Download or read book Ultrastructural Changes in Edta Treated Dental Enamel written by Seymour Hoffman and published by . This book was released on 1969 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enamel samples treated with EDTA for 2, 4, 7, and 24 hours respectively were examined with the SEM and compared to the appearance of sound, untreated enamel. It was apparent that the EDTA demineralized the rods from their peripheral borders centrally, thus progressively delineating these structures. A variety of prism forms were described, with the 'keyhole' and arcade variants predominating. Hexagonal and polygonal forms were not seen. Interprismatic material could not be positively identified. The prism-less zone and its reported crystallite orientation was supported by the findings in this study. Enamel rods from the striae of Retzius were studied and compared with those from intervening regions. Significantly fewer crystallites were present in prisms from the striae than from the adjacent contiguous areas, thus providing additional support that this region may represent an area of hypomineralization. Progressive loss of surface coatings by EDTA action were demonstrated revealing what appeared to be sub-surface continuity with prism sheaths and intercrystalline material. (Author).
Download or read book Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on 1969 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes subject section, name section, and 1968-1970, technical reports.
Download or read book Scanning Electron Microscopy written by and published by . This book was released on 1984 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1968-77 include the proceedings of the annual Scanning Electron Microscope Symposium, sponsored by the IIT Research Institute, and other workshops.
Download or read book Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt: First multi-year cumulation covers six years: 1965-70.
Download or read book Scanning Electron Microscopy Studies of Dental Enamel written by Seymour Hoffman and published by . This book was released on 1968 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Samples of sound, untreated enamel and enamel subjected to a number of different treatment procedures were selected for this study, to determine the potential of the scanning electron micro-scope as applied to the study of dental tissue. Sound enamel specimens were treated with acetate buffer (pH 4.0) and with EDTA (pH 7.94) for varying periods of time. The results were compared to those obtained from sound, untreated enamel specimens. Surface and sub-surface enamel morphology and bacteria-like structures were examined, photographed at magnifications ranging from 20X to over 100,000X, and described in relation to the ultra-structural morphology of enamel. Structures resembling enamel prisms, the 'prism-less' zone of surface enamel, the surface covering of an 'enamel skin' and sequential patterns of acid demineralization occuring preferentially down prism cores are described and illustrated. Comparison with EDTA-treated specimens revealed peripheral dissolution of enamel rods, in contrast to the acid effects. Organic surface coverings suggestive of dental plaque and microbial forms resembling cocci and lactobacilli were also shown. (Author).
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1971 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dental Caries written by George Edward White and published by Charles C. Thomas Publisher. This book was released on 1975 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1997 with total page 1860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1969 with total page 1306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1969-04 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1971-07-10 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970-07 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural and Chemical Organization of Teeth written by A Mills and published by Elsevier. This book was released on 2014-08-05 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural and Chemical Organization of Teeth
Download or read book Enamel written by Finchain and published by CRC Press. This book was released on 2000-01-01 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1970 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book South African Journal of Science written by and published by . This book was released on 1986 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the International Symposium on Amalgam and Tooth coloured Restorative Materials written by A. J. van Amerongen and published by . This book was released on 1975 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
