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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 edition. Excerpt: ...is better understood, is a question for time to settle. It seems certain, however, that we must first look for success in the operation of replantation before we can expect much from transplantation. Implantation is of much more recent origin than Tmplantation. either replantation or transplantation, and credit for the introduction of the operation is given to Dr. W. J. Younger, of San Francisco, who first performed the operation in 1885. The subject at once aroused very great interest among the dental profession, and the operation was attempted by many under varying circumstances and conditions and with varying degrees of success. Dr. Younger seems to have achieved some satisfactory results, though the failures were many; two important causes of which seem to have been resorption of the root and exfoliation. The fact, however. that some of the operations seem to have been attended with success--Dr. Younger claims to have had successfully implanted teeth under observation for eleven years--may inspire further experiments along these lines in the future. If some cases are successful, why may we not reasonably expect all cases under favorable conditions to succeed? Besides natural roots, artificial roots made of Tmplantation ivory, porcelain, metal, etc., have been experimented Of Httfflcal with, without, however, meeting with much encourR0ts. agement. Of recent years, Dr. Greenfield, of Wich ita, Kansas, has made rather extensive experiments with an artificial root made of irridio-platinum, in the form of a wire cage having a gold plate attached for retaining a porcelain crown. This cage is imbedded in the process by making therein a circular incision by means of a trephine of the exact size of the cage, leaving the core of bone in...