Results 301 to 310 of about 47,945 (344)

Raman Spectra of Human Dental Calculus

Journal of Dental Research, 1993
Raman spectra of human dental calculus have been observed for the first time by use of micro-Raman spectroscopy. The spectral features of calculus were influenced easily by heating caused by laser irradiation. Therefore, the measurements were carried out at relatively low power (5 mW, 1-μm spot size).
Tsuda, H., Arends, J.
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Ancient DNA analysis of dental calculus

Journal of Human Evolution, 2015
Dental calculus (calcified tartar or plaque) is today widespread on modern human teeth around the world. A combination of soft starchy foods, changing acidity of the oral environment, genetic pre-disposition, and the absence of dental hygiene all lead to the build-up of microorganisms and food debris on the tooth crown, which eventually calcifies ...
Weyrich, L., Dobney, K., Cooper, A.
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Constituents of Dental Calculus from Sheep

Nature, 1963
WHILE the crystalline composition of dental calculus in man is well elucidated, very little is known about such calculus in animals. We have had the opportunity of comparing the results of X-ray diffraction examinations of samples of dental calculus from sheep from Dundee, Scotland, and from Greenland.
A, UNMACK, S L, ROWLES
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Scanning electron microscopy of dental calculus

Calcified Tissue Research, 1976
The morphologic structure of anorganic dental calculus was studied by means of the scanning electron microscope. From surface observations, calculus is apparently composed of two components with distinguishable patters of calcification. One component is formed by the precipitation of minute calcific crystals on microorganisms and intermicrobial ...
J, Lustmann, J, Lewin-Epstein, A, Shteyer   +2 more
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Tobacco smoking and supragingival dental calculus

Journal of Clinical Periodontology, 1999
Abstract. Supragingival calculus is frequent in all ages from adolescence to old age. The influence of tobacco smoking on the occurrence and severity of supragingival calculus has received surprisingly little attention. The present investigation conducted in a population of 258 dentally aware individuals in the age range 20–69 years, was initiated to ...
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Tobacco smoking and subgingival dental calculus

Journal of Clinical Periodontology, 2005
AbstractObjective: A radiographic investigation into the relationship between tobacco smoking and subgingival dental calculus was conducted in an adult population, including 48 current smokers, 57 former smokers, and 125 non‐smokers.Material and Methods: Assessment of subgingival calculus was based on a full set of radiographs. Mesial and distal root
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Dental calculus

Oral Surgery, Oral Medicine, Oral Pathology, 1960
Arne Forsberg, Curt Lagergren, Tore Lönnerblad   +2 more
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Supragingival dental calculus

Periodontology 2000, 1995
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Dental Calculus

2017
Shalu Bathla, Ashutosh Nirola
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Dental Calculus in Lathyritic Rats

Journal of Dental Research, 1969
F C, Devoto, A, Abramovich
openaire   +2 more sources