Licence: In copyright
Credit: A work on operative dentistry .. / By G.V. Black. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![Sepsin. a soluble poison (ptomain) present in putrid blood, flesh, or in proteid compounds. Sepsis. Poisoning of the system by the introduction of sepsin into the blood. Septic. Pertaining to poisonous matter produced by microorganisms; espe- cially in connection with persistent pus formation. Septum. (PI. Septa.) A partition; that portion of the alveolar process which lies between the roots of the teeth separating their alveoli. See Gum Septums. Seetjmal. Pertaining to the serum of the blood. Derived from serum. Serumal calculus: Calculus on the roots of teeth derived from the blood. Sets of line angles. First set: The line angles formed by the junction of the surrounding walls of cavities with each other; as, buceo-distal angle, Unguo-gingival angle. See Figure 4, Vol. 2. Second set: The line angles formed by the junction of the surrounding walls of a cavity with (a) the pulpal wall in occlusal cavities; as pulpo-buccal angle; (b) the axial waU in axial cavities; as, axio-buccal angle, in a mesial or a distal cavity. Side instruments. Such instruments as may be introduced into any regular set, but which do not follow the regular order of the nomenclature of the other instru- ments in the set. Sinus. [L.] An opening; a hollow; a bending. An abnormal opening from an abnornaal cavity to the surface, for the discharge of an abnormal secretion. See note following definition of fistula. '' In pathology, a narrow passage leading to an abscess or other diseased locality; a fistula. Century Dictionary. (Surgery.) A long, narrow, hollow tract leading from some abscess, etc. Dun- glison.'' Worcester. (Medical.) A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice. Webster. (Surgery.) Any long, narrow opening leading to an abscess or to a diseased structure. Standard Dictionary. '' A long, narrow pathological canal communicating with an abscess or a diseased tract.'' Foster's Medical Dictionary. '' An abnormal pathway or canal, usually the result of ulceration.'' Gould. Pathologically, sinus means a narrow tract of variable length, leading from a chronic abscess to a free surface.'' Quain. Smooth-sukpace cavity, a cavity formed by caries beginning in any smooth surface of a tooth, or portion of a surface free from pits or fissures. The term is confined to cavities beginning in the axial surfaces of the teeth. Specials, as applied to cutting instruments. Such instruments as are designed for doing special things in the preparation of cavities, as enamel hatchets, spoons, etc. Split teeth. Teeth sawed through and the cut surfaces polished for showing the penetration of caries of enamel and dentin. Sprue. A piece of wood or metal used by a molder in casting metals, to form the ingate for the molten metal; used to form the passage or ingate for making an inlay of cast metal, gold, etc. Invested as attached to the wax model of an inlay and drawn out when the investment is set. Sterile. Not containing microorganisms; aseptic. Sterilization. The process of freeing a substance from microorganisms and their spores. Sterilize. To thoroughly cleanse; to make an instrument or the hands and nails and tissues aseptic. To remove absolutely or destroy the life of all microorganisms and their spores; to make the hands and instruments surgically clean. Stomatitis. Inflammation of the mucous membranes of the mouth.](https://iiif.wellcomecollection.org/image/b21506462_0570.jp2/full/800%2C/0/default.jpg)
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