. The Dental cosmos. ll-knownfigures, supposedly containing organictissue, seen in sections of the enamel,and especially to ascertain if these hadSLiij connection with a possibly existingmetabolism in that tissue. As these linesand figures have so frequently been described by various observers—for in-stance, by Bodecker, Williams, Morgen-stern, and Caush—we can here dispensewith a detailed description. (See Caush,Dental Cosmos, vol. xlvii; also Bod-ecker, Dental Cosmos September 1911.) For the attainment of our purpose,freshly extracted teeth were cemented inthe corks of bottles containing a s
. The Dental cosmos. ll-knownfigures, supposedly containing organictissue, seen in sections of the enamel,and especially to ascertain if these hadSLiij connection with a possibly existingmetabolism in that tissue. As these linesand figures have so frequently been described by various observers—for in-stance, by Bodecker, Williams, Morgen-stern, and Caush—we can here dispensewith a detailed description. (See Caush,Dental Cosmos, vol. xlvii; also Bod-ecker, Dental Cosmos September 1911.) For the attainment of our purpose,freshly extracted teeth were cemented inthe corks of bottles containing a strongalcoholic solution of fuchsin* in such a * To activate the capillary flow, commonsalt mav be added to the solution. 660 THE DENTAL COSMOS. manner that only the tip of the rootreached the fluid. After periods of timevarying, according to the character ofthe specimen under treatment, from afew hours to two weeks, it was observedthat the crowns had taken on a reddishhue. Slides ground from teeth treated Fig. Cross section of a central incisor. Subjectedto the process of staining first described,for a number of days. The stain has pene-trated the tuft-like processes originatingin the layer between dentin and enamel. in this manner showed that a direct com-munication by way of the above men-tioned canals was existing between thepulp and the very periphery of the crown, the surface of the enamel, includingin many cases the dental cuticle. It is not the purpose of this paper tocontribute to the histology of the illustrations shown* (Figs. 1 to 7), * These photographs were made from hardsections and have not been retouched. Duringthe grinding, paraffin oil was used as a lubri-cant. Balsam mounts. being exact reproductions of the photo-micrographs taken of the ground sections,are intended solely to illustrate the pur-port of the following statements: (1) The lines, or canals, seen byformer observers are channels through Fig. 2. Cross section of lower third mo
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentist, bookyear1912
