Dental calculus x ray9/12/2023 Takazoe, I., Kurahashi, Y., Takuma, S.: Electron microscopy of intracellular mineralization of oral filamentous microorganisms in vitro. E.: Formation and inhibition of dental calculus, pp. N.: A scanning electron microscopic study of the growth of hydroxyapatite crystals. A.: Effect of salivary proteins on calcification of oral bacteria. A.: Calcification of oral bacteria: an ultrastructural study of two strains of Bacterionema matruchotii. ![]() Kerebel, B.: Apports du microscope electronique a balayage a l’histologie et a la pathologie dentaires. J.: The tooth surface in periodontal disease. J.: Morphology of calculus formation on the human tooth surface. F.: Electronmicroscopy of dental calculus. L., Takazoa, I.: Calcification of bacillary and streptococcal variants of Bacterionema matruchotii. Acad Sci 109, 4–13 (1963)Įnnever, J., Creamer, H.: Microbiologic calcification: Bone mineral and bacteria. 44, 92–95 (1973)Įnnever, J.: Intracellular calcification by oral filamentous microorganisms. K.: Scanning electron microscopy of supragingival calculus. It is, therefore, speculated that the crystal patters in type B centers might represent other known forms of calcium phosphates present in calculus, such as octacalcium phosphate, whitlockite and brushite.īaumhammers, A., Conway, J. The calcific precipitation in type A centers have been identified by X-ray diffraction as hydroxyapatite. These two calcification patterns are comparable, both in distribution and size, to what has been observed by means of the transmission electron microscope, and what Schroeder has designated as “types A&B centers of mineralization,” respectively. It exhibits a configuration of generally larger crystal growths of varying shapes and sizes. The other component, although having at least one common calcification front with the former, does not appear to be directly associated with microbial calcification. Thus, intracellular calcification is not evident at this stage of calculus development. Such calcified masses, often spherical in shape, have a sponge-like appearance with empty spaces representing the former sites of entombed and degenerated organisms. ![]() One component is formed by the precipitation of minute calcific crystals on microorganisms and intermicrobial substances (plaque matrix). From surface observations, calculus is apparently composed of two components with distinguishable patterns of calcification. The morphologic structure of anorganic dental calculus was studied by means of the scanning electron microscope.
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