Results 301 to 310 of about 111,070 (353)
Characteristics of Subgingival Plaque Microbiome in Japanese Older Adults With Healthy Gingiva
Journal of Clinical Periodontology, EarlyView.ABSTRACT Aim To elucidate the characteristics of the subgingival plaque microbiome in older adults without gingival inflammation. Materials and Methods Subgingival plaque from 180 participants was collected and analysed using 16S rRNA sequencing. Based on the clinical parameters at the sampling sites, participants were categorised as healthy (gingival ...
Tomoki Akatsu +5 more
wiley +1 more source
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Dental Enamel Electrochemistry
Journal of Dental Research, 1973The results of several experiments implicate electrochemical phenomena in the formation of dental caries. The passage of an electric current through enamel causes degradation and a carious appearance. The fluoride ion minimizes the variations in natural electric potentials and inhibits electric current.
John M. Lenoir, Robert A. Dickerson
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Dental Caries and Enamel Structure
Nature, 1966A GENERALLY accepted feature of the histology of ground sections of carious lesions in human dental enamel is the so called ‘dark zone’. This zone, which lies at the border of the lesion, between the main body and the translucent zone or normal enamel, shows positive birefringence when the section is placed in quinoline and viewed by polarized light ...
H. S. M. Crabb, K. V. Mortimer
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Enamel Opacities and Dental Esthetics
Journal of Public Health Dentistry, 1995Abstract Objectives: The purpose of this study was to determine the esthetic importance of different types of developmental enamel defect. Methods: In the first method used, individual subjects from three different populations with less than 0.1, 0.7, and 0.9 ppm fluoride in their drinking water, were asked about the appearance of their teeth and ...
Denis O'Mullane, Roger Philip Ellwood
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Proteomics and Genetics of Dental Enamel
Cells Tissues Organs, 2005The initiation of enamel crystals at the dentino-enamel junction is associated with the expression of dentin sialophosphoprotein (<i>DSPP,</i> a gene normally linked with dentin formation), three ‘structural’ enamel proteins – amelogenin <i>(AMELX),</i> enamelin <i>(ENAM),</i> and ameloblastin <i>(AMBN)</i ...
Jan C.-C. Hu +4 more
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Strontium Incorporation into Dental Enamel
Science, 1966Rats were raised on diets either rich or poor in strontium. Powder x-ray diffraction patterns suggest that isomorphous substitution of strontium for calcium occurs in the apatite of tooth enamel, and that strontium may form Sr 6 H 3 (PO 4 ) ⋅ 2H 2
Leon Singer +2 more
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Studies on the ultrastructure of dental enamel
Journal of Ultrastructure Research, 1963The different factors that influence the birefringence of dental enamel are discussed in detail. It is concluded that dental enamel cannot be regarded as a simple Wiener mixed body. From theoretical considerations as well as from experimental data it is found ( a ) that the apatite crystallites possess a birefringence of roughly (−) 0.007, ( b ) that ...
D. Carlström, J.-E. Glas
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Demineralization and Remineralization of Dental Enamel _____
Journal of Dental Research, 1979Experimentation in vitro using organic acid buffers as demineralizing media shows that caries-like lesions can be obtained which are very similar in morphology and developmental stages to early lesions formed naturally under oral conditions. The use of these chemical systems and of mechanistic models advanced to explain the unique histological ...
R.T. Zahradnik, E.C. Moreno
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