. Elementary and dental radiography / by Howard Riley Raper . Fig. 451A. The arrows point to a shadow which has the appearance of a tooth just startingto form in the antrum. The shadow is caused by the dense bone along the lower border of the malar bone. this time leads him to believe that some cannot, which would seem toindicate that they are not permanent. Gutta-percha is a permanent canal filling which is always radio-graphically visible. Cotton with iodoform on it can be observed radiographically incanals. Paraffin, as a canal filling, unmixed with anything else, can not beradiographed suc


. Elementary and dental radiography / by Howard Riley Raper . Fig. 451A. The arrows point to a shadow which has the appearance of a tooth just startingto form in the antrum. The shadow is caused by the dense bone along the lower border of the malar bone. this time leads him to believe that some cannot, which would seem toindicate that they are not permanent. Gutta-percha is a permanent canal filling which is always radio-graphically visible. Cotton with iodoform on it can be observed radiographically incanals. Paraffin, as a canal filling, unmixed with anything else, can not beradiographed successfully. READING RADIOGRAPHS 403 :011s cement is more penetrable to the X-raysTionrFlao lnan oxyphosphate of zinc, colorless copper or black 5 :e Fig. 450.) The filling on theextreme right is silicious Fig. 452. Case of suspected frontal sinus or antral empyema. An abscessed upper lateral or located. 4Q4 APPENDIX To demonstrate the skill one may acquire from read-Cases from Practice. mS a great number of radiographs, observe Figure 451. It is highly improbable that one not familiarwith head radiographs will be able to observe anything of significance


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