. Elementary and dental radiography / by Howard Riley Raper . s willoften be found of great value to the operator. This is particularly truein cases where the shape or size of the roots is unusual. At any time during the process of opening canals the operator mayinsert wires and make a radiograph to see how far he has penetrated. THE USES Of THE RADIOGRAPH IN DENTISTRY 177 Fig. 171 is the first radiograph made of the particular case it illustrates,and shows the wires (in this case old broaches) reaching the ends of thecanals. A wire with a flat end does not enter canals readily. Engage thewire
. Elementary and dental radiography / by Howard Riley Raper . s willoften be found of great value to the operator. This is particularly truein cases where the shape or size of the roots is unusual. At any time during the process of opening canals the operator mayinsert wires and make a radiograph to see how far he has penetrated. THE USES Of THE RADIOGRAPH IN DENTISTRY 177 Fig. 171 is the first radiograph made of the particular case it illustrates,and shows the wires (in this case old broaches) reaching the ends of thecanals. A wire with a flat end does not enter canals readily. Engage thewire—orthodontia ligature wire for example—in the broach holder, forthe dental engine suggested by Dr. Gallie, hold the end of the wirewith emery cloth between the thumb and finger, and revolve the this way the wire may be pointed and reduced to any desired size. It is not always a physical possibility to reach the ends of the canalsin molar teeth. It is very often necessary to devote from five to tenhours on a molar to open its canals to the
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