Journal of Prosthodontic Research
Online ISSN : 1883-9207
Print ISSN : 1883-1958
ISSN-L : 1883-1958
Original Articles
Does the retention system influence the stability of implant-supported maxillary overdentures? A comparison with fixed and conventional dentures
M.M.M. MichelonA.T. PoschH.R. Sampaio-FilhoE.J.V. LourencoD.M. Telles
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JOURNAL OPEN ACCESS

2019 Volume 63 Issue 1 Pages 47-51

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Abstract

Purpose: The purpose of this in vitro study was to compare the stability of removable implant-supported maxillary overdentures with fixed complete dentures and conventional dentures.

Methods: Four types of complete dentures were tested: conventional complete dentures; overdentures retained by a male resilient attachment system; overdentures retained by a combination of clip bar and attachment system; and fixed complete dentures. Each group was placed in the posterior and anterior region and the stability was recorded by measuring the vertical displacement of the prosthesis.

Results: There was a difference in the vertical movement of the prosthesis according to the type of system. The results showed that the behavior of the overdenture retained by a combination of a clip bar and attachment system is comparable with the stabilization of an implant-retained fixed complete denture.

Conclusions: Overdentures retained by a combination of a clip bar and attachment presented better stability and retention capacity under our experimental conditions, close to that of the positive control (fixed complete denture), with the advantages of removable overdentures.

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© 2019 Japan Prosthodontic Society

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