A Retrospective Evaluation of Treatments with Implant-Supported Maxillary Overdentures.

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A Retrospective Evaluation of Treatments with Implant-Supported Maxillary Overdentures.

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Publication Article, peer reviewed scientific
Title A Retrospective Evaluation of Treatments with Implant-Supported Maxillary Overdentures.
Author(s) Widbom, Christin ; Söderfeldt, Björn ; Kronström, Mats
Date 2005
English abstract
Background: Considerably lower success rates have been presented for implant-supported overdentures in the maxilla compared with the mandible. Purpose: The aim of the study was to report the outcome of implant-supported maxillary overdentures from one clinic. Methods: All patients treated with implant-supported maxillary overdentures in the Department of Prosthetic Dentistry, Central Hospital, Skövde, Sweden, between 1993 and 2002 were identified from patient charts and included in the study. All patients had a rigid cast gold alloy bar designed with ball attachments retaining an overdenture. Results: Twenty-seven subjects were included, of whom 13 were originally planned for overdenture treatment (group 1) and the other 14 for a fixed prosthesis (group 2). The mean observation period was 5.7 years for subjects in group 1 and 5.5 years for those in group 2. One hun-dred forty-five implants were placed, and the majority of the failures were diagnosed as early ones and were found in group 2. The cumula-tive implant survival rate after 5 years was 77% in group 1 and 46% in group 2. The probability of having implant failure was almost three times higher among subjects in group 2 compared with subjects in group 1. Most technical and biologic complications were related to the retention system. Conclusion: Maxillary implant-supported overden-tures show a high implant failure rate, but fewer implant failures oc-curred for patients originally planned for overdenture treatment.
Host/Issue Clinical Implant Dentistry and Related Research;3
Volume 7
ISSN 1523-0899
Pages 166-172
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY
Handle http://hdl.handle.net/2043/7874 (link to this page)

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