The pathology of dental caries / by C. Spence Bate.

  • Bate, C. Spence.
Date:
1864
Catalogue details

Licence: Public Domain Mark

Credit: The pathology of dental caries / by C. Spence Bate. Source: Wellcome Collection.

    27/100 (page 23)
    tissue appears more or less suddenly to have ceased to be developed, and its position occupied by one of less perfect construction. Into this tissue may occasionally be traced a continuation of one or more of the enamel columns in an im- poverished condition (Plate 8, Fig. 14), gradually passing from a highly calcareous structure, into one of a semi-membranous character, which un- doubtedly is the permanent feature of imperfect development (Plate 8, Fig. 15). Occasionally this is found to exist to so great an extent that the corresponding enamel can scarcely be said to be developed at all. 29. Glassification of Abnormally Developed Enamel.—The study of the more important de- partures from the normal condition of enamel may be arranged under the following heads :— 1st. Defect in the Organic Base— Want of lateral union in the enamel columns at their base. Imperfect development of secondary enamel columns. Feeble union of enamel columns near the surface. Presence of a semi-membranous tissue or cementum on the surface or in the crevices of enamel. 2nd. Defect in the Inorganic Base— Imperfect arrangement of salts within the sheath of the enamel columns.