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[Extension implantations as an aid in defect-restoring prosthodontics].

Because of a lack of denture retention, great difficulties are often encountered in edentulous patients who require prosthetic treatment of defects in the maxillo-facial region. The use of enossal implants may enable temporary rehabilitation with regard to mastication and speech. The possible range of indication is considerably limited in cases of extensive defects of the alveolar process, advanced atrophy and by radiological therapy of malignant tumors. The duration of therapeutic success is contingent upon most accurate implantation techniques and prosthetic treatment as well as the patient's oral hygiene.