1999. Previously trained observers collected birthwei...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2006.12.001
更新日期：2007-06-01 00:00:00
abstract：:In adult miniature pigs (Sus scrofa) fibres of the masseter contract differentially, helping to produce the successive movements of the mandible during the chewing cycle. In infant pigs, however, most fibres of the masseter contract simultaneously. One hypothesis to explain the ontogenetic change in contraction patter...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(91)90116-c
更新日期：1991-01-01 00:00:00
abstract：:The response to stimulation of the parasympathetic innervation to parotid or submandibular glands of reserpinized rats was altered from that of untreated rats. Thus, acute reserpinization, like other types of sympathectomy, resulted in increase in volume of parasympathetically-evoked parotid or submandibular saliva wh...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(84)90040-2
更新日期：1984-01-01 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
pub_type： 杂志文章
doi：10.1016/0003-9969(87)90033-1
更新日期：1987-01-01 00:00:00
abstract：BACKGROUND:Interferon gamma (IFN-γ) is one of the key regulatory cytokines that has a significant effect on immune responses. It may be important in the chronic inflammatory diseases such as periodontitis in which increased IFN-γ levels were found. The aim of this study was to analyze +874A/T polymorphism in the IFN-γ ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2010.09.005
更新日期：2011-02-01 00:00:00
abstract：OBJECTIVE:The complex biological, physicochemical process of human dental enamel formation begins in utero and for most teeth takes several years to complete. Lost enamel tissue cannot regenerate, therefore a better understanding of the spatial and temporal progression of mineralization of this tissue is needed in orde...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2013.08.012
更新日期：2013-11-01 00:00:00
