ABSTRACT
Different materials and methods can be used for edentulous maxillae rehabilitations. A precise fit between the implant and the framework is assumed. Hence, often implant suprastructures made by conventional lost wax techniques lack such a fit and a secondary modification is necessary. Alternatively the CNC-milling technique provides implant frameworks with a passive fit made of titanium and recently also of zirconia. This article describes the fabrication of a fixed complete dental prosthesis supported by seven implants in an edentulous maxilla. Two prostheses were fabricated, one made of a titanium framework veneered with resin and one made experimentally of a zirconia framework veneered with ceramics. The clinical and technical steps are documented and discussed.
Subject(s)
Alveolar Bone Loss/rehabilitation , Dental Implantation, Endosseous/methods , Dental Prosthesis Design , Dental Prosthesis Retention/instrumentation , Dental Prosthesis, Implant-Supported , Denture, Complete, Upper , Jaw, Edentulous/rehabilitation , Computer-Aided Design , Dental Alloys , Dental Porcelain , Denture, Complete, Immediate , Humans , Jaw, Edentulous/surgery , Male , Middle Aged , Models, Dental , Surgery, Computer-Assisted , Titanium , ZirconiumABSTRACT
Edentulous patients wearing a conventional complete denture often request a fixed restoration for functional, esthetical and/or psychosocial reasons. For these patients implant-supported fixed dental prostheses are a prosthetic means of choice. However, after years of edentulism often a marked resorption of the alveolar crest has taken place, asking for bone augmentation before implant placement. Thus, fixed implant reconstructions are time and cost intense and stressful for the patient. This case report documents the immediate fixed reconstruction in the edentulous maxilla after ridge augmentation with a cortical cancellous bone graft from the iliac crest and implant placement. A CAD/CAM-system was used for implant planning and the fabrication of a drilling guide. The prosthetic reconstruction was inserted immediately after implant placement.
