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• W1982839145 abstract "The following results have been obtained in the department of Professor Schmuziger in the Zürich Dental School: Thirty-five implants were inserted in thirty-three patients; of these, there were twenty-three total and two partial mandibular cases and eight total and two partial maxillary cases. A follow-up examination after one to one and one-half years showed that one-third of the cases developed complications such as those mentioned previously. A checkup after one to three years on thirty-three cases showed complications in two-thirds of the patients. Four patients had acute swelling around one or more abutments due to catarrhal infection, five patients presented chronically inflamed infiltrations and subacute infections in the neighborhood of the abutments, four developed acute abscesses, fistulas formed in four, eleven had discharging pockets along the abutments, six had partial exposure of the substructure, two had fractures of the abutments, and three developed hypesthesia or paresthesia of the mental nerve. In three cases former swelling did not recur; in two cases former fistulas have disappeared, but discharge along the abutments has developed instead. In one case the implant had to be removed because of massive foreign body reaction due to application of nonresorbable Aureomycin powder. In all, nineteen cases show imflammatory reactions at the present time, while thirteen are without notable inflammatory symptoms, clinically and subjectively. Two of these have paresthesia, one has hypesthesia of the mental nerve, and one patient complains of pains on changes in the weather. Thus, of thirty-two implants inserted more than one year ago, only nine have remained clinically and subjectively intact. Our results are about the same as those obtained at other European clinics,8,9 but it seems that the determination of success or failure depends on the way of looking at it. Only thus can it be explained that, for instance, Maurel,7 Trainin,12,13 Marziani,6 and others speak of almost 100 per cent success. Before every operation one should remember, as Kallenberger and Mäglin5 pointed out, that a denture implantation is a nonbiologic procedure. The good results in animal experiments are not unconditionally transferable, since most of the animals have been wearing their implants for only a few months or a few years; no dentures were ever placed on such implants, and therefore they did not have to bear the stresses of mastication. Most of the complications described here occurred only after prosthetic rehabilitation and could be partly eliminated by simply leaving out the dentures. Therefore, it seems easier to insert an implant successfully than to construct the prosthetic replacement in a way that does not turn the case into a failure. It is easy to promise that the patient can chew for several more years with the help of an implant, but in our opinion it is impossible to promise that, even after twelve months or so, there will be no complications which theoretically would make the implant rejectable from the medical point of view. Thus, according to our experiences, implants are indicated only when they are expected to serve for a limited period of time. Even in the face of the fact that almost two-thirds of our cases are showing complications which must be expected, on the basis of biologic knowledge, we must try to clarify the question of why these complications did not appear in the remaining third. Thereby, and after elimination of the difficulties with which every beginner is faced when using a new method, the rate of success is certain to improve with experience. This is why, in my opinion, the experiments with implants should be continued as a research project in suitable cases in certain teaching centers." @default.
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• W1982839145 date "1959-07-01" @default.
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• W1982839145 title "Experiences with subperiosteal implants" @default.
• W1982839145 doi "https://doi.org/10.1016/0030-4220(59)90027-1" @default.
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