. Elementary and dental radiography / by Howard Riley Raper . irst molar,there was a well-defined composite odontoma. And perhaps even more astonishingis the position of the molar lying distally of the tumor. Whether this tooth, whichis seen lying horizontally in the bone, is the first molar or the second molar, is aquestion that has been raised by an orthodontist of national reputation, a man of THE USES OF THE RADIOGRAPH IN DENTISTRY 153 keen judgment and well informed as to tooth forms. While I am willing to admitthat this looks more like a first than a second molar, especially when we comp
. Elementary and dental radiography / by Howard Riley Raper . irst molar,there was a well-defined composite odontoma. And perhaps even more astonishingis the position of the molar lying distally of the tumor. Whether this tooth, whichis seen lying horizontally in the bone, is the first molar or the second molar, is aquestion that has been raised by an orthodontist of national reputation, a man of THE USES OF THE RADIOGRAPH IN DENTISTRY 153 keen judgment and well informed as to tooth forms. While I am willing to admitthat this looks more like a first than a second molar, especially when we comparewith the normal side (Fig. B), still I very much doubt that it is the first odontoma is more apt to be a composite of the bicuspid and first molar. Butin any event, interesting as this case is, it cannot be entered in the literature as arecord of congenital absence of a first permanent molar, because that tooth iseither in the bone or else is included in the odontoma, whereas by congenitalabsence I understand to be meant complete Fig. B. Same patient as for Fig. A, opposite side, conditions normal. (Radiograph by Schamberg, of New York City.) UlisssingSecond molars. The second case which I am permitted to report isfrom the practice of Dr. Thaddeus P. Hyat, and is in thehands also of Dr. George B. Palmer for orthodontic treat-ment. The patient is a boy of fourteen, and we are assuredthat no permanent teeth have been extracted, yet no less than thirteen permanentteeth are missing. In the upper jaw the absent teeth are: both lateral incisors,three bicuspids, both second molars and both third molars, a total of nine teeth(note that both upper laterals are absent, while both upper cuspids are present).Tn the lower jaw the following teeth are absent: the first bicuspid and the thirdmolar on the right side and the second bicuspid and the third molar on the left side. 154 DENTAL RADIOGRAPHY Figs. C and D are radiographs of the two sides of the head. In the
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