. Elementary and dental radiography . Fig. 104. Pose for making radiograph of the antra of Highmore. The advantages of the small dental radiographs fldcantafles made on films held in the mouth over the large plate of film radiographs are: (i) There is no superimpositiorj Radiographs. of shadows, and therefore a clearer, better radio- graph can he made on the small film. (2) The patient may 1>< seated in the dental chair while the exposure is made when small films are used. (3) The time of exposure is shorter for the small films. (4) Small machines with which it is necessary to make an MA
. Elementary and dental radiography . Fig. 104. Pose for making radiograph of the antra of Highmore. The advantages of the small dental radiographs fldcantafles made on films held in the mouth over the large plate of film radiographs are: (i) There is no superimpositiorj Radiographs. of shadows, and therefore a clearer, better radio- graph can he made on the small film. (2) The patient may 1>< seated in the dental chair while the exposure is made when small films are used. (3) The time of exposure is shorter for the small films. (4) Small machines with which it is necessary to make an MAKING DliXTAL RADIOGRAPHS i5. Fig. 105. Radiograph made from the pose shown in Fig. 104. A, B, frontal sinuses. C, D, orbits. E, F, ethmoidal cells. F does not show as well as E because the cells of this side are full of pus. G, H, antra of Highmore. I. J. nasal cavity. As an aid in reading this radiograph observe Fig. 106. (Radiograph by A. M. Cole, of Indianapolis.) exposure of one minute or longer for large plate radiograph will makea good dental radiograph on a film held in the mouth in 10 to 30 seconds.(5) A compression diaphragm, though always a valuable appliance, isnot so essential when small films are used as it is when large plates areused. (6) The negative on celluloid cannot be broken. The great advantage of the large plates over the small films is thata larger field can be pictured. DENTAL RADIOGRAPH
Size: 1530px × 1633px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisheretcet, bookyear1913
