. Elementary and dental radiography . Fig- Fig. 247. Fig. 246. Cementoma on lower, second, shell-crowned molar. (Radiograph by Ream, of Chicago.)Fig. 247. Cementoma. (Radiograph by Ream, of Chicago.) first, then the third molar. This was done, and the neuralgia disappearedfor about ten days, then pain returned. Another radiograph (Fig. 249)was made which shows a bone whorl in the region from which the secondmolar had been removed. Another operation was done removing thewhorl, after which the neuralgia disappeared altogether. 2l6 DENTAL RADIOGRAPHY. Fig. 248. An unerupted lower third mola
. Elementary and dental radiography . Fig- Fig. 247. Fig. 246. Cementoma on lower, second, shell-crowned molar. (Radiograph by Ream, of Chicago.)Fig. 247. Cementoma. (Radiograph by Ream, of Chicago.) first, then the third molar. This was done, and the neuralgia disappearedfor about ten days, then pain returned. Another radiograph (Fig. 249)was made which shows a bone whorl in the region from which the secondmolar had been removed. Another operation was done removing thewhorl, after which the neuralgia disappeared altogether. 2l6 DENTAL RADIOGRAPHY. Fig. 248. An unerupted lower third molar. The arrow points to a bone whorl. (Radiograph by Pancoast, of Philadelphia.) Case in the practice of Dr. Robert H. Ivy, offjg. 250. Philadelphia. The patient had suffered from neu- ralgia of the mandibular division of the fifth nerveon the right side, for two years. In February, 1911, she was treated byan alcohol injection of thi> division, which gave relief from pain for sixmonths, after which the trouble returned, but not so severely as January, 1912, a skiagram was made, showing a dense spot in then of the first molar tooth, and in close relation to the inferior dentalnerve. This is so dense as to appear like a piece of tooth root, but whencut down upon with the surgical engine, nothing but dense bone wasfound. The patient has been without neuralgia since the operation, thoughit is too soon yel to say whether the relief will be permanent. THE USES OF THE RADIOGRAPH IX DENTISTRY 217
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