By Professor Dr. Hubert E. Schroeder (auth.)
In their contribution to the 1st variation of this instruction manual, entitled "The Teeth," LEHNER and PLENK (1936) mentioned the tissues constituting the "perio dontium" quite in brief. unlike the distinct paragraphs facing, for instance, tooth and dentine, the part (about forty pages and 20 illustra tions, regularly drawings) dedicated to periodontal tissues did not supply a actual assessment and precis of the modern wisdom and most modern advancements in study at the a variety of elements of the periodontium. as an alternative, a lot of the textual content was once an try and arrive at conclusions from frequently only semantic speculations, enjoying some of the faculties of suggestion opposed to one another, provid ing arguments in prefer of the authors' perspectives and arguments for the feasibility and likelihood of accepting or rejecting the usually diversified reviews, whereas the reader used to be spoke of the already latest literature for actual info. on account that 1936, besides the fact that, real info ofthe structural biology of the periodon tal tissues, i. e. their improvement, constitution, functionality, and body structure, were enormously prolonged and feature been across the world approved. With less opin ionated trust to deal with, this data has shaped the cast origin upon which analysis, prevention, and remedy within the fields of scientific perio dontology, modem orthodontics, and re- and transplantation techniques of the teeth were built.
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Of their contribution to the 1st version of this instruction manual, entitled "The Teeth," LEHNER and PLENK (1936) mentioned the tissues constituting the "perio dontium" relatively in brief. unlike the distinct paragraphs facing, for instance, tooth and dentine, the part (about forty pages and 20 illustra tions, usually drawings) dedicated to periodontal tissues didn't supply a genuine overview and precis of the modern wisdom and most modern advancements in learn at the a number of parts of the periodontium.
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Extra info for The Periodontium
12 a, b. Acellular afibrillar cementum (AAC) "spurs" covered by junctional epithelium (JE) , as seen with the light (a) and the electron microscope (b). Note lamella of AAC continuing into the acellular-extrinsic-fiber cementum (AEFC in a, b), and the transition of AAC to AEFC-matrix (b). CT, connective tissue; D , dentine; ES, enamel space. Magnification: a x 600; b x 2600. (SCHROEDER and LISTGAR TEN 1977) Fig. 13 a-d. Acellular afibrillar cementum (AAC) "islands" over the cervical enamel surface.
C) Acellular Extrinsic Fiber Cementum The AEFC variety of cementum, also termed" primary cementum" (SHMAMINE 1910), has been held to be the first of the various forms of cementum to be produced in the process of root genesis. , based on markers for cellular identification, proliferation, and metabolism, as well as on labeling of the accumulation of products), neither in man nor in any mammalian species. , to rather well-defined developmental systems characterized by particular classes of cells and their morphologically and biochemically defined products, the genesis of AEFC is still very obscure.
SCHROEDER and LISTGAR TEN 1977) Fig. 13 a-d. Acellular afibrillar cementum (AAC) "islands" over the cervical enamel surface. 6 mm coronal to the cemento-enamel junction. Note two "islands" of AAC covered and alternated by the dental cuticle (DC). b AAC " island" as seen with the electron microscope. The dental cuticle (DC) covers its surface and thickens between" islands. " The J E attaches to the dental cuticle by means of a basal lamina. The outlined area in b is enlarged in d. c AAC-"island" matrix showing irregular lamellation.
The Periodontium by Professor Dr. Hubert E. Schroeder (auth.)