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International Poster Journal of Dentistry and Oral Medicine



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Int Poster J Dent Oral Med 14 (2012), No. 3     15. Sep. 2012

Int Poster J Dent Oral Med 2012, Vol 14 No 3, Poster 618

Magnetic attachments on molar auxiliary abutments in removable partial overdentures

Language: English

Dr. Oana-Cella Andrei, Dr. Alexandru-Titus Farcasiu,
University of Medicine and Pharmacy "Carol Davila", Faculty of Dental Medicine, Removable Prosthetic Department, Bucharest, Romania

November 18-19, 2011
618th Congress of AIOP
Bologna, Italy


The advantages of keeping natural roots have been mentioned often in complete overdenture technologies. Considering their benefits in RPD treatment we attempted to analyze the contribution of molars, presenting moderate periodontal problems, as auxiliary abutments for retention and stabilization in the long-term success of the prosthetic restoration.


The aim of our study was to evaluate the functional benefit of using magnets as secondary attachments on remained molars used as auxiliary abutments for the removable partial denture and also to assess the patient's satisfaction regarding these prosthetic solution.

Fig. 1a Fig. 1b
Fig. 1c Fig. 1d

Material and Methods

In this study we analyzed only removable partial dentures with extra-coronal ball attachments on the main abutments and magnets on the auxiliary ones. We selected edentulous patients in imminence of becoming class I or II Kennedy, but we choose to keep some of the periodontally affected last molars under the terminal saddles. The surveying period was of 4 years and it included 12 patients, 6 males and 6 females. The variables studied were: class of edentulism, number of magnets we used in each case and the opposing arch situation. The study was centered on the patient's satisfaction regarding chewing ability, retention and stability of the dentures.

Fig. 2a Fig. 2b
Fig. 2c Fig. 2d
Fig. 3a Fig. 3b
Fig. 3c Fig. 3d


Patient's satisfaction concerning chewing ability, retention and stabilization of the denture was highly superior in presence of the molars with magnets under the free-end saddles then in their absence. The use of magnets presented various difficulties in different clinical situations.

Fig. 4a Fig. 4b
Fig. 4c Fig. 4d
Fig. 5a: 4 year repairs Fig. 5b: 4 year repairs
Fig. 5c: 4 year repairs Fig. 5d: 4 year repairs


Magnets are relatively easy to use and to fit in various clinical situations. They are well accepted by the patients because they are significantly increasing their chewing ability and the retention and stabilization of their removable partial denture. Teeth that suffer from moderate periodontal disease with concomitant bone loss can be used as abutments if the initial design of the denture is made in such manner that the loss of these auxiliary abutments does not imply the loss of the denture.

This Poster was submitted by Dr. Oana-Cella Andrei.

Correspondence address:
Oana-Cella Andrei
University of Medicine and Pharmacy "Carol Davila" Bucharest
Faculty of Dental Medicine, Removable Prosthetic Department
Banu Udrea 2, bloc G7, sc.2, et. 8, ap. 63
031273 Bucharest