. Elementary and dental radiography / by Howard Riley Raper . the film in the mouth for pose and radiograph seen in Fig. 96. in Fig. 95. A radiograph made in this way is liable to considerable dis-tortion. The radiograph in Fig. 96 was made when radiographers pre-pared their own film packets, cutting a film of the desired size from alarge film and wrapping it in black paper. I quote from the first editionof this book: After making a radiograph as shown in Fig. 96, it maybe trimmed to a more symmetrical form. In other words, the film, aswrapped up in a film packet may be left an indefinite, uns
. Elementary and dental radiography / by Howard Riley Raper . the film in the mouth for pose and radiograph seen in Fig. 96. in Fig. 95. A radiograph made in this way is liable to considerable dis-tortion. The radiograph in Fig. 96 was made when radiographers pre-pared their own film packets, cutting a film of the desired size from alarge film and wrapping it in black paper. I quote from the first editionof this book: After making a radiograph as shown in Fig. 96, it maybe trimmed to a more symmetrical form. In other words, the film, aswrapped up in a film packet may be left an indefinite, unsymmetricalform and trimmed to a more pleasing outline after the radiograph ismade. _ .... With the film placed in the mouth as shown in Poses for the Cower ~ M ., f , , . ,. , Posterior teeth. g> 9 e correct Pose for making radiographs of the lower molar region is illustrated in Fig. that the rays are directed at the teeth and film at right angles. Ifthe radiograph resulting from this pose does not show the apices of the io6 DENTAL RADIOGRAPHY. Fig. 9G. The pose with the film in the mouth as in Fig. 9» and the radiograph made from this pose. teeth, press the film down farther if possible. If this cannot be done thetube must be tipped, slanting the rays upward, something like the rays areslanted downward for the upper teeth, or the head may be tipped side-ways from the tube which accomplishes the same thing. With the film placed in the mouth as shown in Fig. 99 the pose formaking radiographs of the lower cuspids and bicuspids is illustrated inFig. 100. Note that the rays are directed dwfo-lingually and slightly upward. MAKING DENTAL RADIOGRAPHS 107 Figure 101 shows the film packet placed in posi-Poses for the Cower tion for ra(iiographing the lower anterior that about ten millimeters of the packet is bentabruptly backward. This is done because the packet is too wide for thedental arch and it is better to bend back a part of the film abruptly, andso allow t
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