. Elementary and dental radiography / by Howard Riley Raper . Fig. 205 Fig. 206 Fig. 205. Loss of osseous tissue about a lower first molar due to pyorrhea. The distal root has no bone attachment at all and the mesial root an attachment only near the apex. The mesial root seems to be necrotic or carious, but it is not. (See Fig. 436C.) Fig. 206. The arrow points to bit of calculus on the distal of a second bicuspid. The lightarea above the calculus denotes the destruction of bone and represents a pyorrhea pocket. 204 with Fig. 207 in which latter case the osseous tissue in the cervicalregion is
. Elementary and dental radiography / by Howard Riley Raper . Fig. 205 Fig. 206 Fig. 205. Loss of osseous tissue about a lower first molar due to pyorrhea. The distal root has no bone attachment at all and the mesial root an attachment only near the apex. The mesial root seems to be necrotic or carious, but it is not. (See Fig. 436C.) Fig. 206. The arrow points to bit of calculus on the distal of a second bicuspid. The lightarea above the calculus denotes the destruction of bone and represents a pyorrhea pocket. 204 with Fig. 207 in which latter case the osseous tissue in the cervicalregion is healthy. In this connection it should be borne in mind that the extremelysharp points of alveolar process between the teeth, which can be seenclearly in Fig. 207 about the lateral incisor, are lost with age. Thuscare should be taken not to confuse age changes with the disease pyor-rhea alveolaris. A lower first molar affected with 205. The distal root is entirely denuded of pericemental membrane and bone and the mesial root also, savejust at
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