. Elementary and dental radiography / by Howard Riley Raper . 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
. Elementary and dental radiography / by Howard Riley Raper . 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 class of delayed eruption that is mostcommon. I could print hundreds of radiographs of such cases. was a beautiful example. The age of the patient in this particularcase (Fig. 134) was some months over fourteen. The radiograph wasmade for an orthodontist who was just beginning treatment of the was no evidence of the presence of the cuspid and no room forit to erupt. When the arch was broadened and space made for it the. Fig. D. Same patient as for Fig. C, left side. Missing teeth: Upper second bicuspid, second and thirdmolars. Lower second bicuspid and third The root, only of the lower first mo!:r remain. cuspid erupted. It required some mechanical guidance to make it its exactly proper position. molars on the right side, and both bicuspids and the third molar on the left sideAgain we have the upper laterals missing, and the upper cuspids present. In this mouth we have the strange anomaly of three molars missing fromthe upper jaw on the right side, and three molars missing from the lower jaw onthe left side. Enumerated in full the absent molars were all four of the thirdmolars, three of the second molars and two of the first molars. 156 DENTAL RADIOGRAPHY The mere making of space for them in the arch will usually resultin the eruption of unerupted teeth, unless they are malposed. If, afterspace is made, the tooth does no
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