A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . es of the gum surface to indicate the presence of thepermanent cuspids. It is important to note in this and other cases to be shown, the shadow distor-tion of the position of the impacted teeth which the ordinary radiogram is liableto produce. Here they have the appearance of lying imbedded in the process at aninclination of 45° as compared to the normal, and with the apical ends of the rootsqioite distally located. 370 PART VII. UNCLASSIFIED MALOCCLUSIONS In cast B, which shows
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . es of the gum surface to indicate the presence of thepermanent cuspids. It is important to note in this and other cases to be shown, the shadow distor-tion of the position of the impacted teeth which the ordinary radiogram is liableto produce. Here they have the appearance of lying imbedded in the process at aninclination of 45° as compared to the normal, and with the apical ends of the rootsqioite distally located. 370 PART VII. UNCLASSIFIED MALOCCLUSIONS In cast B, which shows the cuspids as they naturally erupted after theremoval of obstructions, and cast C, after their malpositions are corrected, theyare seen to be in perfect inclination in relation to the normal, a position which theycould not have attained had their roots been located as indicated by the is far better showTi by the cast of this case. Fig. 277 is from casts of a young man about twenty-five years of age. Slightprominences of the gum storface indicated the presence of the impacted cuspids. Fig. The radiograms also give to them the appearance of quite a mesial malinclination,which their erupted positions, shown by cast C, by no means confirm. It wouldhave been impossible to have turned these teeth to the nearly or quite normalinclinations, shown by the cast, had they been imbedded in the process in the posi-tion which the shadow distortion of the X-ray shows them. In this case, the pro-jecting force of eruption has carried the points of the crowns well forward towardthe lingual aspect of the central incisors, demanding quite a decided distal move-ment in lifting and forcing them into alignment. One of the hooks for the attach-ment of the elastic force is shown on the right cuspid of cast B, just as the tooth isemerging from the gum. Cast C shows the cuspid sufficiently erupted to place CHAPTER LI. IMPACTIONS 371 bands^for the attachment of the hngual reciprocat
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