Caries of the teeth is an extremely common affection, and in some instances seems to arise from an unhealthy state of the constitution; but it is most frequently produced by the teeth having suffered from chemical agents, as when the mineral acids have been taken for a considerable time as medicines, or when the individual is in the habit of consuming sweetmeats, and confections. Sometimes the disease remains almost stationary, and may give little or no annoyance for a number of years; in other instances, its progress is very rapid. A portion of the tooth gradually decays, and this is at first unattended with any uneasy sensation; but when, from continuance of the destructive process, the central cavity has been exposed, the pain is excruciating, attended with headache, and swelling of the surrounding soft parts. In general, the progress of the disease may be arrested by removing the diseased portion, and stuffing the cavity, before any pain has been felt. But after the central cavity of the tooth has been exposed, filled with fungous mass, as here seen, or from their growing in a faulty direction, and pain consequently experienced, the most effectual remedy is extraction. The patient from whom the specimen below was obtained, perished in consequence of the extensive abscesses of the mouth and neck, consequent upon the awkward position of the wisdom tooth.
From the presence of carious teeth, or decayed portions of teeth, many evils both local and general ensue, besides inflammation and abscess. They are frequently the cause—and the sole cause—of violent and continued headaches; of glandular swellings in the neck, terminating in, or combined with abscess; of inflammation and enlargement of the tonsils, either chronic or acute; of ulcerations of the tongue or lips, often assuming a malignant action from continued irritation; of painful feelings in the face, tic doloureux, pains in the tongue, jaws, &c.; of disordered stomach, from affection of the nerves, or from imperfect mastication; and of continued constitutional irritation, which may give rise to serious diseases.
Along with abscess of the gums, purulent matter often collects in the cellular tissue of the cheek or of the chin. In the latter situation, the inflammation and suppuration are often caused by the teeth in the front or side of the lower jaw being too much crowded together. When the teeth are crowded together, the patient, of course, cannot be effectually benefited till one or more of them are extracted, and sufficient space allowed for development of the others. The abscess gives way, and discharges its contents often both externally and internally, and a fistula remains, which cannot be got rid of, unless, as in most other affections, the cause be removed. The cavity of the abscess must be opened into either from without or within, and after the subsequent irritation has subsided, the cause must be removed; carious teeth or stumps are not to be taken away during the inflamed state of the parts, but after the pain and inflammation has subsided in consequence of free evacuation of the purulent matter. After these have abated, and not till then, the offending bodies are to be extracted, both in order to procure a more speedy and effectual cure, and with a view to prevent recurrence of the disease. If a portion of the jaw has become necrosed, the sequestra are to be extracted as they become loose, and openings and counter-openings must be made, according to circumstances, so as to afford a free outlet to the matter.
THE EXTRACTION OF TEETH
The extraction of teeth, the crowns of which have not been destroyed, is accomplished most readily by the dexterous use of variously shaped forceps. Stumps may be occasionally extracted also by forceps, but the lever is generally required to loosen them from their sockets. The old key instrument and pelicans are now superseded by those above mentioned.[37]
Spina Ventosa of the Jaw often originates, as before mentioned, in a small cyst at the root of a decayed or dead tooth. An enormously large one extracted along with the stump attached is here shown: it is sketched from a specimen in the collection of Mr. Nasmyth, of Edinburgh.
The disease is usually situated on one side of the lower jaw; but sometimes occurs in the upper, and is at first unconnected with the cavity of the antrum. Inflammation has taken place in the internal structure of the bone; matter is secreted by the medullary vessels, and collects in the cancellated texture. Purulent formation advances, the cancelli are broken down, the external laminæ of the jaw are extended, protruded, and attenuated; and then the internal cavity enlarges, containing pus, perhaps mixed with other fluids, and with disorganised particles of bone. Sometimes the collection proceeds slowly, and the expansion of the bone is gradual and uniform; in other instances, the swelling rapidly attains a large size. As the disease advances, the bony parietes become remarkably thin and delicate, particularly at the more prominent parts of the tumour; and at many points bone is deficient, and its place supplied by membranous expansion. Occasionally alteration of structure takes place in the cyst; solid matter is added, either bony or fibro-cartilaginous, and morbid action proceeds in the new deposit. In acute cases, in which the secretion and distension are rapid, severe pain is felt in the part at the first, and usually continues but little unabated; when the swelling is slow and gradual, considerable pain is experienced during the inflammatory stage, but soon diminishes, or ceases entirely. In every instance, the features are deformed, and the functions of the mouth more or less impeded.