. Elementary and dental radiography . Fig. 131. Fig. 132. Fig. 131. Congenital absence of the upper second bicuspid. Observe the orthodontia appliance in position. (Radiograph by Lewis of Chicago.)Fig. 132. Delayed eruption of an upper second bicuspid. The orthodontia appliance in positionis being used to make space in the arch for the delayed tooth, (Radiograph by Lewis of Chicago.). Fig. 133. A badly impacted lower second bicuspid, with no space at all for it in the dental arch. (Radiograph by Pancoast cf Philadelphia.) Tim USIiS OP Jllli RADIOGKAril JX DliXTISTRY 151 which should have been


. Elementary and dental radiography . Fig. 131. Fig. 132. Fig. 131. Congenital absence of the upper second bicuspid. Observe the orthodontia appliance in position. (Radiograph by Lewis of Chicago.)Fig. 132. Delayed eruption of an upper second bicuspid. The orthodontia appliance in positionis being used to make space in the arch for the delayed tooth, (Radiograph by Lewis of Chicago.). Fig. 133. A badly impacted lower second bicuspid, with no space at all for it in the dental arch. (Radiograph by Pancoast cf Philadelphia.) Tim USIiS OP Jllli RADIOGKAril JX DliXTISTRY 151 which should have been occupied by the permanent cuspid. A radio-graph was made (Fig. 130) to locate the missing lateral. It was notpresent in the jaw. Though I am not absolutely sure of this, I never-theless feel quite certain that the permanent lateral was mistaken for a


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