Results 301 to 310 of about 751,666 (339)

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, A. Shteyer, J. Lewin-Epstein   +2 more
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Diet and the aetiology of dental calculus

International Journal of Osteoarchaeology, 1999
The aetiology of dental calculus formation is not fully understood, but it is known that a number of factors play a role. Generally, anthropologists have overlooked the role of other causative factors in the formation of dental calculus, attributing it almost exclusively to diet, particularly protein consumption.
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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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Fluorescence of Dental Calculus from Cats, Dogs, and Humans and of Bacteria Cultured from Dental Calculus

Journal of Veterinary Dentistry, 1995
Recently we reported that feline and canine dental calculus fluoresced pink to red under long wavelength ultraviolet light due to the presence of porphyrin.1 Here we report the observation of such fluorescence in 30 of 30 cats, 30 of 30 dogs, and 8 of 13 supragingival samples and 5 of 5 subgingival samples of humans.
William C. Dolowy, Jason D. Parker, Mary Lou Brandes, Martin Gouterman, John C. Lind   +4 more
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Human dental calculus

Archives of Oral Biology, 1967
Abstract The inorganic chemical and crystallographic composition of seventy-three dental calculus samples of known origin has been investigated. The findings showed the average ash content to be 77%. Calcium, phosphorus, magnesium, fluoride and carbon dioxide averaged 34, 19, 0.9, 0.05 and 1.8% respectively on an ash weight basis.
G.J. van Campen, I. Lindstrom, P. Grøn
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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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Analysis of the Organic Portion of Dental Calculus

Journal of Dental Research, 1966
SYNOPSIS IN INTERLINGUA ANALYSE DEL PORTION ORGANIC DE CALCULO DENTAL.—Specimens de composite e de separate calculos supra- e subgingival e de calculos ab dentaturas esseva decalcificate per le uso de 0,1 N de HCl e de un solution de 15 pro cento de tetraacetato ethylenediaminic a un pH de 7,0 a 7,5.
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Permeability of Human and Rat Dental Calculus [PDF]

Journal of Periodontology, 1970
A. Baumhammers, E. A. Rohrbaugh
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The Ureolytic Activity of Dental Calculus [PDF]

Acta Odontologica Scandinavica, 1962
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Dental Calculus in Lathyritic Rats

Journal of Dental Research, 1969
Francisco C.H. Devoto, Abraham Abramovich   +1 more
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