. Interpretation of dental and maxillary roentgenograms . The emulsion sideof the film is always placed against the teeth to be of these routine positions must, of course,be made to suit individual cases. Where symptoms sug-gest the possibility of disease of the nasal accessorysinuses, or where it is suspected that dental infection in-volves the maxillary sinus, roentgenographic examina-tion of these parts is often of value. This is carried outby using the technic described by Waters and Waldron(American Journal of Roenfgenologi/, February, 1915), 00 II^TERPEETATIOiSr OF RO
. Interpretation of dental and maxillary roentgenograms . The emulsion sideof the film is always placed against the teeth to be of these routine positions must, of course,be made to suit individual cases. Where symptoms sug-gest the possibility of disease of the nasal accessorysinuses, or where it is suspected that dental infection in-volves the maxillary sinus, roentgenographic examina-tion of these parts is often of value. This is carried outby using the technic described by Waters and Waldron(American Journal of Roenfgenologi/, February, 1915), 00 II^TERPEETATIOiSr OF ROENTGEjSTOGEAMS for which this stand is well adapted. An 8x10 inchplate is used, at 22 inches from the target. The patient isseated directly in front of the stand,—if a woman, withall hairpins removed—and the head placed on the ]3laterest with the chin touching the plate and the nose notquite touching. The tube holder is tipped until the baseof the funnel is parallel with the plate, and the focal raydirected toward the root of the nose. (Fig. 26.) By. Fig. 25.—Position for exposing intraoral dental films. means of a plate of this kind the two sides of the face canbe compared and empyema of the antrum of Highmoreor of the other sinuses detected by increased opacity tothe rays as compared with the healthy side. It is seldompossible from a plate or film showing conditions only onone side to detect the presence of pus in the antrum, butby the addition of the sinus plate just described, the diag-nosis may often be completed. Fig. 27 shows opacity of COREELATIOiSr OF CLIjSTICAL FINDINGS 59 tlie left maxillary sinus, due to empyema. Still furtherinformation may be obtained when necessary by making-lateral or vertical views of the sinuses. Identification of Given Plates and Films with the Sidesand Parts of the Mouth to Which They Belong Provided that plates and films have been made ac-cording to the technic described, how is one who has not
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectradiographydental
