. Interpretation of dental and maxillary roentgenograms . 111 bt molai 1 1 -^t molai Fig. S.—Showing floor of maxillary sinus dipping down between roots of molar tooth,the apices thus being above the level of the floor. (Cryer.) Infraorbital sinus Infraorbital foramen d passing throughinfraorbitalcanal and Maxillary sinus. Opening caused by apicalabscess. Fig. 6.—In this specimen the maxillary sinus does not extend much anterior to thefirst molar. (Cryer.) ANATOMY OF THE TEETH AITD JAWS 29 teeth (Fig. 6), but ma}^ extend as far forward as thefirst premolar or canine (Fig. 7). These v

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. Interpretation of dental and maxillary roentgenograms . 111 bt molai 1 1 -^t molai Fig. S.—Showing floor of maxillary sinus dipping down between roots of molar tooth,the apices thus being above the level of the floor. (Cryer.) Infraorbital sinus Infraorbital foramen d passing throughinfraorbitalcanal and Maxillary sinus. Opening caused by apicalabscess. Fig. 6.—In this specimen the maxillary sinus does not extend much anterior to thefirst molar. (Cryer.) ANATOMY OF THE TEETH AITD JAWS 29 teeth (Fig. 6), but ma}^ extend as far forward as thefirst premolar or canine (Fig. 7). These varying rela-tions of the floor of the antrum of Highmore to the rootsof the teeth are well shown in x-ray negatives, the cavityof the antrum appearing as a dark shadow wliicli must

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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectradiographydental