. Elementary and dental radiography . Fig. 168. Fig. 169. Fig. 170. Fig. 1G8. A wire passing through a large apical foramen in an upper, central incisor, extendingseveral millimeters into the tissues above the apex of the root. Fig. 1G9. The same case as Fig. 168, after the wire has been removed, a part of it cut offand reinserted into the canal. The wire reaches just to the apical foramen. Fig. 170. The same case as Figs. 168 and 169, showing a canal filling of gutta-percha closingthe apical foramen, not through it, and not leaving a little of the canal unfilledat the apex of the
. Elementary and dental radiography . Fig. 168. Fig. 169. Fig. 170. Fig. 1G8. A wire passing through a large apical foramen in an upper, central incisor, extendingseveral millimeters into the tissues above the apex of the root. Fig. 1G9. The same case as Fig. 168, after the wire has been removed, a part of it cut offand reinserted into the canal. The wire reaches just to the apical foramen. Fig. 170. The same case as Figs. 168 and 169, showing a canal filling of gutta-percha closingthe apical foramen, not through it, and not leaving a little of the canal unfilledat the apex of the root. The entire canal is not filled, because there is to be a post set in it. Next the shortened wire was reinserted and an- Tlfl. Ib^. other radiograph (Fig. 169) made. This shows that my judgment in cutting off the wire in this particular case was unusually good. The wire reaches just to the apex. It may be necessary to make two or three trials before the wire is placed just to the apex. With the length of the wire as a guide to
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