. Interpretation of dental and maxillary roentgenograms . Fig. 9.—Showing cancellated internal stiaicture of mandible with mental foramen be-low and lietween roots of premolar teeth. (Cryer.) shadow in the wall of the antrum in close relation to thepalatal roots of the molar teeth. Lower Jaw Here the iDrincipal roentgenograiDhic anatomic land-marks are the mandibular canal and the mental foramen(Fig. 9). The mandibular canal runs posteroanteriorlybelow the apices of the teeth, and sometimes in very closerelationshix) with them. (Fig. 10.) In the roentgeno-gram the root of a lower molar may app
. Interpretation of dental and maxillary roentgenograms . Fig. 9.—Showing cancellated internal stiaicture of mandible with mental foramen be-low and lietween roots of premolar teeth. (Cryer.) shadow in the wall of the antrum in close relation to thepalatal roots of the molar teeth. Lower Jaw Here the iDrincipal roentgenograiDhic anatomic land-marks are the mandibular canal and the mental foramen(Fig. 9). The mandibular canal runs posteroanteriorlybelow the apices of the teeth, and sometimes in very closerelationshix) with them. (Fig. 10.) In the roentgeno-gram the root of a lower molar may apparently projectinto the dark space representing tlie canal, yet in realitybe situated to one side or the other. 32 IlvFTERPEETATION OF EOENTGENOGRAMS The mental foramen, situated below and between thelower premolar teeth, may easily be mistaken for anarea of disease associated with one of these teeth, par-. Fig. 10.—Plate of right side of face, with head placed especially to show molarregion. Horizontal impaction of lower third molar. (See Fig. 11.) Mandibularcanal seen below this tooth. ticularly if there are clinical signs giving a suspicion oftrouble (Fig. 176, p. 113). Very frequently, however,the connection of the mental foramen with the inferiordental canal can easily be seen in the roentgenogram(Fig. 182, p. 115).In hlms of the upper premolar and molar region the ANATOMY OF THE TEETH AXD JAWS 66 overhanging malar bone frequently casts a shadow whichobscures the roots of these teeth (Figs. 127 and 128,p. 101).
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectradiographydental
