. Elementary and dental radiography / by Howard Riley Raper . n consequence, and in contact fromthe incisal edge to beneath the gum margin. Second and third molars are sometimes fused together. I recall hav-ing extracted the upper second and third molars in an effort to removethe third, the roots of the two teeth having been coalesced. Had I usedradiographs, and known the condition which existed, I might have con-served the third molar, and so saved the second molar, which latter wasa useful tooth. Or. had it been necessary to remove the teeth, I mighthave saved my patient considerable pain by
. Elementary and dental radiography / by Howard Riley Raper . n consequence, and in contact fromthe incisal edge to beneath the gum margin. Second and third molars are sometimes fused together. I recall hav-ing extracted the upper second and third molars in an effort to removethe third, the roots of the two teeth having been coalesced. Had I usedradiographs, and known the condition which existed, I might have con-served the third molar, and so saved the second molar, which latter wasa useful tooth. Or. had it been necessary to remove the teeth, I mighthave saved my patient considerable pain by a more inclusive use of mylocal anesthetic. THE USES OF THE RADIOGRAPH 231 46. Co Observe the Location and €xtent of a necrotic or Cariotu Condition of Bone. This radiograph is of a case of arsenical necrosis, Tig. 266. which would not yield to the usual treatment of curettement and drug stimulation. The arrow points to the line of demarcation, below which can be seen the sequestrum. The case recovered promptly upon removal of the Fig. 266. The arrow points to the line of demarcation, beneath which can be seen the sequestrum. Case: Necrosis of the lower jaw, caused by anTiflS. 267 and 268. abscessed tooth. The patient suffered for a yearfrom recurrence of an abscess in the lower jaw. Dur-ing this time he made several changes from one dentist or physician toanother. At the time the case came under the care of Dr. Gilmer, ofChicago, the symptoms were alarming. There were two external pussinuses along the lower border of the mandible in the bicuspid patient had been unable to lie clown for a period of ten days becauseof the intense pain which resulted from assuming a recumbent body temperature rose and fell by turns. Stupor and coma radiograph of the case (Fig. 267) shows a sequestrum about thesize of the first joint of the thumb along the lower border of the mandiblein the bicuspid and cuspid region. The line of demar
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