. Interpretation of dental and maxillary roentgenograms . 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
. Interpretation of dental and maxillary roentgenograms . 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. Fig. 26.—Diagram showing position for exposing sinus plate, and projection oftlie sinuses on the plate. witnessed the examination to determine which teeth aredepicted in a given plate or film? Plates.—In exposing a plate, it is recalled that theside of the face to be slioAvn is laid against the emulsion 60 IjSTTEEPPvETATIOX of EOENTGEiSrOGPiAMS surface and the rays directed from the opposite side of thehead. Therefore, a finished plate of the riglit side, withthe emulsion surface toward the observer, should looktoward the left, while a plate of the Jeff side should looktoward the right. Films.—In making a film, it is placed in the mouthwith the emulsion surface toward the inner or lingualaspect of the teeth, and the rays directed from the sameside of the head. A finished film should be viewed with
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectradiographydental
