The principles and practice of dentistry : including anatomy, physiology, pathology, therapeutics, dental surgery and mechanism / by Chapin A. Harris.

  • Harris, Chapin A. (Chapin Aaron), 1806-1860.
Date:
1882
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Licence: Public Domain Mark

Credit: The principles and practice of dentistry : including anatomy, physiology, pathology, therapeutics, dental surgery and mechanism / by Chapin A. Harris. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    lieves it passes into the cavities of the teeth, forming their lining mem- brane, and is continuous with, or the same as that of the pulp. The original sac has been stated in another place to consist of two membranes, an outer and an inner; these are attached to the gums, and when the teeth come through these membranes and tlie gums, the sac remaining ])chind, especially its outer coat, is supposed by some to constitute the alveolo-dental periosteum, and to be continuous with the gums; while, on the other hand, Mr. Bell believes both membranes of the sac to be wholly absorbed, and that the true alveolo-dental peri- osteum is the same as the periosteum covering the upper and lower maxillary bones, continuing into the alveolar cavities, lining their parietes, and thence being reflected on the roots of the teeth. It matters little whether this membrane be a continuation of the gums, the remains of the pulp-sac, or the extension of the periosteum of the maxillary bones into the alveolar cavities, since the great practical truth still remains, that there is a membrane lining the alveolar cavities and investing the roots of the teeth, and that this membrane is fibrous, and constitutes the bond of union between the alveolar cavities and the roots of the teeth. The Dental Ligament, so recently discovered by a dentist, formerly of Virginia, but now of Philadelphia, is attached to the necks of the teeth, and whose opinion, I am sorry to add, has the support of Dr. Goddard, bears no more resemblance to true ligament than the nails do to bone. It consists of the fibres that unite the alveolar to the dental periosteum, which, according to the last-named gentleman, are very numerous just at the margin of the alveolus; but it can lay no reasonable claim to the title of ligament. ANATOMICAL RELATIONS OF THE MOUTH. The mouth has many interesting anatomical relations with the rest of the body, a few of which it may be well to mention. By means of its lining mucous membrane it is connected through continuity of structure with the pharynx, oesophagus, stomach, and the whole of the intestinal canal, etc. Disease still further establishes this structural relation. Inflamma- tion, ulceration, or any other pathological change in the stomach or intestines is felt and reported on the tongue, gums, and other parts of the mouth, showing the sympathy and the close relationship of these several parts. The mouth is also connected by the same mucous membrane with the organs of respiration by being continued down into the larynx, trachea, and bronchi.