. Elementary and dental radiography / by Howard Riley Raper . 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. I
. Elementary and dental radiography / by Howard Riley Raper . 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 upperthe first molars are easily distinguished, but there are no evidences of the secondand third molars. In the mandible the third molars are absent, but the other fourmolars are present, though in one case the crown has been lost by caries. Con-sidering the boys age. this seems to be an authentic record of congenital absenceof two second upper molars, and of all four third molars, as the extraction of anyof these teeth could not have been Fig. C. Patients ace 13. Right side. Missing teeth: Upper bicuspids, second and third molars,first bicuspid and third molar. Lower Dr. Hyat has kindly asked another patient of his to missing Tirst, call at my office that I might examine a very similar case. Second and In this instance the patient is a woman about thirty-five third molars. years of age. She is a highly cultured person engaged in the editorial department of one of our leading magazines. She is quite positive that the only tooth she ever had extracted was one lower first molar. If this be true she has fourteen teeth congenitally absent as follows: In the upper jaw the missing teeth are the two lateral incisors, the first, second and third molars on the left side, and the second and third molars on the right side. In the lower jaw the missing teeth are the second bicuspid and all three THE USES OF THE RADIOGRAPH IN DENTISTRY 155 Fig. i1 representative of a
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