. Elementary and dental radiography / by Howard Riley Raper . Fig. 166. Fig. 167. Fi?. 106. Upper first (?) molar with but one canal which is filled. Fig. 167. The dark streak in the first bicuspid is a wire passing into the canal. This tooth has another canal, which can be seen as a light streak distally to the wire. The more or less oval dark spot at the neck of the first bicuspid is a buccal cervical filling. The cavity in the crown of the tooth is stopped up with gutta-percha. Let me say here that a lower bicuspid, or cuspid with two canals, isnot such an unusual occurrence, as it is gener
. Elementary and dental radiography / by Howard Riley Raper . Fig. 166. Fig. 167. Fi?. 106. Upper first (?) molar with but one canal which is filled. Fig. 167. The dark streak in the first bicuspid is a wire passing into the canal. This tooth has another canal, which can be seen as a light streak distally to the wire. The more or less oval dark spot at the neck of the first bicuspid is a buccal cervical filling. The cavity in the crown of the tooth is stopped up with gutta-percha. Let me say here that a lower bicuspid, or cuspid with two canals, isnot such an unusual occurrence, as it is generally believed to be. Menhave shown me such teeth, and spoken of them as though they were rareanomalies. As a teacher of operative technic, I devote a part of my timeto the dissection of teeth. In this work I handle thousands of disasso-ciated human teeth. In my work of last year, for example, I estimatethat I observed six to eight thousand teeth. And among these I noticednot less than seven lower cuspids and five lower bicuspids with twocanals each. Without
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