Manual of dental surgery and pathology . bone where it had been excised. Osseous Growths.—Those upon the alveolar surface are farfrom uncommon. Their most usual seat is upon the lower jaw,on its inner surface: here they somewhat interfere with thecomfortable adjustment of an artificial denture, and are thusbrought conspicuously under the notice of the practitioner, thepatient being in many cases quite unaware of their belief is that they correspond to splints as seen in the legsof horses—an effort of Nature to strengthen a part somewhatunduly taxed. The teeth of these subjects ar
Manual of dental surgery and pathology . bone where it had been excised. Osseous Growths.—Those upon the alveolar surface are farfrom uncommon. Their most usual seat is upon the lower jaw,on its inner surface: here they somewhat interfere with thecomfortable adjustment of an artificial denture, and are thusbrought conspicuously under the notice of the practitioner, thepatient being in many cases quite unaware of their belief is that they correspond to splints as seen in the legsof horses—an effort of Nature to strengthen a part somewhatunduly taxed. The teeth of these subjects are generally strong,and show evidences of having been well employed. The mostmarked cases that have come under our notice have been in indi- 378 MANUAL OF DENTAL SURGERY AND PATHOLOGY. viduals who lived largely on oatmeal. Tlie illustration given(Fig. 309) was taken from a cast of the mouth of an eminentphysician; and, although the prominent portions of bone pro-jected considerably under the tongue, they never gave rise to Fig. A case of considerable exostosis of the lower jaw. inconvenience. From their density of structure they would bedifficult to remove, as much so perhaps as the so-called ivory ex-ostoses of the cranium. Malignant growths occur in the regions that fall under theprovince of the dental surgeon, as well as in other parts of thebody. Their presence is no doubt sometimes determined by theirritation of diseased and broken teeth ; but, even when we bearin mind the amount of irritation which may be thus set up, itis very rare indeed to be able to assign this as a direct cause ofcancerous growth. It is only right that every dental surgeonshould be able to diagnose such tumors in the earliest stages oftheir existence, and in this he will hardly fail if he has paid dueattention to that surgical portion of his course of study whichrightly forms an important part of a dental curriculum. DENTIGEROUS CYSTS. 379 CHAPTEll XXI. DENTIGEROUS CYSTS. Under this designat
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