. Elementary and dental radiography / by Howard Riley Raper . Fig. 146. Radiograph made to show relation of temporary molar roots to advancing bicuspids.(Collection of Dr. Cryer. Radiograph by Pancoast, of Philadelphia.) 7. Co Observe moping Ceetb. Fig. 147 demonstrates the congenital absence of Tig*. 147, 14$ and 149. the upper lateral incisors. The orthodontic appliance, seen in the radiograph, is being used to draw the centrals together. It was highly important in this case that the teeth be THE USES OF THE RADIOGRAPH IN DENTISTRY 165 moved through the alveolar process en masse, and not tip
. Elementary and dental radiography / by Howard Riley Raper . Fig. 146. Radiograph made to show relation of temporary molar roots to advancing bicuspids.(Collection of Dr. Cryer. Radiograph by Pancoast, of Philadelphia.) 7. Co Observe moping Ceetb. Fig. 147 demonstrates the congenital absence of Tig*. 147, 14$ and 149. the upper lateral incisors. The orthodontic appliance, seen in the radiograph, is being used to draw the centrals together. It was highly important in this case that the teeth be THE USES OF THE RADIOGRAPH IN DENTISTRY 165 moved through the alveolar process en masse, and not tipped. Themovement desired was one which would make the roots parallel whenthe crowns of the teeth came together, so that posts could be set in thecanals of the central incisors, and a bridge made to restore the lost lat-erals. Fig. 148 was taken about a month after Fig. 147. It shows thatthe teeth have been moved together, but there is too much tipping of the. Fig. 14?. Fig 14-. 149. Fig. 147. Congenital absence of upper lateral incisors. The orthodontic appliance seen is being used to draw the central incisors 148. This radiograph was made one month after Fig. 147. It will be seen that there has been considerable movement of the teeth. The left central is tipped 149. Made one month after Fig. 148. The central incisors are together and their roots almost parallel. left incisor—not enough movement of the tooth at the apex of the root,compared to the movement of the crown. It, therefore, became necessaryto modify the force which was being used. This was done, and Fig. 149shows the teeth together and the roots almost parallel. A case in the practice of Dr. C. Edmund Kells,Tigs. ISO, 1SI and 152. Jr., and reported by him in the May number ofItems of Interest. 1911. Fig. 150 shows a mal-posed permanent cuspid above the temporary cuspid, the root of whichis somewhat resorbed. Age of patient, eleven years.
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