PubMed · 6378547
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J Lejoyeux. 1984-03-08. [Complete dentures and implants].. https://pubmed.ncbi.nlm.nih.gov/6378547/
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We have performed 3D CT examinations before and after 21 uni- and bilateral sinus elevations, immediately prior to loading of the implants and 1 year after the loading. Comparison of the results with those of panoramic and the customary CT examinations yielded the following useful information. Any possible difference between planning and performance may be controlled. The fate of biomaterial implanted in the maxillary sinus was followed. The 3D CT projections providing most information were established (from a superior position downwards; from lateral and posterior positions forwards). Possible errors can be discovered before the implant is loaded. The cases in which it is worthwhile to perform this costly examination were determined: surgical complications, documentation, extensive alveolar atrophy etc. The results of sinus elevation with different bone substitute materials can readily be compared (e.g. autogenous bone + HTR Bioplant on one side, and autogenous bone + Algipore on the other side).
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The high cost of precision-fitting, machine-milled implant components is a major concern, and the dentist with a busy implant practice must stock numerous components at considerable expense. In this article, the use of a disposable implant mount is described as an adjunct for a positional index during stage-I surgery, immediate provisional restoration at stage-II surgery, verification jig, and implant-supported record base. By reusing the precision-fitting implant mount that is supplied free of charge by the manufacturer, the dentist can reduce the overhead costs required to provide implant prosthodontic treatment.