. Dental and oral radiography : a textbook for students and practitioners of dentistry . radiograms must understand enough of the funda-mental rides of radiographic technic to know when ex-amining a radiogram, whether or not the technic in-volved in its making ivas correct or faulty, and if faulty,whether or not the degree of fault is sufficient to renderit so inaccurate as to be useless. L24 DENTAL AM) ORAL RADIOGRAPHY Iii correctly made radiograms, the denial and oralstructures under normal conditions have a characteristicappearance, for, owing to the varying densities of thecontained struct


. Dental and oral radiography : a textbook for students and practitioners of dentistry . radiograms must understand enough of the funda-mental rides of radiographic technic to know when ex-amining a radiogram, whether or not the technic in-volved in its making ivas correct or faulty, and if faulty,whether or not the degree of fault is sufficient to renderit so inaccurate as to be useless. L24 DENTAL AM) ORAL RADIOGRAPHY Iii correctly made radiograms, the denial and oralstructures under normal conditions have a characteristicappearance, for, owing to the varying densities of thecontained structures in our field, they appear upon theplate or film in a manner mosl advantageous for obser-vation. For instance, it will be noted upon the examina-tion of such a radiogram, that metallic fillings, if theyare present, appear as white masses, and root fillings assomewhat less dense lines. The enamel and dentin arenext in density, while root canals show plainly as darkchannels in the dentin, and the alveolar process and max-illae show their line uniform cancellous structures in vari-.


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