. Diseases of the dog and their treatment. d a necrotic condi-tion of the tooth causes it to become yellow; this is generally termed falsecaries of the teeth. Alveolar periostitis commences with the formationof an abscess at the root of the tooth, and the pus formed finds its way tothe outside of the gums through the alveolar process. It forms a fluc-tuating swelling on the gums (abscess of the gums); the opening gener-ally remains so, and if it is in the superior maxillary open fistuloustracts may form under the eye just below the lower eyelid, and unlesscarefully examined may be mistaken for
. Diseases of the dog and their treatment. d a necrotic condi-tion of the tooth causes it to become yellow; this is generally termed falsecaries of the teeth. Alveolar periostitis commences with the formationof an abscess at the root of the tooth, and the pus formed finds its way tothe outside of the gums through the alveolar process. It forms a fluc-tuating swelling on the gums (abscess of the gums); the opening gener-ally remains so, and if it is in the superior maxillary open fistuloustracts may form under the eye just below the lower eyelid, and unlesscarefully examined may be mistaken for a lachrymal fistula. By meansof a flexible probe the diagnosis can be made with certainty. In all these cases the animals seem to have a more or less severetoothache; they are irritable, eat very slowly and irregularly, drop moreor less saliva, refuse to have the mouth examined, and, if the affectedtooth is struck with something (a key is the best), howl and evince greatpain, keeping the mouth open for some time afterward. When the mouth. Fig. 19.—Improvised gag (French). is examined, the gums are swollen and painful, and there is a very foetidunpleasant odor from the mouth. When there is more or less pus present, the radical treatment isto remove the offending tooth. For this purpose open the mouth bymeans of the method described on page 12, using the mouth speculum(Figs. 4, 5 and 6), or Fig. 19, which shows a mouth ga^ that is partic-ularly useful where the incisor or canine teeth are to be examined as itcan be easily improvised and allows the mouth to be examined and atthe same time the animal does not open the mouth and move around thetongue and interfere with the examination and an assistant can hold thehead steady and with an ordinary molar-forceps extract the tooth, beingcareful to avoid breaking the crown. The tooth is seized with the for-ceps as far down on the root as possible; it is first loosened by twistingit several times from side to side and then drawn out wi
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