Chair: Tetsuo Ohyama (Nihon University)

poster discussion


The Relining Method of Removable Denture with Magnetic Attachments

A. Hiraoka1, T. Masuda1, T. Tanaka2, K. Hayashi1, K. Shiraishi1, R. Kanbara1, Y. Nakamura1, F. Ito2, M. Okada2 and Y. Tanaka1


1Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University

2Dental Laboratory of University Hospital, Aichi-Gakuin University




In a magnetic attachment denture, relining material is interposed between a keeper and magnetic assembly. It creates air gap, which results in a decrease in attachment force of a denture.

The purpose of the present study was to investigate the proper relining method of a magnetic attachment denture.

Three relining methods were performed: Direct relining methods were performed by removing and not removing a magnetic assembly. In the indirect method, a functional impression was taken using the denture base as a tray. The denture was relieved and relined in the dental laboratory.

Selection criteria of direct and indirect relining method were different between resin-bonded and cement-bonded magnetic assemblies in the denture base. The level of difficulty in relining was different depending on the fitting condition and a size of a denture base, and the shape of keeper coping and metal denture base.

Further investigation is needed on the selection criteria for relining method of a magnetic attachment denture.